toolkit/client: fix FindProof to handle self-delegation properly

invocation: add support for self-signed invocations (issuer=subject)
Merge pull request #118 from alanshaw/ash/fix/sort-tokens
2025-12-08 20:25:28 +01:00 · 2025-12-08 18:11:58 +01:00 · 2025-12-03 17:04:04 +01:00 · 2025-12-03 13:32:54 +01:00 · 2025-12-03 12:19:27 +00:00 · 2025-11-02 22:02:28 +00:00
142 changed files with 3990 additions and 3291 deletions
--- a/Readme.md
+++ b/Readme.md
@@ -17,7 +17,7 @@
        <img alt="Go benchmarks" src="https://img.shields.io/badge/Benchmarks-go-blue">
    </a>
    <a href="https://github.com/ucan-wg/go-ucan/blob/v1/LICENSE.md">
-        <img alt="Apache 2.0 + MIT License" src="https://img.shields.io/badge/License-Apache--2.0+MIT-green">
+        <img alt="Apache 2.0 OR MIT License" src="https://img.shields.io/badge/License-Apache--2.0_OR_MIT-green">
    </a>
    <a href="https://pkg.go.dev/github.com/ucan-wg/go-ucan">
      <img src="https://img.shields.io/badge/Docs-godoc-blue" alt="Docs">
@@ -41,6 +41,7 @@ The UCAN specification is separated in multiple sub-spec:
 - [Main specification](https://github.com/ucan-wg/spec)
 - [Delegation](https://github.com/ucan-wg/delegation/tree/v1_ipld)
 - [Invocation](https://github.com/ucan-wg/invocation)
+- [Container](https://github.com/ucan-wg/container)

 Not implemented yet:
 - [Revocation](https://github.com/ucan-wg/revocation/tree/first-draft)
@@ -53,11 +54,9 @@ Not implemented yet:

 ## Status

-`go-ucan` currently support the required parts of the UCAN specification: the main specification, delegation and invocation.
+`go-ucan` currently support the required parts of the UCAN specification: the main specification, delegation and invocation. It leverages the sibling project [`go-did-it`](https://github.com/MetaMask/go-did-it) for easy and extensible DID support.

 Besides that, `go-ucan` also includes:
- a simplified [DID](https://www.w3.org/TR/did-core/) and [did-key](https://w3c-ccg.github.io/did-method-key/) implementation
- a [token container](https://github.com/ucan-wg/go-ucan/tree/v1/pkg/container) with CBOR and CAR format, to package and carry tokens together, see [SPEC](pkg/container/SPEC.md)
 - support for encrypted values in token's metadata

 ## Getting Help
@@ -74,4 +73,4 @@ Artwork by [Bruno Monts](https://www.instagram.com/bruno_monts). Thank you [Rene

 ## License

-This project is licensed under the double license [Apache 2.0 + MIT](https://github.com/ucan-wg/go-ucan/blob/v1/LICENSE.md).
+This project is licensed under the dual license [Apache 2.0 OR MIT](https://github.com/ucan-wg/go-ucan/blob/v1/LICENSE.md).
--- a/did/README.md
+++ b/did/README.md
@@ -1,31 +0,0 @@
-## did
-
-### Testing
-
-The test suite for this package includes test vectors provided by the
-authors of the [`did:key` method specification](https://w3c-ccg.github.io/did-method-key/).
-Some of these tests provide the public key associated with a `did:key`
-as JWKs and an extra (test-only) dependency has been added to unmarshal
-the JWK into a Go `struct`.  Support for the `secp256k1` encryption
-algorithm is experimental (but stable in my experience) and requires the
-addition of the following build tag to properly run:
-
-```
-// go:build jwx_es256k
-```
-
-WARNING: These tests will not run by default!
-
-To include these tests from the CLI, execute the following command:
-
-```
-go test -v ./did -tags jwx_es256k
-```
-
-It should also be possible to configure your IDE to run these tests.  For
-instance, in Codium, add the following JSON snippet to your local project
-configuration:
-
-```
-"go.testTags": "jwx_es256k",
-```
--- a/did/crypto.go
+++ b/did/crypto.go
@@ -1,231 +0,0 @@
-package did
-
-import (
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/x509"
-	"errors"
-	"fmt"
-
-	"github.com/decred/dcrd/dcrec/secp256k1/v4"
-	crypto "github.com/libp2p/go-libp2p/core/crypto"
-	"github.com/libp2p/go-libp2p/core/crypto/pb"
-	"github.com/multiformats/go-multicodec"
-	"github.com/multiformats/go-varint"
-)
-
-// GenerateEd25519 generates an Ed25519 private key and the matching DID.
-// This is the RECOMMENDED algorithm.
-func GenerateEd25519() (crypto.PrivKey, DID, error) {
-	priv, pub, err := crypto.GenerateEd25519Key(rand.Reader)
-	if err != nil {
-		return nil, Undef, nil
-	}
-	did, err := FromPubKey(pub)
-	return priv, did, err
-}
-
-// GenerateRSA generates a RSA private key and the matching DID.
-func GenerateRSA() (crypto.PrivKey, DID, error) {
-	// NIST Special Publication 800-57 Part 1 Revision 5
-	// Section 5.6.1.1 (Table 2)
-	// Paraphrased: 2048-bit RSA keys are secure until 2030 and 3072-bit keys are recommended for longer-term security.
-	const keyLength = 3072
-
-	priv, pub, err := crypto.GenerateRSAKeyPair(keyLength, rand.Reader)
-	if err != nil {
-		return nil, Undef, nil
-	}
-	did, err := FromPubKey(pub)
-	return priv, did, err
-}
-
-// GenerateEd25519 generates a Secp256k1 private key and the matching DID.
-func GenerateSecp256k1() (crypto.PrivKey, DID, error) {
-	priv, pub, err := crypto.GenerateSecp256k1Key(rand.Reader)
-	if err != nil {
-		return nil, Undef, nil
-	}
-	did, err := FromPubKey(pub)
-	return priv, did, err
-}
-
-// GenerateECDSA generates an ECDSA private key and the matching DID
-// for the default P256 curve.
-func GenerateECDSA() (crypto.PrivKey, DID, error) {
-	return GenerateECDSAWithCurve(P256)
-}
-
-// GenerateECDSAWithCurve generates an ECDSA private key and matching
-// DID for the user-supplied curve
-func GenerateECDSAWithCurve(code multicodec.Code) (crypto.PrivKey, DID, error) {
-	var curve elliptic.Curve
-
-	switch code {
-	case P256:
-		curve = elliptic.P256()
-	case P384:
-		curve = elliptic.P384()
-	case P521:
-		curve = elliptic.P521()
-	default:
-		return nil, Undef, errors.New("unsupported ECDSA curve")
-	}
-
-	priv, pub, err := crypto.GenerateECDSAKeyPairWithCurve(curve, rand.Reader)
-	if err != nil {
-		return nil, Undef, err
-	}
-
-	did, err := FromPubKey(pub)
-
-	return priv, did, err
-}
-
-// FromPrivKey is a convenience function that returns the DID associated
-// with the public key associated with the provided private key.
-func FromPrivKey(privKey crypto.PrivKey) (DID, error) {
-	return FromPubKey(privKey.GetPublic())
-}
-
-// FromPubKey returns a did:key constructed from the provided public key.
-func FromPubKey(pubKey crypto.PubKey) (DID, error) {
-	var code multicodec.Code
-
-	switch pubKey.Type() {
-	case pb.KeyType_Ed25519:
-		code = multicodec.Ed25519Pub
-	case pb.KeyType_RSA:
-		code = RSA
-	case pb.KeyType_Secp256k1:
-		code = Secp256k1
-	case pb.KeyType_ECDSA:
-		var err error
-		if code, err = codeForCurve(pubKey); err != nil {
-			return Undef, err
-		}
-	default:
-		return Undef, errors.New("unsupported key type")
-	}
-
-	if pubKey.Type() == pb.KeyType_ECDSA && code == Secp256k1 {
-		var err error
-
-		pubKey, err = coerceECDSAToSecp256k1(pubKey)
-		if err != nil {
-			return Undef, err
-		}
-	}
-
-	var bytes []byte
-
-	switch pubKey.Type() {
-	case pb.KeyType_ECDSA:
-		pkix, err := pubKey.Raw()
-		if err != nil {
-			return Undef, err
-		}
-
-		publicKey, err := x509.ParsePKIXPublicKey(pkix)
-		if err != nil {
-			return Undef, err
-		}
-
-		ecdsaPublicKey := publicKey.(*ecdsa.PublicKey)
-
-		bytes = elliptic.MarshalCompressed(ecdsaPublicKey.Curve, ecdsaPublicKey.X, ecdsaPublicKey.Y)
-	case pb.KeyType_Ed25519, pb.KeyType_Secp256k1:
-		var err error
-
-		if bytes, err = pubKey.Raw(); err != nil {
-			return Undef, err
-		}
-	case pb.KeyType_RSA:
-		var err error
-
-		pkix, err := pubKey.Raw()
-		if err != nil {
-			return Undef, err
-		}
-
-		publicKey, err := x509.ParsePKIXPublicKey(pkix)
-		if err != nil {
-			return Undef, err
-		}
-
-		bytes = x509.MarshalPKCS1PublicKey(publicKey.(*rsa.PublicKey))
-	}
-
-	return DID{
-		code:  code,
-		bytes: string(append(varint.ToUvarint(uint64(code)), bytes...)),
-	}, nil
-}
-
-// ToPubKey returns the crypto.PubKey encapsulated in the DID formed by
-// parsing the provided string.
-func ToPubKey(s string) (crypto.PubKey, error) {
-	id, err := Parse(s)
-	if err != nil {
-		return nil, err
-	}
-
-	return id.PubKey()
-}
-
-func codeForCurve(pubKey crypto.PubKey) (multicodec.Code, error) {
-	stdPub, err := crypto.PubKeyToStdKey(pubKey)
-	if err != nil {
-		return multicodec.Identity, err
-	}
-
-	ecdsaPub, ok := stdPub.(*ecdsa.PublicKey)
-	if !ok {
-		return multicodec.Identity, errors.New("failed to assert type for code to curve")
-	}
-
-	switch ecdsaPub.Curve {
-	case elliptic.P256():
-		return P256, nil
-	case elliptic.P384():
-		return P384, nil
-	case elliptic.P521():
-		return P521, nil
-	case secp256k1.S256():
-		return Secp256k1, nil
-	default:
-		return multicodec.Identity, fmt.Errorf("unsupported ECDSA curve: %s", ecdsaPub.Curve.Params().Name)
-	}
-}
-
-// secp256k1.S256 is a valid ECDSA curve, but the go-libp2p/core/crypto
-// package treats it as a different type and has a different format for
-// the raw bytes of the public key.
-//
-// If a valid ECDSA public key was created using the secp256k1.S256 curve,
-// this function will "convert" it from a crypto.ECDSAPubKey to a
-// crypto.Secp256k1PublicKey.
-func coerceECDSAToSecp256k1(pubKey crypto.PubKey) (crypto.PubKey, error) {
-	stdPub, err := crypto.PubKeyToStdKey(pubKey)
-	if err != nil {
-		return nil, err
-	}
-
-	ecdsaPub, ok := stdPub.(*ecdsa.PublicKey)
-	if !ok {
-		return nil, errors.New("failed to assert type for secp256k1 coersion")
-	}
-
-	ecdsaPubBytes := append([]byte{0x04}, append(ecdsaPub.X.Bytes(), ecdsaPub.Y.Bytes()...)...)
-
-	secp256k1Pub, err := secp256k1.ParsePubKey(ecdsaPubBytes)
-	if err != nil {
-		return nil, err
-	}
-
-	cryptoPub := crypto.Secp256k1PublicKey(*secp256k1Pub)
-
-	return &cryptoPub, nil
-}
--- a/did/crypto_test.go
+++ b/did/crypto_test.go
@@ -1,108 +0,0 @@
-package did_test
-
-import (
-	"crypto/elliptic"
-	"crypto/rand"
-	"testing"
-
-	"github.com/decred/dcrd/dcrec/secp256k1/v4"
-	"github.com/libp2p/go-libp2p/core/crypto"
-	"github.com/libp2p/go-libp2p/core/crypto/pb"
-	"github.com/multiformats/go-multicodec"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-
-	"github.com/ucan-wg/go-ucan/did"
-)
-
-const (
-	exampleDIDStr    = "did:key:z6MkhaXgBZDvotDkL5257faiztiGiC2QtKLGpbnnEGta2doK"
-	examplePubKeyStr = "Lm/M42cB3HkUiODQsXRcweM6TByfzEHGO9ND274JcOY="
-)
-
-func TestFromPubKey(t *testing.T) {
-	t.Parallel()
-
-	_, ecdsaP256, err := crypto.GenerateECDSAKeyPairWithCurve(elliptic.P256(), rand.Reader)
-	require.NoError(t, err)
-	_, ecdsaP384, err := crypto.GenerateECDSAKeyPairWithCurve(elliptic.P384(), rand.Reader)
-	require.NoError(t, err)
-	_, ecdsaP521, err := crypto.GenerateECDSAKeyPairWithCurve(elliptic.P521(), rand.Reader)
-	require.NoError(t, err)
-	_, ecdsaSecp256k1, err := crypto.GenerateECDSAKeyPairWithCurve(secp256k1.S256(), rand.Reader)
-	require.NoError(t, err)
-	_, ed25519, err := crypto.GenerateEd25519Key(rand.Reader)
-	require.NoError(t, err)
-	_, rsa, err := crypto.GenerateRSAKeyPair(2048, rand.Reader)
-	require.NoError(t, err)
-	_, secp256k1PubKey1, err := crypto.GenerateSecp256k1Key(rand.Reader)
-	require.NoError(t, err)
-
-	test := func(pub crypto.PubKey, code multicodec.Code) func(t *testing.T) {
-		t.Helper()
-
-		return func(t *testing.T) {
-			t.Parallel()
-
-			id, err := did.FromPubKey(pub)
-			require.NoError(t, err)
-			p, err := id.PubKey()
-			require.NoError(t, err)
-			assert.Equal(t, pub, p)
-		}
-	}
-
-	t.Run("ECDSA with P256 curve", test(ecdsaP256, did.P256))
-	t.Run("ECDSA with P384 curve", test(ecdsaP384, did.P384))
-	t.Run("ECDSA with P521 curve", test(ecdsaP521, did.P521))
-	t.Run("Ed25519", test(ed25519, did.Ed25519))
-	t.Run("RSA", test(rsa, did.RSA))
-	t.Run("secp256k1", test(secp256k1PubKey1, did.Secp256k1))
-
-	t.Run("ECDSA with secp256k1 curve (coerced)", func(t *testing.T) {
-		t.Parallel()
-
-		id, err := did.FromPubKey(ecdsaSecp256k1)
-		require.NoError(t, err)
-		p, err := id.PubKey()
-		require.NoError(t, err)
-		require.Equal(t, pb.KeyType_Secp256k1, p.Type())
-	})
-
-	t.Run("unmarshaled example key (secp256k1)", func(t *testing.T) {
-		t.Parallel()
-
-		id, err := did.FromPubKey(examplePubKey(t))
-		require.NoError(t, err)
-		require.Equal(t, exampleDID(t), id)
-	})
-}
-
-func TestToPubKey(t *testing.T) {
-	t.Parallel()
-
-	pubKey, err := did.ToPubKey(exampleDIDStr)
-	require.NoError(t, err)
-	require.Equal(t, examplePubKey(t), pubKey)
-}
-
-func exampleDID(t *testing.T) did.DID {
-	t.Helper()
-
-	id, err := did.Parse(exampleDIDStr)
-	require.NoError(t, err)
-
-	return id
-}
-
-func examplePubKey(t *testing.T) crypto.PubKey {
-	t.Helper()
-
-	pubKeyCfg, err := crypto.ConfigDecodeKey(examplePubKeyStr)
-	require.NoError(t, err)
-
-	pubKey, err := crypto.UnmarshalEd25519PublicKey(pubKeyCfg)
-	require.NoError(t, err)
-
-	return pubKey
-}
--- a/did/did.go
+++ b/did/did.go
@@ -1,143 +0,0 @@
-package did
-
-import (
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/x509"
-	"fmt"
-	"strings"
-
-	crypto "github.com/libp2p/go-libp2p/core/crypto"
-	mbase "github.com/multiformats/go-multibase"
-	"github.com/multiformats/go-multicodec"
-	varint "github.com/multiformats/go-varint"
-)
-
-// Signature algorithms from the [did:key specification]
-//
-// [did:key specification]: https://w3c-ccg.github.io/did-method-key/#signature-method-creation-algorithm
-const (
-	X25519    = multicodec.X25519Pub
-	Ed25519   = multicodec.Ed25519Pub // UCAN required/recommended
-	P256      = multicodec.P256Pub    // UCAN required
-	P384      = multicodec.P384Pub
-	P521      = multicodec.P521Pub
-	Secp256k1 = multicodec.Secp256k1Pub // UCAN required
-	RSA       = multicodec.RsaPub
-)
-
-// Undef can be used to represent a nil or undefined DID, using DID{}
-// directly is also acceptable.
-var Undef = DID{}
-
-// DID is a Decentralized Identifier of the did:key type, directly holding a cryptographic public key.
-// [did:key format]: https://w3c-ccg.github.io/did-method-key/
-type DID struct {
-	code  multicodec.Code
-	bytes string // as string instead of []byte to allow the == operator
-}
-
-// Parse returns the DID from the string representation or an error if
-// the prefix and method are incorrect, if an unknown encryption algorithm
-// is specified or if the method-specific-identifier's bytes don't
-// represent a public key for the specified encryption algorithm.
-func Parse(str string) (DID, error) {
-	const keyPrefix = "did:key:"
-
-	if !strings.HasPrefix(str, keyPrefix) {
-		return Undef, fmt.Errorf("must start with 'did:key'")
-	}
-
-	baseCodec, bytes, err := mbase.Decode(str[len(keyPrefix):])
-	if err != nil {
-		return Undef, err
-	}
-	if baseCodec != mbase.Base58BTC {
-		return Undef, fmt.Errorf("not Base58BTC encoded")
-	}
-	code, _, err := varint.FromUvarint(bytes)
-	if err != nil {
-		return Undef, err
-	}
-	switch multicodec.Code(code) {
-	case Ed25519, P256, Secp256k1, RSA:
-		return DID{bytes: string(bytes), code: multicodec.Code(code)}, nil
-	default:
-		return Undef, fmt.Errorf("unsupported did:key multicodec: 0x%x", code)
-	}
-}
-
-// MustParse is like Parse but panics instead of returning an error.
-func MustParse(str string) DID {
-	did, err := Parse(str)
-	if err != nil {
-		panic(err)
-	}
-	return did
-}
-
-// Defined tells if the DID is defined, not equal to Undef.
-func (d DID) Defined() bool {
-	return d.code != 0 || len(d.bytes) > 0
-}
-
-// PubKey returns the public key encapsulated by the did:key.
-func (d DID) PubKey() (crypto.PubKey, error) {
-	unmarshaler, ok := map[multicodec.Code]crypto.PubKeyUnmarshaller{
-		X25519:    crypto.UnmarshalEd25519PublicKey,
-		Ed25519:   crypto.UnmarshalEd25519PublicKey,
-		P256:      ecdsaPubKeyUnmarshaler(elliptic.P256()),
-		P384:      ecdsaPubKeyUnmarshaler(elliptic.P384()),
-		P521:      ecdsaPubKeyUnmarshaler(elliptic.P521()),
-		Secp256k1: crypto.UnmarshalSecp256k1PublicKey,
-		RSA:       rsaPubKeyUnmarshaller,
-	}[d.code]
-	if !ok {
-		return nil, fmt.Errorf("unsupported multicodec: %d", d.code)
-	}
-
-	codeSize := varint.UvarintSize(uint64(d.code))
-	return unmarshaler([]byte(d.bytes)[codeSize:])
-}
-
-// String formats the decentralized identity document (DID) as a string.
-func (d DID) String() string {
-	if d == Undef {
-		return "(undefined)"
-	}
-	key, _ := mbase.Encode(mbase.Base58BTC, []byte(d.bytes))
-	return "did:key:" + key
-}
-
-func ecdsaPubKeyUnmarshaler(curve elliptic.Curve) crypto.PubKeyUnmarshaller {
-	return func(data []byte) (crypto.PubKey, error) {
-		x, y := elliptic.UnmarshalCompressed(curve, data)
-
-		ecdsaPublicKey := &ecdsa.PublicKey{
-			Curve: curve,
-			X:     x,
-			Y:     y,
-		}
-
-		pkix, err := x509.MarshalPKIXPublicKey(ecdsaPublicKey)
-		if err != nil {
-			return nil, err
-		}
-
-		return crypto.UnmarshalECDSAPublicKey(pkix)
-	}
-}
-
-func rsaPubKeyUnmarshaller(data []byte) (crypto.PubKey, error) {
-	rsaPublicKey, err := x509.ParsePKCS1PublicKey(data)
-	if err != nil {
-		return nil, err
-	}
-
-	pkix, err := x509.MarshalPKIXPublicKey(rsaPublicKey)
-	if err != nil {
-		return nil, err
-	}
-
-	return crypto.UnmarshalRsaPublicKey(pkix)
-}
--- a/did/did_test.go
+++ b/did/did_test.go
@@ -1,41 +0,0 @@
-package did
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-func TestParseDIDKey(t *testing.T) {
-	str := "did:key:z6Mkod5Jr3yd5SC7UDueqK4dAAw5xYJYjksy722tA9Boxc4z"
-	d, err := Parse(str)
-	require.NoError(t, err)
-	require.Equal(t, str, d.String())
-}
-
-func TestMustParseDIDKey(t *testing.T) {
-	str := "did:key:z6Mkod5Jr3yd5SC7UDueqK4dAAw5xYJYjksy722tA9Boxc4z"
-	require.NotPanics(t, func() {
-		d := MustParse(str)
-		require.Equal(t, str, d.String())
-	})
-	str = "did:key:z7Mkod5Jr3yd5SC7UDueqK4dAAw5xYJYjksy722tA9Boxc4z"
-	require.Panics(t, func() {
-		MustParse(str)
-	})
-}
-
-func TestEquivalence(t *testing.T) {
-	undef0 := DID{}
-	undef1 := Undef
-
-	did0, err := Parse("did:key:z6Mkod5Jr3yd5SC7UDueqK4dAAw5xYJYjksy722tA9Boxc4z")
-	require.NoError(t, err)
-	did1, err := Parse("did:key:z6Mkod5Jr3yd5SC7UDueqK4dAAw5xYJYjksy722tA9Boxc4z")
-	require.NoError(t, err)
-
-	require.True(t, undef0 == undef1)
-	require.False(t, undef0 == did0)
-	require.True(t, did0 == did1)
-	require.False(t, undef1 == did1)
-}
--- a/did/didtest/crypto.go
+++ b/did/didtest/crypto.go
@@ -1,150 +0,0 @@
-// Package didtest provides Personas that can be used for testing.  Each
-// Persona has a name, crypto.PrivKey and associated crypto.PubKey and
-// did.DID.
-package didtest
-
-import (
-	"fmt"
-
-	"github.com/libp2p/go-libp2p/core/crypto"
-
-	"github.com/ucan-wg/go-ucan/did"
-)
-
-const (
-	alicePrivKeyB64 = "CAESQHdNJLBBiuc1AdwPHBkubB2KS1p0cv2JEF7m8tfwtrcm5ajaYPm+XmVCmtcHOF2lGDlmaiDA7emfwD3IrcyES0M="
-	bobPrivKeyB64   = "CAESQHBz+AIop1g+9iBDj+ufUc/zm9/ry7c6kDFO8Wl/D0+H63V9hC6s9l4npf3pYEFCjBtlR0AMNWMoFQKSlYNKo20="
-	carolPrivKeyB64 = "CAESQPrCgkcHnYFXDT9AlAydhPECBEivEuuVx9dJxLjVvDTmJIVNivfzg6H4mAiPfYS+5ryVVUZTHZBzvMuvvvG/Ks0="
-	danPrivKeyB64   = "CAESQCgNhzofKhC+7hW6x+fNd7iMPtQHeEmKRhhlduf/I7/TeOEFYAEflbJ0sAhMeDJ/HQXaAvsWgHEbJ3ZLhP8q2B0="
-	erinPrivKeyB64  = "CAESQKhCJo5UBpQcthko8DKMFsbdZ+qqQ5oc01CtLCqrE90dF2GfRlrMmot3WPHiHGCmEYi5ZMEHuiSI095e/6O4Bpw="
-	frankPrivKeyB64 = "CAESQDlXPKsy3jHh7OWTWQqyZF95Ueac5DKo7xD0NOBE5F2BNr1ZVxRmJ2dBELbOt8KP9sOACcO9qlCB7uMA1UQc7sk="
-)
-
-// Persona is a generic participant used for cryptographic testing.
-type Persona int
-
-// The provided Personas were selected from the first few generic
-// participants listed in this [table].
-//
-// [table]: https://en.wikipedia.org/wiki/Alice_and_Bob#Cryptographic_systems
-const (
-	PersonaAlice Persona = iota + 1
-	PersonaBob
-	PersonaCarol
-	PersonaDan
-	PersonaErin
-	PersonaFrank
-)
-
-var privKeys map[Persona]crypto.PrivKey
-
-func init() {
-	privKeys = make(map[Persona]crypto.PrivKey, 6)
-	for persona, privKeyCfg := range privKeyB64() {
-		privKeyMar, err := crypto.ConfigDecodeKey(privKeyCfg)
-		if err != nil {
-			return
-		}
-
-		privKey, err := crypto.UnmarshalPrivateKey(privKeyMar)
-		if err != nil {
-			return
-		}
-
-		privKeys[persona] = privKey
-	}
-}
-
-// DID returns a did.DID based on the Persona's Ed25519 public key.
-func (p Persona) DID() did.DID {
-	d, err := did.FromPrivKey(p.PrivKey())
-	if err != nil {
-		panic(err)
-	}
-	return d
-}
-
-// Name returns the username of the Persona.
-func (p Persona) Name() string {
-	name, ok := map[Persona]string{
-		PersonaAlice: "Alice",
-		PersonaBob:   "Bob",
-		PersonaCarol: "Carol",
-		PersonaDan:   "Dan",
-		PersonaErin:  "Erin",
-		PersonaFrank: "Frank",
-	}[p]
-	if !ok {
-		panic(fmt.Sprintf("Unknown persona: %v", p))
-	}
-
-	return name
-}
-
-// PrivKey returns the Ed25519 private key for the Persona.
-func (p Persona) PrivKey() crypto.PrivKey {
-	res, ok := privKeys[p]
-	if !ok {
-		panic(fmt.Sprintf("Unknown persona: %v", p))
-	}
-	return res
-}
-
-func (p Persona) PrivKeyConfig() string {
-	res, ok := privKeyB64()[p]
-	if !ok {
-		panic(fmt.Sprintf("Unknown persona: %v", p))
-	}
-	return res
-}
-
-// PubKey returns the Ed25519 public key for the Persona.
-func (p Persona) PubKey() crypto.PubKey {
-	return p.PrivKey().GetPublic()
-}
-
-// PubKeyConfig returns the marshaled and encoded Ed25519 public key
-// for the Persona.
-func (p Persona) PubKeyConfig() string {
-	pubKeyMar, err := crypto.MarshalPublicKey(p.PrivKey().GetPublic())
-	if err != nil {
-		panic(err)
-	}
-	return crypto.ConfigEncodeKey(pubKeyMar)
-}
-
-func privKeyB64() map[Persona]string {
-	return map[Persona]string{
-		PersonaAlice: alicePrivKeyB64,
-		PersonaBob:   bobPrivKeyB64,
-		PersonaCarol: carolPrivKeyB64,
-		PersonaDan:   danPrivKeyB64,
-		PersonaErin:  erinPrivKeyB64,
-		PersonaFrank: frankPrivKeyB64,
-	}
-}
-
-// Personas returns an (alphabetically) ordered list of the defined
-// Persona values.
-func Personas() []Persona {
-	return []Persona{
-		PersonaAlice,
-		PersonaBob,
-		PersonaCarol,
-		PersonaDan,
-		PersonaErin,
-		PersonaFrank,
-	}
-}
-
-// DidToName retrieve the persona's name from its DID.
-func DidToName(d did.DID) string {
-	return map[did.DID]string{
-		PersonaAlice.DID(): "Alice",
-		PersonaBob.DID():   "Bob",
-		PersonaCarol.DID(): "Carol",
-		PersonaDan.DID():   "Dan",
-		PersonaErin.DID():  "Erin",
-		PersonaFrank.DID(): "Frank",
-	}[d]
-}
--- a/did/key_spec_test.go
+++ b/did/key_spec_test.go
@@ -1,82 +0,0 @@
-//go:build jwx_es256k
-
-package did_test
-
-import (
-	"encoding/json"
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/libp2p/go-libp2p/core/crypto"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-
-	"github.com/ucan-wg/go-ucan/did"
-	"github.com/ucan-wg/go-ucan/did/testvectors"
-)
-
-// TestDidKeyVectors executes tests read from the [test vector files] provided
-// as part of the DID Key method's [specification].
-//
-// [test vector files]: https://github.com/w3c-ccg/did-method-key/tree/main/test-vectors
-// [specification]: https://w3c-ccg.github.io/did-method-key
-func TestDidKeyVectors(t *testing.T) {
-	t.Parallel()
-
-	for _, f := range []string{
-		// TODO: These test vectors are not supported by go-libp2p/core/crypto
-		// "bls12381.json",
-		"ed25519-x25519.json",
-		"nist-curves.json",
-		"rsa.json",
-		"secp256k1.json",
-		// This test vector only contains a DID Document
-		// "x25519.json",
-	} {
-		vectors := loadTestVectors(t, f)
-
-		t.Run(f, func(t *testing.T) {
-			t.Parallel()
-
-			for k, vector := range vectors {
-				t.Run(k, func(t *testing.T) {
-					// round-trip pubkey-->did-->pubkey, verified against the test vectors.
-
-					exp := vectorPubKey(t, vector)
-
-					id, err := did.FromPubKey(exp)
-					require.NoError(t, err, f, k)
-					act, err := id.PubKey()
-					require.NoError(t, err)
-
-					assert.Equal(t, k, id.String(), f, k)
-					assert.Equal(t, exp, act)
-				})
-			}
-		})
-	}
-}
-
-func loadTestVectors(t *testing.T, filename string) testvectors.Vectors {
-	t.Helper()
-
-	data, err := os.ReadFile(filepath.Join("testvectors", filename))
-	require.NoError(t, err)
-
-	var vs testvectors.Vectors
-
-	require.NoError(t, json.Unmarshal(data, &vs))
-
-	return vs
-}
-
-func vectorPubKey(t *testing.T, v testvectors.Vector) crypto.PubKey {
-	t.Helper()
-
-	pubKey, err := v.PubKey()
-	require.NoError(t, err)
-	require.NotZero(t, pubKey)
-
-	return pubKey
-}
--- a/did/testvectors/bls12381.json
+++ b/did/testvectors/bls12381.json
@@ -1,231 +0,0 @@
-{
-  "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY": {
-    "verificationKeyPair": {
-      "id": "#zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY",
-      "type": "Bls12381G2Key2020",
-      "controller": "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY",
-      "publicKeyBase58": "25EEkQtcLKsEzQ6JTo9cg4W7NHpaurn4Wg6LaNPFq6JQXnrP91SDviUz7KrJVMJd76CtAZFsRLYzvgX2JGxo2ccUHtuHk7ELCWwrkBDfrXCFVfqJKDootee9iVaF6NpdJtBE",
-      "privateKeyBase58": "8TXrPTbhefHvcz2vkGsDLBZT2UMeemveLKbdh5JZCvvn"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/bls12381-2020/v1"
-      ],
-      "id": "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY",
-      "verificationMethod": [
-        {
-          "id": "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY#zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY",
-          "type": "Bls12381G2Key2020",
-          "controller": "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY",
-          "publicKeyBase58": "25EEkQtcLKsEzQ6JTo9cg4W7NHpaurn4Wg6LaNPFq6JQXnrP91SDviUz7KrJVMJd76CtAZFsRLYzvgX2JGxo2ccUHtuHk7ELCWwrkBDfrXCFVfqJKDootee9iVaF6NpdJtBE"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY#zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY"
-      ],
-      "authentication": [
-        "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY#zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY"
-      ],
-      "capabilityInvocation": [
-        "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY#zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY"
-      ],
-      "capabilityDelegation": [
-        "did:key:zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY#zUC7K4ndUaGZgV7Cp2yJy6JtMoUHY6u7tkcSYUvPrEidqBmLCTLmi6d5WvwnUqejscAkERJ3bfjEiSYtdPkRSE8kSa11hFBr4sTgnbZ95SJj19PN2jdvJjyzpSZgxkyyxNnBNnY"
-      ]
-    }
-  },
-  "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY": {
-    "verificationKeyPair": {
-      "id": "#zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY",
-      "type": "Bls12381G2Key2020",
-      "controller": "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY",
-      "publicKeyBase58": "t5QqHdxR4C6QJWJAnk3qVd2DMr4MVFEefdP43i7fLbR5A2qJkE5bqgEtyzpNsDViGEsMKHMdpo7fKbPMhGihbfxz3Dv2Hw36XvprLHBA5DDFSphmy91oHQFdahQMei2HjoE",
-      "privateKeyBase58": "URWBZN9g2ZfKVdAz1L8pvVwEBqCbGBozt4p8Cootb35"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/bls12381-2020/v1"
-      ],
-      "id": "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY",
-      "verificationMethod": [
-        {
-          "id": "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY#zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY",
-          "type": "Bls12381G2Key2020",
-          "controller": "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY",
-          "publicKeyBase58": "t5QqHdxR4C6QJWJAnk3qVd2DMr4MVFEefdP43i7fLbR5A2qJkE5bqgEtyzpNsDViGEsMKHMdpo7fKbPMhGihbfxz3Dv2Hw36XvprLHBA5DDFSphmy91oHQFdahQMei2HjoE"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY#zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY"
-      ],
-      "authentication": [
-        "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY#zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY"
-      ],
-      "capabilityInvocation": [
-        "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY#zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY"
-      ],
-      "capabilityDelegation": [
-        "did:key:zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY#zUC77uxiMKceQoxciSy1xgk3nvP8c8NZXDnaY1xsXZaU5UmsZdnwStUke8Ca8zAdPX3MQTHEMhDTCgfdGU7UrY4RRdVhqZp8FaAaoaXFEVp2ZAM7oj3P45BuTCfc3t9FEGBAEQY"
-      ]
-    }
-  },
-  "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW": {
-    "verificationKeyPair": {
-      "id": "#zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW",
-      "type": "Bls12381G2Key2020",
-      "controller": "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW",
-      "publicKeyBase58": "25VFRgQEfbJ3Pit6Z3mnZbKPK9BdQYGwdmfdcmderjYZ12BFNQYeowjMN1AYKKKcacF3UH35ZNpBqCR8y8QLeeaGLL7UKdKLcFje3VQnosesDNHsU8jBvtvYmLJusxXsSUBC",
-      "privateKeyBase58": "48FTGTBBhezV7Ldk5g392NSxP2hwgEgWiSZQkMoNri7E"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/bls12381-2020/v1"
-      ],
-      "id": "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW",
-      "verificationMethod": [
-        {
-          "id": "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW#zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW",
-          "type": "Bls12381G2Key2020",
-          "controller": "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW",
-          "publicKeyBase58": "25VFRgQEfbJ3Pit6Z3mnZbKPK9BdQYGwdmfdcmderjYZ12BFNQYeowjMN1AYKKKcacF3UH35ZNpBqCR8y8QLeeaGLL7UKdKLcFje3VQnosesDNHsU8jBvtvYmLJusxXsSUBC"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW#zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW"
-      ],
-      "authentication": [
-        "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW#zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW"
-      ],
-      "capabilityInvocation": [
-        "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW#zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW"
-      ],
-      "capabilityDelegation": [
-        "did:key:zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW#zUC7KKoJk5ttwuuc8pmQDiUmtckEPTwcaFVZe4DSFV7fURuoRnD17D3xkBK3A9tZqdADkTTMKSwNkhjo9Hs6HfgNUXo48TNRaxU6XPLSPdRgMc15jCD5DfN34ixjoVemY62JxnW"
-      ]
-    }
-  },
-  "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU": {
-    "verificationKeyPair": {
-      "id": "#zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU",
-      "type": "Bls12381G2Key2020",
-      "controller": "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU",
-      "publicKeyBase58": "21LWABB5R6mqxvcU6LWMMt9yCAVyt8C1mHREs1EAX23fLcAEPMK4dWx59Jd6RpJ5geGt881vH9yPzZyC8WpHhS2g296mumPxJA3Aghp9jMoACE13rtTie8FYdgzgUw24eboA",
-      "privateKeyBase58": "86rp8w6Q7zgDdKqYxZsdTyhZogzwbcR7wf3VQrhV3xLG"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/bls12381-2020/v1"
-      ],
-      "id": "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU",
-      "verificationMethod": [
-        {
-          "id": "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU#zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU",
-          "type": "Bls12381G2Key2020",
-          "controller": "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU",
-          "publicKeyBase58": "21LWABB5R6mqxvcU6LWMMt9yCAVyt8C1mHREs1EAX23fLcAEPMK4dWx59Jd6RpJ5geGt881vH9yPzZyC8WpHhS2g296mumPxJA3Aghp9jMoACE13rtTie8FYdgzgUw24eboA"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU#zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU"
-      ],
-      "authentication": [
-        "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU#zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU"
-      ],
-      "capabilityInvocation": [
-        "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU#zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU"
-      ],
-      "capabilityDelegation": [
-        "did:key:zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU#zUC7FB43ErjeTPiBLZ8wWT3aBTL7QnJ6AAZh9opgV5dKkw291mC23yTnKQ2pTcSgLbdKnVJ1ARn6XrwxWqvFg5dRFzCjwSg1j35nRgs5c2nbqkJ4auPTyPtkJ3xcABRNWaDX6QU"
-      ]
-    }
-  },
-  "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA": {
-    "verificationKeyPair": {
-      "id": "#zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA",
-      "type": "Bls12381G2Key2020",
-      "controller": "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA",
-      "publicKeyBase58": "21XhJ3o4ZSgDgRoyP4Pp8agXMwLycuRa1U6fM4ZzJBxH3gJEQbiuwP3Qh2zNoofNrBKPqp3FgXxGvW84cFwMD29oA7Q9w3L8Sjcc3e9mZqFgs8iWxSsDNRcbQdoYtGaxu11r",
-      "privateKeyBase58": "5LjJ3yibKGP4zKbNgqeiQ284g8LJYnbF7ZBve7Ke9qZ5"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/bls12381-2020/v1"
-      ],
-      "id": "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA",
-      "verificationMethod": [
-        {
-          "id": "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA#zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA",
-          "type": "Bls12381G2Key2020",
-          "controller": "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA",
-          "publicKeyBase58": "21XhJ3o4ZSgDgRoyP4Pp8agXMwLycuRa1U6fM4ZzJBxH3gJEQbiuwP3Qh2zNoofNrBKPqp3FgXxGvW84cFwMD29oA7Q9w3L8Sjcc3e9mZqFgs8iWxSsDNRcbQdoYtGaxu11r"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA#zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA"
-      ],
-      "authentication": [
-        "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA#zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA"
-      ],
-      "capabilityInvocation": [
-        "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA#zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA"
-      ],
-      "capabilityDelegation": [
-        "did:key:zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA#zUC7FNFB7UinoJ5tqkeEELWLsytHBdHpwQ7wLVFAYRT6vqdr5uC3JPK6BVNNByj4KxvVKXoirT7VuqptSznjRCgvr7Ksuk42zyFw1GJSYNQSKCpjVcrZXoPUbR1P6zHmr97mVdA"
-      ]
-    }
-  },
-  "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk": {
-    "verificationKeyPair": {
-      "id": "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk#z3tEEysHYz5kkgpfDAByfDVgAuvtSFLHSqoMWmmSZBU1LZtN2sDsAS6RVQSevfxv39kyty",
-      "type": "JsonWebKey2020",
-      "controller": "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk",
-      "publicKeyJwk": {
-        "kty": "EC",
-        "crv": "BLS12381_G1",
-        "x": "im0OQGMTkh4YEhAl16hQwUQTcOaRqIqThqtSwksFK7WaH6Qywypmc3VIDyydmYTe"
-      },
-      "privateKeyJwk": {
-        "kty": "EC",
-        "crv": "BLS12381_G1",
-        "x": "im0OQGMTkh4YEhAl16hQwUQTcOaRqIqThqtSwksFK7WaH6Qywypmc3VIDyydmYTe",
-        "d": "S7Z1TuL05WHge8od0_mW8b3sRM747caCffsLwS6JZ-c"
-      }
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk",
-      "verificationMethod": [
-        {
-          "id": "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk#z3tEEysHYz5kkgpfDAByfDVgAuvtSFLHSqoMWmmSZBU1LZtN2sDsAS6RVQSevfxv39kyty",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk",
-          "publicKeyJwk": {
-            "kty": "EC",
-            "crv": "BLS12381_G1",
-            "x": "im0OQGMTkh4YEhAl16hQwUQTcOaRqIqThqtSwksFK7WaH6Qywypmc3VIDyydmYTe"
-          }
-        }
-      ],
-      "assertionMethod": [
-        "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk#z3tEEysHYz5kkgpfDAByfDVgAuvtSFLHSqoMWmmSZBU1LZtN2sDsAS6RVQSevfxv39kyty"
-      ],
-      "authentication": [
-        "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk#z3tEEysHYz5kkgpfDAByfDVgAuvtSFLHSqoMWmmSZBU1LZtN2sDsAS6RVQSevfxv39kyty"
-      ],
-      "capabilityInvocation": [
-        "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk#z3tEEysHYz5kkgpfDAByfDVgAuvtSFLHSqoMWmmSZBU1LZtN2sDsAS6RVQSevfxv39kyty"
-      ],
-      "capabilityDelegation": [
-        "did:key:z5TcCmGLu7HrkT5FTnejDTKcH11LPMQLXMPHTRyzY4KdRvqpPLprH7s1ddWFD38cAkZoiDtofUmJVZyEweUTfwjG5H3znk3ir4tzmuDBUSNbNQ7U6jJqj5bkQLKRaQB1bpFJKGLEq3EBwsfPutL5D7p78kFeLNHznqbf5oGpik7ScaDbGLaTLh1Jtadi6VmPNNd44Cojk#z3tEEysHYz5kkgpfDAByfDVgAuvtSFLHSqoMWmmSZBU1LZtN2sDsAS6RVQSevfxv39kyty"
-      ]
-    }
-  }
-}
--- a/did/testvectors/ed25519-x25519.json
+++ b/did/testvectors/ed25519-x25519.json
@@ -1,293 +0,0 @@
-{
-  "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp": {
-    "seed": "0000000000000000000000000000000000000000000000000000000000000000",
-    "verificationKeyPair": {
-      "id": "#z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp",
-      "type": "Ed25519VerificationKey2018",
-      "controller": "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp",
-      "publicKeyBase58": "4zvwRjXUKGfvwnParsHAS3HuSVzV5cA4McphgmoCtajS"
-    },
-    "keyAgreementKeyPair": {
-      "id": "#z6LShs9GGnqk85isEBzzshkuVWrVKsRp24GnDuHk8QWkARMW",
-      "type": "X25519KeyAgreementKey2019",
-      "controller": "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp",
-      "publicKeyBase58": "7By6kV2t2d188odEM4ExAve1UithKT6dLva4dwsDT3ak",
-      "privateKeyBase58": "6QN8DfuN9hjgHgPvLXqgzqYE3jRRGRrmJQZkd5tL8paR"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/ed25519-2018/v1",
-        "https://w3id.org/security/suites/x25519-2019/v1"
-      ],
-      "id": "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp",
-          "type": "Ed25519VerificationKey2018",
-          "controller": "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp",
-          "publicKeyBase58": "4zvwRjXUKGfvwnParsHAS3HuSVzV5cA4McphgmoCtajS"
-        },
-        {
-          "id": "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6LShs9GGnqk85isEBzzshkuVWrVKsRp24GnDuHk8QWkARMW",
-          "type": "X25519KeyAgreementKey2019",
-          "controller": "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp",
-          "publicKeyBase58": "7By6kV2t2d188odEM4ExAve1UithKT6dLva4dwsDT3ak"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp"
-      ],
-      "authentication": [
-        "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp"
-      ],
-      "capabilityInvocation": [
-        "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp"
-      ],
-      "capabilityDelegation": [
-        "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp"
-      ],
-      "keyAgreement": [
-        "did:key:z6MkiTBz1ymuepAQ4HEHYSF1H8quG5GLVVQR3djdX3mDooWp#z6LShs9GGnqk85isEBzzshkuVWrVKsRp24GnDuHk8QWkARMW"
-      ]
-    }
-  },
-  "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG": {
-    "seed": "0000000000000000000000000000000000000000000000000000000000000001",
-    "verificationKeyPair": {
-      "id": "#z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG",
-      "type": "Ed25519VerificationKey2018",
-      "controller": "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG",
-      "publicKeyBase58": "6ASf5EcmmEHTgDJ4X4ZT5vT6iHVJBXPg5AN5YoTCpGWt"
-    },
-    "keyAgreementKeyPair": {
-      "id": "#z6LSrHyXiPBhUbvPUtyUCdf32sniiMGPTAesgHrtEa4FePtr",
-      "type": "X25519KeyAgreementKey2019",
-      "controller": "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG",
-      "publicKeyBase58": "FcoNC5NqP9CePWbhfz95iHaEsCjGkZUioK9Ck7Qiw286",
-      "privateKeyBase58": "HBTcN2MrXNRj9xF9oi8QqYyuEPv3JLLjQKuEgW9oxVKP"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/ed25519-2018/v1",
-        "https://w3id.org/security/suites/x25519-2019/v1"
-      ],
-      "id": "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG#z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG",
-          "type": "Ed25519VerificationKey2018",
-          "controller": "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG",
-          "publicKeyBase58": "6ASf5EcmmEHTgDJ4X4ZT5vT6iHVJBXPg5AN5YoTCpGWt"
-        },
-        {
-          "id": "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG#z6LSrHyXiPBhUbvPUtyUCdf32sniiMGPTAesgHrtEa4FePtr",
-          "type": "X25519KeyAgreementKey2019",
-          "controller": "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG",
-          "publicKeyBase58": "FcoNC5NqP9CePWbhfz95iHaEsCjGkZUioK9Ck7Qiw286"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG#z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG"
-      ],
-      "authentication": [
-        "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG#z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG"
-      ],
-      "capabilityInvocation": [
-        "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG#z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG"
-      ],
-      "capabilityDelegation": [
-        "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG#z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG"
-      ],
-      "keyAgreement": [
-        "did:key:z6MkjchhfUsD6mmvni8mCdXHw216Xrm9bQe2mBH1P5RDjVJG#z6LSrHyXiPBhUbvPUtyUCdf32sniiMGPTAesgHrtEa4FePtr"
-      ]
-    }
-  },
-  "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf": {
-    "seed": "0000000000000000000000000000000000000000000000000000000000000002",
-    "verificationKeyPair": {
-      "id": "#z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf",
-      "type": "Ed25519VerificationKey2018",
-      "controller": "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf",
-      "publicKeyBase58": "8pM1DN3RiT8vbom5u1sNryaNT1nyL8CTTW3b5PwWXRBH"
-    },
-    "keyAgreementKeyPair": {
-      "id": "#z6LSkkqoZRC34AEpbkhZCqLDcHQVAxuLpQ7kC8XCXMVUfvjE",
-      "type": "X25519KeyAgreementKey2019",
-      "controller": "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf",
-      "publicKeyBase58": "A5fe37PAxhX5WNKngBpGHhC1KpNE7nwbK9oX2tqwxYxU",
-      "privateKeyBase58": "ACa4PPJ1LnPNq1iwS33V3Akh7WtnC71WkKFZ9ccM6sX2"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/ed25519-2018/v1",
-        "https://w3id.org/security/suites/x25519-2019/v1"
-      ],
-      "id": "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf#z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf",
-          "type": "Ed25519VerificationKey2018",
-          "controller": "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf",
-          "publicKeyBase58": "8pM1DN3RiT8vbom5u1sNryaNT1nyL8CTTW3b5PwWXRBH"
-        },
-        {
-          "id": "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf#z6LSkkqoZRC34AEpbkhZCqLDcHQVAxuLpQ7kC8XCXMVUfvjE",
-          "type": "X25519KeyAgreementKey2019",
-          "controller": "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf",
-          "publicKeyBase58": "A5fe37PAxhX5WNKngBpGHhC1KpNE7nwbK9oX2tqwxYxU"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf#z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf"
-      ],
-      "authentication": [
-        "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf#z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf"
-      ],
-      "capabilityInvocation": [
-        "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf#z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf"
-      ],
-      "capabilityDelegation": [
-        "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf#z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf"
-      ],
-      "keyAgreement": [
-        "did:key:z6MknGc3ocHs3zdPiJbnaaqDi58NGb4pk1Sp9WxWufuXSdxf#z6LSkkqoZRC34AEpbkhZCqLDcHQVAxuLpQ7kC8XCXMVUfvjE"
-      ]
-    }
-  },
-  "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ": {
-    "seed": "0000000000000000000000000000000000000000000000000000000000000003",
-    "verificationKeyPair": {
-      "id": "#z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ",
-      "type": "Ed25519VerificationKey2018",
-      "controller": "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ",
-      "publicKeyBase58": "HPYVwAQmskwT1qEEeRzhoomyfyupJGASQQtCXSNG8XS2"
-    },
-    "keyAgreementKeyPair": {
-      "id": "#z6LSiUo6AEDat8Ze4nQzDo67SGuHLLwsUGkxndHGUjsywHow",
-      "type": "X25519KeyAgreementKey2019",
-      "controller": "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ",
-      "publicKeyBase58": "7ocvdvQinfqtyQ3Dh9aA7ggoVCQkmfaoueZazHETDv3B",
-      "privateKeyBase58": "FZrzd1osCnbK6y6MJzMBW1RcVfL524sNKhSbqRwMuwHT"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/ed25519-2018/v1",
-        "https://w3id.org/security/suites/x25519-2019/v1"
-      ],
-      "id": "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ#z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ",
-          "type": "Ed25519VerificationKey2018",
-          "controller": "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ",
-          "publicKeyBase58": "HPYVwAQmskwT1qEEeRzhoomyfyupJGASQQtCXSNG8XS2"
-        },
-        {
-          "id": "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ#z6LSiUo6AEDat8Ze4nQzDo67SGuHLLwsUGkxndHGUjsywHow",
-          "type": "X25519KeyAgreementKey2019",
-          "controller": "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ",
-          "publicKeyBase58": "7ocvdvQinfqtyQ3Dh9aA7ggoVCQkmfaoueZazHETDv3B"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ#z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ"
-      ],
-      "authentication": [
-        "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ#z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ"
-      ],
-      "capabilityInvocation": [
-        "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ#z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ"
-      ],
-      "capabilityDelegation": [
-        "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ#z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ"
-      ],
-      "keyAgreement": [
-        "did:key:z6MkvqoYXQfDDJRv8L4wKzxYeuKyVZBfi9Qo6Ro8MiLH3kDQ#z6LSiUo6AEDat8Ze4nQzDo67SGuHLLwsUGkxndHGUjsywHow"
-      ]
-    }
-  },
-  "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU": {
-    "seed": "0000000000000000000000000000000000000000000000000000000000000005",
-    "verificationKeyPair": {
-      "id": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU",
-      "type": "JsonWebKey2020",
-      "controller": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU",
-      "publicKeyJwk": {
-        "kty": "OKP",
-        "crv": "Ed25519",
-        "x": "_eT7oDCtAC98L31MMx9J0T-w7HR-zuvsY08f9MvKne8"
-      },
-      "privateKeyJwk": {
-        "kty": "OKP",
-        "crv": "Ed25519",
-        "x": "_eT7oDCtAC98L31MMx9J0T-w7HR-zuvsY08f9MvKne8",
-        "d": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAU"
-      }
-    },
-    "keyAgreementKeyPair": {
-      "id": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6LSmArkPSdTKjEESsExHRrSwUzYUHgDuWDewXc4nocasvFU",
-      "type": "JsonWebKey2020",
-      "controller": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU",
-      "publicKeyJwk": {
-        "kty": "OKP",
-        "crv": "X25519",
-        "x": "jRIz3oriXDNZmnb35XQb7K1UIlz3ae1ao1YSqLeBXHs"
-      },
-      "privateKeyJwk": {
-        "kty": "OKP",
-        "crv": "X25519",
-        "x": "jRIz3oriXDNZmnb35XQb7K1UIlz3ae1ao1YSqLeBXHs",
-        "d": "aEAAB3VBFPCQtgF3N__wRiXhMOgeiRGstpPC3gnJ1Eo"
-      }
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU",
-          "publicKeyJwk": {
-            "kty": "OKP",
-            "crv": "Ed25519",
-            "x": "_eT7oDCtAC98L31MMx9J0T-w7HR-zuvsY08f9MvKne8"
-          }
-        },
-        {
-          "id": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6LSmArkPSdTKjEESsExHRrSwUzYUHgDuWDewXc4nocasvFU",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU",
-          "publicKeyJwk": {
-            "kty": "OKP",
-            "crv": "X25519",
-            "x": "jRIz3oriXDNZmnb35XQb7K1UIlz3ae1ao1YSqLeBXHs"
-          }
-        }
-      ],
-      "assertionMethod": [
-        "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU"
-      ],
-      "authentication": [
-        "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU"
-      ],
-      "capabilityInvocation": [
-        "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU"
-      ],
-      "capabilityDelegation": [
-        "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU"
-      ],
-      "keyAgreement": [
-        "did:key:z6MkwYMhwTvsq376YBAcJHy3vyRWzBgn5vKfVqqDCgm7XVKU#z6LSmArkPSdTKjEESsExHRrSwUzYUHgDuWDewXc4nocasvFU"
-      ]
-    }
-  }
-}
--- a/did/testvectors/nist-curves.json
+++ b/did/testvectors/nist-curves.json
@@ -1,371 +0,0 @@
-{
-  "did:key:zDnaerx9CtbPJ1q36T5Ln5wYt3MQYeGRG5ehnPAmxcf5mDZpv": {
-    "verificationMethod": {
-      "id": "#zDnaerx9CtbPJ1q36T5Ln5wYt3MQYeGRG5ehnPAmxcf5mDZpv",
-      "type": "JsonWebKey2020",
-      "controller": "did:key:zDnaerx9CtbPJ1q36T5Ln5wYt3MQYeGRG5ehnPAmxcf5mDZpv",
-      "publicKeyJwk": {
-        "kty": "EC",
-        "crv": "P-256",
-        "x": "igrFmi0whuihKnj9R3Om1SoMph72wUGeFaBbzG2vzns",
-        "y": "efsX5b10x8yjyrj4ny3pGfLcY7Xby1KzgqOdqnsrJIM"
-      },
-      "privateKeyJwk": {
-        "kty": "EC",
-        "crv": "P-256",
-        "x": "igrFmi0whuihKnj9R3Om1SoMph72wUGeFaBbzG2vzns",
-        "y": "efsX5b10x8yjyrj4ny3pGfLcY7Xby1KzgqOdqnsrJIM",
-        "d": "gPh-VvVS8MbvKQ9LSVVmfnxnKjHn4Tqj0bmbpehRlpc"
-      }
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key:zDnaerx9CtbPJ1q36T5Ln5wYt3MQYeGRG5ehnPAmxcf5mDZpv",
-      "verificationMethod": [
-        {
-          "id": "did:key:zDnaerx9CtbPJ1q36T5Ln5wYt3MQYeGRG5ehnPAmxcf5mDZpv#zDnaerx9CtbPJ1q36T5Ln5wYt3MQYeGRG5ehnPAmxcf5mDZpv",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:zDnaerx9CtbPJ1q36T5Ln5wYt3MQYeGRG5ehnPAmxcf5mDZpv",
-          "publicKeyJwk": {
-            "kty": "EC",
-            "crv": "P-256",
-            "x": "igrFmi0whuihKnj9R3Om1SoMph72wUGeFaBbzG2vzns",
-            "y": "efsX5b10x8yjyrj4ny3pGfLcY7Xby1KzgqOdqnsrJIM"
-          }
-        }
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-      "assertionMethod": [
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-        "crv": "P-521",
-        "x": "AQgyFy6EwH3_u_KXPw8aTXTY7WSVytmbuJeFpq4U6LipxtSmBJe_jjRzms9qubnwm_fGoHMQlvQ1vzS2YLusR2V0",
-        "y": "Ab06MCcgoG7dM2I-VppdLV1k3lDoeHMvyYqHVfP05Ep2O7Zu0Qwd6IVzfZi9K0KMDud22wdnGUpUtFukZo0EeO15",
-        "d": "AbheZ-AA58LP4BpopCGCLH8ZoMdkdJaVOS6KK2NNmDCisr5_Ifxl-qcunrkOJ0CSauA4LJyNbCWcy28Bo6zgHTXQ"
-      }
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f",
-      "verificationMethod": [
-        {
-          "id": "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f#z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f",
-          "publicKeyJwk": {
-            "kty": "EC",
-            "crv": "P-521",
-            "x": "AQgyFy6EwH3_u_KXPw8aTXTY7WSVytmbuJeFpq4U6LipxtSmBJe_jjRzms9qubnwm_fGoHMQlvQ1vzS2YLusR2V0",
-            "y": "Ab06MCcgoG7dM2I-VppdLV1k3lDoeHMvyYqHVfP05Ep2O7Zu0Qwd6IVzfZi9K0KMDud22wdnGUpUtFukZo0EeO15"
-          }
-        }
-      ],
-      "assertionMethod": [
-        "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f#z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f"
-      ],
-      "authentication": [
-        "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f#z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f"
-      ],
-      "capabilityInvocation": [
-        "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f#z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f"
-      ],
-      "capabilityDelegation": [
-        "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f#z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f"
-      ],
-      "keyAgreement": [
-        "did:key:z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f#z2J9gcGdb2nEyMDmzQYv2QZQcM1vXktvy1Pw4MduSWxGabLZ9XESSWLQgbuPhwnXN7zP7HpTzWqrMTzaY5zWe6hpzJ2jnw4f"
-      ]
-    }
-  },
-  "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb": {
-    "verificationMethod": {
-      "id": "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb#zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb",
-      "type": "P256Key2021",
-      "controller": "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb",
-      "publicKeyBase58": "ekVhkcBFq3w7jULLkBVye6PwaTuMbhJYuzwFnNcgQAPV",
-      "privateKeyBase58": "9p4VRzdmhsnq869vQjVCTrRry7u4TtfRxhvBFJTGU2Cp"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/multikey-2021/v1"
-      ],
-      "id": "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb",
-      "verificationMethod": [
-        {
-          "id": "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb#zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb",
-          "type": "P256Key2021",
-          "controller": "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb",
-          "publicKeyBase58": "ekVhkcBFq3w7jULLkBVye6PwaTuMbhJYuzwFnNcgQAPV"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb#zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb"
-      ],
-      "authentication": [
-        "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb#zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb"
-      ],
-      "capabilityInvocation": [
-        "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb#zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb"
-      ],
-      "capabilityDelegation": [
-        "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb#zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb"
-      ],
-      "keyAgreement": [
-        "did:key:zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb#zDnaeTiq1PdzvZXUaMdezchcMJQpBdH2VN4pgrrEhMCCbmwSb"
-      ]
-    }
-  }
-}
--- a/did/testvectors/rsa.json
+++ b/did/testvectors/rsa.json
@@ -1,106 +0,0 @@
-{
-  "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i": {
-    "publicKeyJwk": {
-      "kty": "RSA",
-      "n": "sbX82NTV6IylxCh7MfV4hlyvaniCajuP97GyOqSvTmoEdBOflFvZ06kR_9D6ctt45Fk6hskfnag2GG69NALVH2o4RCR6tQiLRpKcMRtDYE_thEmfBvDzm_VVkOIYfxu-Ipuo9J_S5XDNDjczx2v-3oDh5-CIHkU46hvFeCvpUS-L8TJSbgX0kjVk_m4eIb9wh63rtmD6Uz_KBtCo5mmR4TEtcLZKYdqMp3wCjN-TlgHiz_4oVXWbHUefCEe8rFnX1iQnpDHU49_SaXQoud1jCaexFn25n-Aa8f8bc5Vm-5SeRwidHa6ErvEhTvf1dz6GoNPp2iRvm-wJ1gxwWJEYPQ",
-      "e": "AQAB"
-    },
-    "privateKeyJwk": {
-      "kty": "RSA",
-      "n": "sbX82NTV6IylxCh7MfV4hlyvaniCajuP97GyOqSvTmoEdBOflFvZ06kR_9D6ctt45Fk6hskfnag2GG69NALVH2o4RCR6tQiLRpKcMRtDYE_thEmfBvDzm_VVkOIYfxu-Ipuo9J_S5XDNDjczx2v-3oDh5-CIHkU46hvFeCvpUS-L8TJSbgX0kjVk_m4eIb9wh63rtmD6Uz_KBtCo5mmR4TEtcLZKYdqMp3wCjN-TlgHiz_4oVXWbHUefCEe8rFnX1iQnpDHU49_SaXQoud1jCaexFn25n-Aa8f8bc5Vm-5SeRwidHa6ErvEhTvf1dz6GoNPp2iRvm-wJ1gxwWJEYPQ",
-      "e": "AQAB",
-      "d": "Eym3sT4KLwBzo5pl5nY83-hAti92iLQRizkrKe22RbNi9Y1kKOBatdtGaJqFVztZZu5ERGKNuTd5VdsjJeekSbXviVGRtdHNCvgmRZlWA5261AgIUPxMmKW062GmGJbKQvscFfziBgHK6tyDBd8cZavqMFHi-7ilMYF7IsFBcJKM85x_30pnfd4YwhGQIc9hzv238aOwYKg8c-MzYhEVUnL273jaiLVlfZWQ5ca-GXJHmdOb_Y4fE5gpXfPFBseqleXsMp0VuXxCEsN30LIJHYscdPtbzLD3LFbuMJglFbQqYqssqymILGqJ7Tc2mB2LmXevfqRWz5D7A_K1WzvuoQ",
-      "p": "ANwlk-eVXPQplCmr7VddX8MAlN5YWvfXkbJe2KOhyS7naSlfMyeW6I0z6q6MAI4h8cs9yEzwmN1oEl_6tZ_-NPd1Oda2Hq5jHx0Jq2P5exIMMbzTTHbB-LjMB4c-b1DZLOrL7ZpCS-CcEHvBz4phzHa7gqz2SrNIGozufbjS_tK5",
-      "q": "AM6nKRFqRgHiUtGc0xJawpXJeokGhJQFfinDlakjkptuRQNv0BOz8fRUxk6zwwYrx-T_Yk-0oAFsD8qWIgiXg8Wf0bdRW0L0dIH4c6ff3mSREXeAT2h3XDaF0F1YKns08WyYWtOuIiYWChyO9sweK7AUuaOJ-6lr6lElzTGHVf-l",
-      "dp": "AIHFBPK2cRzchaIq3rVpLVHdveNzYexG_nOOxVVvwRANCUiB_b2Qj3Ts7aIGlS0zhTyxJql0Cig5eNtrBjVRvBdC2t1ebaeOdoC_enBsV8fDuG3-gExg-ySz4JwwiZ2252tg2qbb_a5hULYjARwpmkVDMzyR0mbsUfpRe3q_pcbB",
-      "dq": "Id2bCVOVLXHdiKReor9k7A8cmaAL0gYkasu2lwVRXU9w1-NXAiOXHydVaEhlSXmbRJflkJJVNmZzIAwCf830tko-oAAhKJPPFA2XRoeVdn2fkynf2YrV_cloICP2skI23kkJeW8sAXnTJmL3ZvP6zNxYn8hZCaa5u5qqSdeX7FE",
-      "qi": "WKIToXXnjl7GDbz7jCNbX9nWYOE5BDNzVmwiVOnyGoTZfwJ_qtgizj7pOapxi6dT9S9mMavmeAi6LAsEe1WUWtaKSNhbNh0PUGGXlXHGlhkS8jI1ot0e-scrHAuACE567YQ4VurpNorPKtZ5UENXIn74DEmt4l5m6902VF3X5Wo"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i",
-      "verificationMethod": [
-        {
-          "id": "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i#z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i",
-          "publicKeyJwk": {
-            "kty": "RSA",
-            "n": "sbX82NTV6IylxCh7MfV4hlyvaniCajuP97GyOqSvTmoEdBOflFvZ06kR_9D6ctt45Fk6hskfnag2GG69NALVH2o4RCR6tQiLRpKcMRtDYE_thEmfBvDzm_VVkOIYfxu-Ipuo9J_S5XDNDjczx2v-3oDh5-CIHkU46hvFeCvpUS-L8TJSbgX0kjVk_m4eIb9wh63rtmD6Uz_KBtCo5mmR4TEtcLZKYdqMp3wCjN-TlgHiz_4oVXWbHUefCEe8rFnX1iQnpDHU49_SaXQoud1jCaexFn25n-Aa8f8bc5Vm-5SeRwidHa6ErvEhTvf1dz6GoNPp2iRvm-wJ1gxwWJEYPQ",
-            "e": "AQAB"
-          }
-        }
-      ],
-      "authentication": [
-        "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i#z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i"
-      ],
-      "assertionMethod": [
-        "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i#z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i"
-      ],
-      "capabilityDelegation": [
-        "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i#z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i"
-      ],
-      "capabilityInvocation": [
-        "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i#z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i"
-      ],
-      "keyAgreement": [
-        "did:key:z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i#z4MXj1wBzi9jUstyPMS4jQqB6KdJaiatPkAtVtGc6bQEQEEsKTic4G7Rou3iBf9vPmT5dbkm9qsZsuVNjq8HCuW1w24nhBFGkRE4cd2Uf2tfrB3N7h4mnyPp1BF3ZttHTYv3DLUPi1zMdkULiow3M1GfXkoC6DoxDUm1jmN6GBj22SjVsr6dxezRVQc7aj9TxE7JLbMH1wh5X3kA58H3DFW8rnYMakFGbca5CB2Jf6CnGQZmL7o5uJAdTwXfy2iiiyPxXEGerMhHwhjTA1mKYobyk2CpeEcmvynADfNZ5MBvcCS7m3XkFCMNUYBS9NQ3fze6vMSUPsNa6GVYmKx2x6JrdEjCk3qRMMmyjnjCMfR4pXbRMZa3i"
-      ]
-    }
-  },
-  "did:key: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": {
-    "publicKeyJwk": {
-      "kty": "RSA",
-      "n": "qMCkFFRFWtzUyZeK8mgJdyM6SEQcXC5E6JwCRVDld-jlJs8sXNOE_vliexq34wZRQ4hk53-JPFlvZ_QjRgIxdUxSMiZ3S5hlNVvvRaue6SMakA9ugQhnfXaWORro0UbPuHLms-bg5StDP8-8tIezu9c1H1FjwPcdbV6rAvKhyhnsM10qP3v2CPbdE0q3FOsihoKuTelImtO110E7N6fLn4U3EYbC4OyViqlrP1o_1M-R-tiM1cb4pD7XKJnIs6ryZdfOQSPBJwjNqSdN6Py_tdrFgPDTyacSSdpTVADOM2IMAoYbhV1N5APhnjOHBRFyKkF1HffQKpmXQLBqvUNNjuhmpVKWBtrTdcCKrglFXiw0cKGHKxIirjmiOlB_HYHg5UdosyE3_1Txct2U7-WBB6QXak1UgxCzgKYBDI8UPA0RlkUuHHP_Zg0fVXrXIInHO04MYxUeSps5qqyP6dJBu_v_BDn3zUq6LYFwJ_-xsU7zbrKYB4jaRlHPoCj_eDC-rSA2uQ4KXHBB8_aAqNFC9ukWxc26Ifz9dF968DLuL30bi-ZAa2oUh492Pw1bg89J7i4qTsOOfpQvGyDV7TGhKuUG3Hbumfr2w16S-_3EI2RIyd1nYsflE6ZmCkZQMG_lwDAFXaqfyGKEDouJuja4XH8r4fGWeGTrozIoniXT1HU",
-      "e": "AQAB"
-    },
-    "privateKeyJwk": {
-      "kty": "RSA",
-      "n": "qMCkFFRFWtzUyZeK8mgJdyM6SEQcXC5E6JwCRVDld-jlJs8sXNOE_vliexq34wZRQ4hk53-JPFlvZ_QjRgIxdUxSMiZ3S5hlNVvvRaue6SMakA9ugQhnfXaWORro0UbPuHLms-bg5StDP8-8tIezu9c1H1FjwPcdbV6rAvKhyhnsM10qP3v2CPbdE0q3FOsihoKuTelImtO110E7N6fLn4U3EYbC4OyViqlrP1o_1M-R-tiM1cb4pD7XKJnIs6ryZdfOQSPBJwjNqSdN6Py_tdrFgPDTyacSSdpTVADOM2IMAoYbhV1N5APhnjOHBRFyKkF1HffQKpmXQLBqvUNNjuhmpVKWBtrTdcCKrglFXiw0cKGHKxIirjmiOlB_HYHg5UdosyE3_1Txct2U7-WBB6QXak1UgxCzgKYBDI8UPA0RlkUuHHP_Zg0fVXrXIInHO04MYxUeSps5qqyP6dJBu_v_BDn3zUq6LYFwJ_-xsU7zbrKYB4jaRlHPoCj_eDC-rSA2uQ4KXHBB8_aAqNFC9ukWxc26Ifz9dF968DLuL30bi-ZAa2oUh492Pw1bg89J7i4qTsOOfpQvGyDV7TGhKuUG3Hbumfr2w16S-_3EI2RIyd1nYsflE6ZmCkZQMG_lwDAFXaqfyGKEDouJuja4XH8r4fGWeGTrozIoniXT1HU",
-      "e": "AQAB",
-      "d": "TMq1H-clVG7PihkjCqJbRFLMj9wmx6_qfauYwPBKK-HYfWujdW5vxBO6Q-jpqy7RxhiISmxYCBVuw_BuKMqQtR8Q_G9StBzaWYjHfn3Vp6Poz4umLqOjbI2NWNks_ybpGbd30oAK8V5ZkO04ozJpkN4i92hzK3mIc5-z1HiTNUPMn6cStab0VCn6em_ylltV774CEcRJ3OLgid7OUspRt_rID3qyreYbOulTu5WXHIGEnZDzrciIlz1dbcVldpUhD0VAP5ZErD2uUP5oztBNcTTn0YBF8CrOALuQVdaz_t_sNS3P0kWeT1eQ0QwDskO5Hw-Aey2tFeWk1bQyLoQ1A0jsw8mDbkO2zrGfJoxmVBkueTK-q64_n1kV7W1aeJFRj4NwEWmwcrs8GSOGOn38fGB_Y3Kci04qvD6L0QZbFkAVzcJracnxbTdHCEX0jsAAPbYC8M_8PyrPJvPC4IAAWTRrSRbysb7r7viRf4A1vTK9VT7uYyxj7Kzx2cU12d9QBXYfdQ2744bUE7HqN-Vh2rHvv2l5v6vzBRoZ5_OhHHVeUYwC9LouE9lSVAObbFM-Qe1SvzbbwN91LziI7UzUc_xMAEiNwt6PpnIAWAhdvSRawEllTwUcn89udHd5UhiAcm-RQOqXIdA9Aly6d8TT8R1p-ZnQ_gbZyBZeS39AuvU=",
-      "p": "1p4cypsJeTyVXXc5bQpvzVenPy78OHXtGcFQnbTjW8x1GsvJ-rlHAcjUImd44pgNQNe-iYpeUg3KqfONeedNgQCFd8kP7GoVAd45mEvsGBXvjoCXOBMQlsf8UU_hm_LKhVvTvTmMGoudnNv5qYNDMCGJGzwoG-aSvROlIoXzHmDnusZ-hKsDxM9j0PPz21t99Y_Fr30Oq3FIWXPVmLYmfyZYQkxm9a9WNMkqRbwJuMwGI6V9ABsQ1dW_KJzp_aEBbJLcDr9DsWhm9ErLeAlzyaDYEai6wCtKm9em4LDwCbKhJq3hWEp1sIG-hwx1sk7N4i-b8lBijjEQE-dbSQxUlw==",
-      "q": "yUqMejfrttGujadj7Uf7q91KM7nbQGny4TjD-CqibcFE-s2_DExCgP1wfhUPfJr2uPQDIe4g12uaNoa5GbCSDaQwEmQpurC_5mazt-z-_tbI24hoPQm5Hq67fZz-jDE_3OccLPLIWtajJqmxHbbB5VqskMuXo8KDxPRfBQBhykmb9_5M8pY2ggZOV4shCUn5E9nOnvibvw5Wx4CBtWUtca4rhpd3mVen1d8xCe4xTG_ni_w1lwdxzU1GmRFqgTuZWzL0r2FKzJg7hju1SOEe4tKMxQ-xs2HyNaMM__SLsNmS3lsYZ8r2hqcjEMQQZI0T_O-3BjIpyg986P8j055E0w==",
-      "dp": "DujzJRw6P0L3OYQT6EBmXgSt6NTRzvZaX4SvnhU4CmOc6xynTpTamwQhwLYhjtRzb0LNyO5k-RxeLQpvlL1-A-1OWHEOeyUvim6u36a-ozm659KFLu8cIu2H2PpMuTHX4gXsIuRBmIKEk6YwpRcqbsiVpt-6BZ4yKZKY0Vou9rhSwQYTOhJLc7vYumaIVX_4szumxzdP8pcvKI_EkhRtfj3iudBnAsCIo6gqGKgkoMMD1iwkEALRW5m66w5jrywlVi6pvRiKkmOna2da1V8KvUJAYJGxT7JyP3tu64M_Wd0gFvjTg_fAT1_kJau27YlOAl2-Xso43poH_OoAzIVfxw==",
-      "dq": "XI6Z76z9BxB9mgcpTLc3wzw63XQNnB3bn7JRcjBwhdVD2at3uLjsL5HaAy-98kbzQfJ56kUr9sI0o_Po8yYc0ob3z80c3wpdAx2gb-dbDWVH8KJVhBOPestPzR--cEpJGlNuwkBU3mgplyKaHZamq8a46M-lB5jurEbN1mfpj3GvdSYKzdVCdSFfLqP76eCI1pblinW4b-6w-oVdn0JJ1icHPpkxVmJW-2Hok69iHcqrBtRO9AZpTsTEvKekeI4mIyhYGLi9AzzQyhV0c3GImTXFoutng5t7GyzBUoRpI0W4YeQzYa6TEzGRTylIfGPemATF_OReENp0TlLbb3gsHw==",
-      "qi": "m7uZk4AsOfJ1V2RY8lmEF518toCV7juKuS_b_OUx8B0dRG0_kbF1cH-Tmrgsya3bwkYx5HeZG81rX7SRjh-0nVPOMW3tGqU5U9f59DXqvOItJIJ6wvWvWXnuna2-NstYCotFQWadIKjk4wjEKj-a4NJt4D_F4csyeyqWOH2DiUFzBGGxxdEoD5t_HEeNXuWQ6-SiV0x5ZVMln3TSh7IOMl70Smm8HcQF5mOsWg3N0wIg-yffxPrs6r15TRuW1MfT-bZk2GLrtHF1TkIoT1e00jWK4eBl2oRxiJGONUBMTEHV85Fr0yztnA99AgHnrMbE_4ehvev4h5DEWvFyFuJN_g=="
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key: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",
-      "verificationMethod": [
-        {
-          "id": "did:key:zgghBUVkqmWS8e1ioRVp2WN9Vw6x4NvnE9PGAyQsPqM3fnfPf8EdauiRVfBTcVDyzhqM5FFC7ekAvuV1cJHawtfgB9wDcru1hPDobk3hqyedijhgWmsYfJCmodkiiFnjNWATE7PvqTyoCjcmrc8yMRXmFPnoASyT5beUd4YZxTE9VfgmavcPy3BSouNmASMQ8xUXeiRwjb7xBaVTiDRjkmyPD7NYZdXuS93gFhyDFr5b3XLg7Rfj9nHEqtHDa7NmAX7iwDAbMUFEfiDEf9hrqZmpAYJracAjTTR8Cvn6mnDXMLwayNG8dcsXFodxok2qksYF4D8ffUxMRmyyQVQhhhmdSi4YaMPqTnC1J6HTG9Yfb98yGSVaWi4TApUhLXFow2ZvB6vqckCNhjCRL2R4MDUSk71qzxWHgezKyDeyThJgdxydrn1osqH94oSeA346eipkJvKqYREXBKwgB5VL6WF4qAK6sVZxJp2dQBfCPVZ4EbsBQaJXaVK7cNcWG8tZBFWZ79gG9Cu6C4u8yjBS8Ux6dCcJPUTLtixQu4z2n5dCsVSNdnP1EEs8ZerZo5pBgc68w4Yuf9KL3xVxPnAB1nRCBfs9cMU6oL1EdyHbqrTfnjE8HpY164akBqe92LFVsk8RusaGsVPrMekT8emTq5y8v8CabuZg5rDs3f9NPEtogjyx49wiub1FecM5B7QqEcZSYiKHgF4mfkteT2#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",
-          "type": "JsonWebKey2020",
-          "controller": "did:key: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",
-          "publicKeyJwk": {
-            "kty": "RSA",
-            "n": "qMCkFFRFWtzUyZeK8mgJdyM6SEQcXC5E6JwCRVDld-jlJs8sXNOE_vliexq34wZRQ4hk53-JPFlvZ_QjRgIxdUxSMiZ3S5hlNVvvRaue6SMakA9ugQhnfXaWORro0UbPuHLms-bg5StDP8-8tIezu9c1H1FjwPcdbV6rAvKhyhnsM10qP3v2CPbdE0q3FOsihoKuTelImtO110E7N6fLn4U3EYbC4OyViqlrP1o_1M-R-tiM1cb4pD7XKJnIs6ryZdfOQSPBJwjNqSdN6Py_tdrFgPDTyacSSdpTVADOM2IMAoYbhV1N5APhnjOHBRFyKkF1HffQKpmXQLBqvUNNjuhmpVKWBtrTdcCKrglFXiw0cKGHKxIirjmiOlB_HYHg5UdosyE3_1Txct2U7-WBB6QXak1UgxCzgKYBDI8UPA0RlkUuHHP_Zg0fVXrXIInHO04MYxUeSps5qqyP6dJBu_v_BDn3zUq6LYFwJ_-xsU7zbrKYB4jaRlHPoCj_eDC-rSA2uQ4KXHBB8_aAqNFC9ukWxc26Ifz9dF968DLuL30bi-ZAa2oUh492Pw1bg89J7i4qTsOOfpQvGyDV7TGhKuUG3Hbumfr2w16S-_3EI2RIyd1nYsflE6ZmCkZQMG_lwDAFXaqfyGKEDouJuja4XH8r4fGWeGTrozIoniXT1HU",
-            "e": "AQAB"
-          }
-        }
-      ],
-      "authentication": [
-        "did:key: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#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"
-      ],
-      "assertionMethod": [
-        "did:key: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#zgghBUVkqmWS8e1ioRVp2WN9Vw6x4NvnE9PGAyQsPqM3fnfPf8EdauiRVfBTcVDyzhqM5FFC7ekAvuV1cJHawtfgB9wDcru1hPDobk3hqyedijhgWmsYfJCmodkiiFnjNWATE7PvqTyoCjcmrc8yMRXmFPnoASyT5beUd4YZxTE9VfgmavcPy3BSouNmASMQ8xUXeiRwjb7xBaVTiDRjkmyPD7NYZdXuS93gFhyDFr5b3XLg7Rfj9nHEqtHDa7NmAX7iwDAbMUFEfiDEf9hrqZmpAYJracAjTTR8Cvn6mnDXMLwayNG8dcsXFodxok2qksYF4D8ffUxMRmyyQVQhhhmdSi4YaMPqTnC1J6HTG9Yfb98yGSVaWi4TApUhLXFow2ZvB6vqckCNhjCRL2R4MDUSk71qzxWHgezKyDeyThJgdxydrn1osqH94oSeA346eipkJvKqYREXBKwgB5VL6WF4qAK6sVZxJp2dQBfCPVZ4EbsBQaJXaVK7cNcWG8tZBFWZ79gG9Cu6C4u8yjBS8Ux6dCcJPUTLtixQu4z2n5dCsVSNdnP1EEs8ZerZo5pBgc68w4Yuf9KL3xVxPnAB1nRCBfs9cMU6oL1EdyHbqrTfnjE8HpY164akBqe92LFVsk8RusaGsVPrMekT8emTq5y8v8CabuZg5rDs3f9NPEtogjyx49wiub1FecM5B7QqEcZSYiKHgF4mfkteT2"
-      ],
-      "capabilityDelegation": [
-        "did:key:zgghBUVkqmWS8e1ioRVp2WN9Vw6x4NvnE9PGAyQsPqM3fnfPf8EdauiRVfBTcVDyzhqM5FFC7ekAvuV1cJHawtfgB9wDcru1hPDobk3hqyedijhgWmsYfJCmodkiiFnjNWATE7PvqTyoCjcmrc8yMRXmFPnoASyT5beUd4YZxTE9VfgmavcPy3BSouNmASMQ8xUXeiRwjb7xBaVTiDRjkmyPD7NYZdXuS93gFhyDFr5b3XLg7Rfj9nHEqtHDa7NmAX7iwDAbMUFEfiDEf9hrqZmpAYJracAjTTR8Cvn6mnDXMLwayNG8dcsXFodxok2qksYF4D8ffUxMRmyyQVQhhhmdSi4YaMPqTnC1J6HTG9Yfb98yGSVaWi4TApUhLXFow2ZvB6vqckCNhjCRL2R4MDUSk71qzxWHgezKyDeyThJgdxydrn1osqH94oSeA346eipkJvKqYREXBKwgB5VL6WF4qAK6sVZxJp2dQBfCPVZ4EbsBQaJXaVK7cNcWG8tZBFWZ79gG9Cu6C4u8yjBS8Ux6dCcJPUTLtixQu4z2n5dCsVSNdnP1EEs8ZerZo5pBgc68w4Yuf9KL3xVxPnAB1nRCBfs9cMU6oL1EdyHbqrTfnjE8HpY164akBqe92LFVsk8RusaGsVPrMekT8emTq5y8v8CabuZg5rDs3f9NPEtogjyx49wiub1FecM5B7QqEcZSYiKHgF4mfkteT2#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"
-      ],
-      "capabilityInvocation": [
-        "did:key: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#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"
-      ],
-      "keyAgreement": [
-        "did:key: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#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"
-      ]
-    }
-  }
-}
--- a/did/testvectors/secp256k1.json
+++ b/did/testvectors/secp256k1.json
@@ -1,257 +0,0 @@
-{
-  "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme": {
-    "seed": "9085d2bef69286a6cbb51623c8fa258629945cd55ca705cc4e66700396894e0c",
-    "verificationKeyPair": {
-      "id": "#zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme",
-      "type": "EcdsaSecp256k1VerificationKey2019",
-      "controller": "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme",
-      "publicKeyBase58": "23o6Sau8NxxzXcgSc3PLcNxrzrZpbLeBn1izfv3jbKhuv",
-      "privateKeyBase58": "AjA4cyPUbbfW5wr6iZeRbJLhgH3qDt6q6LMkRw36KpxT"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/secp256k1-2019/v1"
-      ],
-      "id": "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme",
-      "verificationMethod": [
-        {
-          "id": "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme#zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme",
-          "type": "EcdsaSecp256k1VerificationKey2019",
-          "controller": "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme",
-          "publicKeyBase58": "23o6Sau8NxxzXcgSc3PLcNxrzrZpbLeBn1izfv3jbKhuv"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme#zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme"
-      ],
-      "authentication": [
-        "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme#zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme"
-      ],
-      "capabilityInvocation": [
-        "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme#zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme"
-      ],
-      "capabilityDelegation": [
-        "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme#zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme"
-      ],
-      "keyAgreement": [
-        "did:key:zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme#zQ3shokFTS3brHcDQrn82RUDfCZESWL1ZdCEJwekUDPQiYBme"
-      ]
-    }
-  },
-  "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2": {
-    "seed": "f0f4df55a2b3ff13051ea814a8f24ad00f2e469af73c363ac7e9fb999a9072ed",
-    "verificationKeyPair": {
-      "id": "#zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2",
-      "type": "EcdsaSecp256k1VerificationKey2019",
-      "controller": "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2",
-      "publicKeyBase58": "291KzQhqCPC18PqH83XKhxv1HdqrdnxyS7dh15t2uNRzJ",
-      "privateKeyBase58": "HDbR1D5W3CoNbUKYzUbHH2PRF1atshtVupXgXTQhNB9E"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/secp256k1-2019/v1"
-      ],
-      "id": "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2",
-      "verificationMethod": [
-        {
-          "id": "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2#zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2",
-          "type": "EcdsaSecp256k1VerificationKey2019",
-          "controller": "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2",
-          "publicKeyBase58": "291KzQhqCPC18PqH83XKhxv1HdqrdnxyS7dh15t2uNRzJ"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2#zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2"
-      ],
-      "authentication": [
-        "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2#zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2"
-      ],
-      "capabilityInvocation": [
-        "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2#zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2"
-      ],
-      "capabilityDelegation": [
-        "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2#zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2"
-      ],
-      "keyAgreement": [
-        "did:key:zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2#zQ3shtxV1FrJfhqE1dvxYRcCknWNjHc3c5X1y3ZSoPDi2aur2"
-      ]
-    }
-  },
-  "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N": {
-    "seed": "6b0b91287ae3348f8c2f2552d766f30e3604867e34adc37ccbb74a8e6b893e02",
-    "verificationKeyPair": {
-      "id": "#zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N",
-      "type": "EcdsaSecp256k1VerificationKey2019",
-      "controller": "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N",
-      "publicKeyBase58": "oesQ92MLiAkt2pjBcJFbW7H4DvzKJv22cotjYbmC2JEe",
-      "privateKeyBase58": "8CrrWVdzDnvaS7vS5dd2HetFSebwEN46XEFrNDdtWZSZ"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/secp256k1-2019/v1"
-      ],
-      "id": "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N",
-      "verificationMethod": [
-        {
-          "id": "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N#zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N",
-          "type": "EcdsaSecp256k1VerificationKey2019",
-          "controller": "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N",
-          "publicKeyBase58": "oesQ92MLiAkt2pjBcJFbW7H4DvzKJv22cotjYbmC2JEe"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N#zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N"
-      ],
-      "authentication": [
-        "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N#zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N"
-      ],
-      "capabilityInvocation": [
-        "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N#zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N"
-      ],
-      "capabilityDelegation": [
-        "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N#zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N"
-      ],
-      "keyAgreement": [
-        "did:key:zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N#zQ3shZc2QzApp2oymGvQbzP8eKheVshBHbU4ZYjeXqwSKEn6N"
-      ]
-    }
-  },
-  "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy": {
-    "seed": "c0a6a7c560d37d7ba81ecee9543721ff48fea3e0fb827d42c1868226540fac15",
-    "verificationKeyPair": {
-      "id": "#zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy",
-      "type": "EcdsaSecp256k1VerificationKey2019",
-      "controller": "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy",
-      "publicKeyBase58": "pg3p1vprqePgUoqfAQ1TTgxhL6zLYhHyzooR1pqLxo9F",
-      "privateKeyBase58": "Dy2fnt8ba4NmbRBXas9bo1BtYgpYFr6ThpFhJbuA3PRn"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/secp256k1-2019/v1"
-      ],
-      "id": "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy",
-      "verificationMethod": [
-        {
-          "id": "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy#zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy",
-          "type": "EcdsaSecp256k1VerificationKey2019",
-          "controller": "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy",
-          "publicKeyBase58": "pg3p1vprqePgUoqfAQ1TTgxhL6zLYhHyzooR1pqLxo9F"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy#zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy"
-      ],
-      "authentication": [
-        "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy#zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy"
-      ],
-      "capabilityInvocation": [
-        "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy#zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy"
-      ],
-      "capabilityDelegation": [
-        "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy#zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy"
-      ],
-      "keyAgreement": [
-        "did:key:zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy#zQ3shadCps5JLAHcZiuX5YUtWHHL8ysBJqFLWvjZDKAWUBGzy"
-      ]
-    }
-  },
-  "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj": {
-    "seed": "175a232d440be1e0788f25488a73d9416c04b6f924bea6354bf05dd2f1a75133",
-    "verificationKeyPair": {
-      "id": "#zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj",
-      "type": "EcdsaSecp256k1VerificationKey2019",
-      "controller": "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj",
-      "publicKeyBase58": "24waDFAUAS16UpZwQQTXVEAmm17rQRjadjuAeBDW8aqL1",
-      "privateKeyBase58": "2aA6WgZnPiVMBX3LvKSTg3KaFKyzfKpvEacixB3yyTgv"
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/secp256k1-2019/v1"
-      ],
-      "id": "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj",
-      "verificationMethod": [
-        {
-          "id": "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj#zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj",
-          "type": "EcdsaSecp256k1VerificationKey2019",
-          "controller": "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj",
-          "publicKeyBase58": "24waDFAUAS16UpZwQQTXVEAmm17rQRjadjuAeBDW8aqL1"
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj#zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj"
-      ],
-      "authentication": [
-        "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj#zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj"
-      ],
-      "capabilityInvocation": [
-        "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj#zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj"
-      ],
-      "capabilityDelegation": [
-        "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj#zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj"
-      ],
-      "keyAgreement": [
-        "did:key:zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj#zQ3shptjE6JwdkeKN4fcpnYQY3m9Cet3NiHdAfpvSUZBFoKBj"
-      ]
-    }
-  },
-  "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS": {
-    "verificationKeyPair": {
-      "id": "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS#zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS",
-      "type": "JsonWebKey2020",
-      "controller": "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS",
-      "publicKeyJwk": {
-        "kty": "EC",
-        "crv": "secp256k1",
-        "x": "TEIJN9vnTq1EXMkqzo7yN_867-foKc2pREv45Fw_QA8",
-        "y": "9yiymlzdxKCiRbYq7p-ArRB-C1ytjHE-eb7RDTi6rVc"
-      },
-      "privateKeyJwk": {
-        "kty": "EC",
-        "crv": "secp256k1",
-        "x": "TEIJN9vnTq1EXMkqzo7yN_867-foKc2pREv45Fw_QA8",
-        "y": "9yiymlzdxKCiRbYq7p-ArRB-C1ytjHE-eb7RDTi6rVc",
-        "d": "J5yKm7OXFsXDEutteGYeT0CAfQJwIlHLSYkQxKtgiyo"
-      }
-    },
-    "didDocument": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS",
-      "verificationMethod": [
-        {
-          "id": "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS#zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS",
-          "publicKeyJwk": {
-            "kty": "EC",
-            "crv": "secp256k1",
-            "x": "TEIJN9vnTq1EXMkqzo7yN_867-foKc2pREv45Fw_QA8",
-            "y": "9yiymlzdxKCiRbYq7p-ArRB-C1ytjHE-eb7RDTi6rVc"
-          }
-        }
-      ],
-      "assertionMethod": [
-        "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS#zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS"
-      ],
-      "authentication": [
-        "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS#zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS"
-      ],
-      "capabilityInvocation": [
-        "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS#zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS"
-      ],
-      "capabilityDelegation": [
-        "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS#zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS"
-      ],
-      "keyAgreement": [
-        "did:key:zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS#zQ3shjmnWpSDEbYKpaFm4kTs9kXyqG6N2QwCYHNPP4yubqgJS"
-      ]
-    }
-  }
-}
--- a/did/testvectors/vectors.go
+++ b/did/testvectors/vectors.go
@@ -1,163 +0,0 @@
-//go:build jwx_es256k
-
-package testvectors
-
-import (
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/elliptic"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/json"
-	"errors"
-
-	"github.com/decred/dcrd/dcrec/secp256k1/v4"
-	"github.com/lestrrat-go/jwx/v2/jwk"
-	"github.com/libp2p/go-libp2p/core/crypto"
-	"github.com/mr-tron/base58"
-)
-
-type Vectors map[string]Vector
-
-// This is pretty gross but the structure allows the repeated Verifier,
-// PublicKeyJwk and PublicKeyBase58 account for the fact that the test
-// files are very inconsistent.
-type Vector struct {
-	VerificationKeyPair Verifier
-	VerificationMethod  Verifier
-	PublicKeyJwk        json.RawMessage
-	DidDocument         json.RawMessage // TODO: if we start producing DID documents, we should test this too
-}
-
-type Verifier struct {
-	ID              string
-	Type            string
-	PublicKeyBase58 string
-	PublicKeyJwk    json.RawMessage
-}
-
-func (v Vector) PubKey() (crypto.PubKey, error) {
-	// If the public key is in base58
-	if pubB58 := v.PubKeyBase58(); len(pubB58) > 0 {
-		pubBytes, err := base58.Decode(pubB58)
-		if err != nil {
-			return nil, err
-		}
-
-		t, err := v.PubKeyType()
-		if err != nil {
-			return nil, err
-		}
-
-		var unmarshaler crypto.PubKeyUnmarshaller
-
-		switch t {
-		case "Ed25519VerificationKey2018":
-			unmarshaler = crypto.UnmarshalEd25519PublicKey
-		case "EcdsaSecp256k1VerificationKey2019":
-			unmarshaler = crypto.UnmarshalSecp256k1PublicKey
-		// This is weak as it assumes the P256 curve - that's all the vectors contain (for now)
-		case "P256Key2021":
-			unmarshaler = compressedEcdsaPublicKeyUnmarshaler
-		default:
-			return nil, errors.New("failed to resolve unmarshaler")
-		}
-
-		return unmarshaler(pubBytes)
-	}
-
-	// If the public key is in a JWK
-	if pubJwk := v.PubKeyJwk(); len(pubJwk) > 0 {
-		key, err := jwk.ParseKey(pubJwk)
-		if err != nil {
-			return nil, err
-		}
-
-		var a any
-
-		if err := key.Raw(&a); err != nil {
-			return nil, err
-		}
-
-		switch a.(type) {
-		case *ecdsa.PublicKey:
-			epub := a.(*ecdsa.PublicKey)
-
-			if epub.Curve == secp256k1.S256() {
-				bytes := append([]byte{0x04}, append(epub.X.Bytes(), epub.Y.Bytes()...)...)
-
-				return crypto.UnmarshalSecp256k1PublicKey(bytes)
-			}
-
-			asn1, err := x509.MarshalPKIXPublicKey(epub)
-			if err != nil {
-				return nil, err
-			}
-
-			return crypto.UnmarshalECDSAPublicKey(asn1)
-		case ed25519.PublicKey:
-			return crypto.UnmarshalEd25519PublicKey(a.(ed25519.PublicKey))
-		case *rsa.PublicKey:
-			asn1, err := x509.MarshalPKIXPublicKey(a.(*rsa.PublicKey))
-			if err != nil {
-				return nil, err
-			}
-
-			return crypto.UnmarshalRsaPublicKey(asn1)
-		default:
-			return nil, errors.New("unsupported key type")
-		}
-	}
-
-	// If we don't find a public key at all
-	return nil, errors.New("vector's public key not found")
-}
-
-func (v Vector) PubKeyBase58() string {
-	if len(v.VerificationKeyPair.PublicKeyBase58) > 0 {
-		return v.VerificationKeyPair.PublicKeyBase58
-	}
-
-	return v.VerificationMethod.PublicKeyBase58
-}
-
-func (v Vector) PubKeyJwk() json.RawMessage {
-	if len(v.VerificationKeyPair.PublicKeyJwk) > 0 {
-		return v.VerificationKeyPair.PublicKeyJwk
-	}
-
-	if len(v.VerificationMethod.PublicKeyJwk) > 0 {
-		return v.VerificationMethod.PublicKeyJwk
-	}
-
-	return v.PublicKeyJwk
-}
-
-func (v Vector) PubKeyType() (string, error) {
-	if len(v.VerificationKeyPair.Type) > 0 {
-		return v.VerificationKeyPair.Type, nil
-	}
-
-	if len(v.VerificationMethod.Type) > 0 {
-		return v.VerificationMethod.Type, nil
-	}
-
-	return "", errors.New("vector's type not found")
-}
-
-func compressedEcdsaPublicKeyUnmarshaler(data []byte) (crypto.PubKey, error) {
-	x, y := elliptic.UnmarshalCompressed(elliptic.P256(), data)
-
-	ecdsaPublicKey := ecdsa.PublicKey{
-		Curve: elliptic.P256(),
-		X:     x,
-		Y:     y,
-	}
-
-	asn1, err := x509.MarshalPKIXPublicKey(&ecdsaPublicKey)
-	if err != nil {
-		return nil, err
-	}
-
-	return crypto.UnmarshalECDSAPublicKey(asn1)
-}
--- a/did/testvectors/x25519.json
+++ b/did/testvectors/x25519.json
@@ -1,80 +0,0 @@
-{
-  "didDocument": {
-    "did:key:z6LSeu9HkTHSfLLeUs2nnzUSNedgDUevfNQgQjQC23ZCit6F": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/x25519-2019/v1"
-      ],
-      "id": "did:key:z6LSeu9HkTHSfLLeUs2nnzUSNedgDUevfNQgQjQC23ZCit6F",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6LSeu9HkTHSfLLeUs2nnzUSNedgDUevfNQgQjQC23ZCit6F#z6LSeu9HkTHSfLLeUs2nnzUSNedgDUevfNQgQjQC23ZCit6F",
-          "type": "X25519KeyAgreementKey2019",
-          "controller": "did:key:z6LSeu9HkTHSfLLeUs2nnzUSNedgDUevfNQgQjQC23ZCit6F",
-          "publicKeyBase58": "4Dy8E9UaZscuPUf2GLxV44RCNL7oxmEXXkgWXaug1WKV"
-        }
-      ],
-      "keyAgreement": [
-        "did:key:z6LSeu9HkTHSfLLeUs2nnzUSNedgDUevfNQgQjQC23ZCit6F#z6LSeu9HkTHSfLLeUs2nnzUSNedgDUevfNQgQjQC23ZCit6F"
-      ]
-    },
-    "did:key:z6LStiZsmxiK4odS4Sb6JmdRFuJ6e1SYP157gtiCyJKfrYha": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/x25519-2019/v1"
-      ],
-      "id": "did:key:z6LStiZsmxiK4odS4Sb6JmdRFuJ6e1SYP157gtiCyJKfrYha",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6LStiZsmxiK4odS4Sb6JmdRFuJ6e1SYP157gtiCyJKfrYha#z6LStiZsmxiK4odS4Sb6JmdRFuJ6e1SYP157gtiCyJKfrYha",
-          "type": "X25519KeyAgreementKey2019",
-          "controller": "did:key:z6LStiZsmxiK4odS4Sb6JmdRFuJ6e1SYP157gtiCyJKfrYha",
-          "publicKeyBase58": "J3PiFeuSyLugy4DKn87TwK5cnruRgPtxouzXUqg99Avp"
-        }
-      ],
-      "keyAgreement": [
-        "did:key:z6LStiZsmxiK4odS4Sb6JmdRFuJ6e1SYP157gtiCyJKfrYha#z6LStiZsmxiK4odS4Sb6JmdRFuJ6e1SYP157gtiCyJKfrYha"
-      ]
-    },
-    "did:key:z6LSoMdmJz2Djah2P4L9taDmtqeJ6wwd2HhKZvNToBmvaczQ": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/x25519-2019/v1"
-      ],
-      "id": "did:key:z6LSoMdmJz2Djah2P4L9taDmtqeJ6wwd2HhKZvNToBmvaczQ",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6LSoMdmJz2Djah2P4L9taDmtqeJ6wwd2HhKZvNToBmvaczQ#z6LSoMdmJz2Djah2P4L9taDmtqeJ6wwd2HhKZvNToBmvaczQ",
-          "type": "X25519KeyAgreementKey2019",
-          "controller": "did:key:z6LSoMdmJz2Djah2P4L9taDmtqeJ6wwd2HhKZvNToBmvaczQ",
-          "publicKeyBase58": "CgTbngDMe7yHHfxPMvhpaFRpFoQWKgXAgwenJj8PsFDe"
-        }
-      ],
-      "keyAgreement": [
-        "did:key:z6LSoMdmJz2Djah2P4L9taDmtqeJ6wwd2HhKZvNToBmvaczQ#z6LSoMdmJz2Djah2P4L9taDmtqeJ6wwd2HhKZvNToBmvaczQ"
-      ]
-    },
-    "did:key:z6LSrzxMVydCourtpA6JLEYupT7ZUQ34hLfQZfRN5H47zLdz": {
-      "@context": [
-        "https://www.w3.org/ns/did/v1",
-        "https://w3id.org/security/suites/jws-2020/v1"
-      ],
-      "id": "did:key:z6LSrzxMVydCourtpA6JLEYupT7ZUQ34hLfQZfRN5H47zLdz",
-      "verificationMethod": [
-        {
-          "id": "did:key:z6LSrzxMVydCourtpA6JLEYupT7ZUQ34hLfQZfRN5H47zLdz#z6LSrzxMVydCourtpA6JLEYupT7ZUQ34hLfQZfRN5H47zLdz",
-          "type": "JsonWebKey2020",
-          "controller": "did:key:z6LSrzxMVydCourtpA6JLEYupT7ZUQ34hLfQZfRN5H47zLdz",
-          "publicKeyJwk": {
-            "kty": "OKP",
-            "crv": "X25519",
-            "x": "467ap28wHJGEXJAb4mLrokqq8A-txA_KmoQTcj31XzU"
-          }
-        }
-      ],
-      "keyAgreement": [
-        "did:key:z6LSrzxMVydCourtpA6JLEYupT7ZUQ34hLfQZfRN5H47zLdz#z6LSrzxMVydCourtpA6JLEYupT7ZUQ34hLfQZfRN5H47zLdz"
-      ]
-    }
-  }
-}
--- a/go.mod
+++ b/go.mod
@@ -1,42 +1,35 @@
 module github.com/ucan-wg/go-ucan

-go 1.23
+go 1.24.4
+
+toolchain go1.24.5

 require (
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0
-	github.com/ipfs/go-cid v0.4.1
+	github.com/MetaMask/go-did-it v1.0.0-pre1
+	github.com/avast/retry-go/v4 v4.6.1
+	github.com/ipfs/go-cid v0.5.0
 	github.com/ipld/go-ipld-prime v0.21.0
-	github.com/lestrrat-go/jwx/v2 v2.1.1
-	github.com/libp2p/go-libp2p v0.36.3
-	github.com/mr-tron/base58 v1.2.0
 	github.com/multiformats/go-multibase v0.2.0
 	github.com/multiformats/go-multicodec v0.9.0
 	github.com/multiformats/go-multihash v0.2.3
 	github.com/multiformats/go-varint v0.0.7
 	github.com/stretchr/testify v1.10.0
-	golang.org/x/crypto v0.32.0
-	gotest.tools/v3 v3.5.1
+	github.com/ucan-wg/go-varsig v1.0.0
+	golang.org/x/crypto v0.40.0
 )

 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/goccy/go-json v0.10.3 // indirect
-	github.com/google/go-cmp v0.5.9 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.8 // indirect
-	github.com/lestrrat-go/blackmagic v1.0.2 // indirect
-	github.com/lestrrat-go/httpcc v1.0.1 // indirect
-	github.com/lestrrat-go/httprc v1.0.6 // indirect
-	github.com/lestrrat-go/iter v1.0.2 // indirect
-	github.com/lestrrat-go/option v1.0.1 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.9 // indirect
 	github.com/minio/sha256-simd v1.0.1 // indirect
+	github.com/mr-tron/base58 v1.2.0 // indirect
 	github.com/multiformats/go-base32 v0.1.0 // indirect
 	github.com/multiformats/go-base36 v0.2.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/polydawn/refmt v0.89.0 // indirect
-	github.com/segmentio/asm v1.2.0 // indirect
 	github.com/spaolacci/murmur3 v1.1.0 // indirect
-	golang.org/x/sys v0.29.0 // indirect
-	google.golang.org/protobuf v1.34.2 // indirect
+	golang.org/x/sys v0.34.0 // indirect
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	lukechampine.com/blake3 v1.3.0 // indirect
--- a/go.sum
+++ b/go.sum
@@ -1,49 +1,34 @@
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/MetaMask/go-did-it v1.0.0-pre1 h1:NTGAC7z52TwFegEF7c+csUr/6Al1nAo6ValAAxOsjto=
+github.com/MetaMask/go-did-it v1.0.0-pre1/go.mod h1:7m9syDnXFTg5GmUEcydpO4Rs3eYT4McFH7vCw5fp3A4=
+github.com/avast/retry-go/v4 v4.6.1 h1:VkOLRubHdisGrHnTu89g08aQEWEgRU7LVEop3GbIcMk=
+github.com/avast/retry-go/v4 v4.6.1/go.mod h1:V6oF8njAwxJ5gRo1Q7Cxab24xs5NCWZBeaHHBklR8mA=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/decred/dcrd/crypto/blake256 v1.0.1 h1:7PltbUIQB7u/FfZ39+DGa/ShuMyJ5ilcvdfma9wOH6Y=
-github.com/decred/dcrd/crypto/blake256 v1.0.1/go.mod h1:2OfgNZ5wDpcsFmHmCK5gZTPcCXqlm2ArzUIkw9czNJo=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 h1:rpfIENRNNilwHwZeG5+P150SMrnNEcHYvcCuK6dPZSg=
-github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0/go.mod h1:v57UDF4pDQJcEfFUCRop3lJL149eHGSe9Jvczhzjo/0=
+github.com/decred/dcrd/crypto/blake256 v1.1.0 h1:zPMNGQCm0g4QTY27fOCorQW7EryeQ/U0x++OzVrdms8=
+github.com/decred/dcrd/crypto/blake256 v1.1.0/go.mod h1:2OfgNZ5wDpcsFmHmCK5gZTPcCXqlm2ArzUIkw9czNJo=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0 h1:NMZiJj8QnKe1LgsbDayM4UoHwbvwDRwnI3hwNaAHRnc=
+github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0/go.mod h1:ZXNYxsqcloTdSy/rNShjYzMhyjf0LaoftYK0p+A3h40=
 github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
 github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
 github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
-github.com/goccy/go-json v0.10.3 h1:KZ5WoDbxAIgm2HNbYckL0se1fHD6rz5j4ywS6ebzDqA=
-github.com/goccy/go-json v0.10.3/go.mod h1:oq7eo15ShAhp70Anwd5lgX2pLfOS3QCiwU/PULtXL6M=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
-github.com/ipfs/go-cid v0.4.1 h1:A/T3qGvxi4kpKWWcPC/PgbvDA2bjVLO7n4UeVwnbs/s=
-github.com/ipfs/go-cid v0.4.1/go.mod h1:uQHwDeX4c6CtyrFwdqyhpNcxVewur1M7l7fNU7LKwZk=
+github.com/ipfs/go-cid v0.5.0 h1:goEKKhaGm0ul11IHA7I6p1GmKz8kEYniqFopaB5Otwg=
+github.com/ipfs/go-cid v0.5.0/go.mod h1:0L7vmeNXpQpUS9vt+yEARkJ8rOg43DF3iPgn4GIN0mk=
 github.com/ipld/go-ipld-prime v0.21.0 h1:n4JmcpOlPDIxBcY037SVfpd1G+Sj1nKZah0m6QH9C2E=
 github.com/ipld/go-ipld-prime v0.21.0/go.mod h1:3RLqy//ERg/y5oShXXdx5YIp50cFGOanyMctpPjsvxQ=
 github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
-github.com/klauspost/cpuid/v2 v2.2.8 h1:+StwCXwm9PdpiEkPyzBXIy+M9KUb4ODm0Zarf1kS5BM=
-github.com/klauspost/cpuid/v2 v2.2.8/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/klauspost/cpuid/v2 v2.2.9 h1:66ze0taIn2H33fBvCkXuv9BmCwDfafmiIVpKV9kKGuY=
+github.com/klauspost/cpuid/v2 v2.2.9/go.mod h1:rqkxqrZ1EhYM9G+hXH7YdowN5R5RGN6NK4QwQ3WMXF8=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/lestrrat-go/blackmagic v1.0.2 h1:Cg2gVSc9h7sz9NOByczrbUvLopQmXrfFx//N+AkAr5k=
-github.com/lestrrat-go/blackmagic v1.0.2/go.mod h1:UrEqBzIR2U6CnzVyUtfM6oZNMt/7O7Vohk2J0OGSAtU=
-github.com/lestrrat-go/httpcc v1.0.1 h1:ydWCStUeJLkpYyjLDHihupbn2tYmZ7m22BGkcvZZrIE=
-github.com/lestrrat-go/httpcc v1.0.1/go.mod h1:qiltp3Mt56+55GPVCbTdM9MlqhvzyuL6W/NMDA8vA5E=
-github.com/lestrrat-go/httprc v1.0.6 h1:qgmgIRhpvBqexMJjA/PmwSvhNk679oqD1RbovdCGW8k=
-github.com/lestrrat-go/httprc v1.0.6/go.mod h1:mwwz3JMTPBjHUkkDv/IGJ39aALInZLrhBp0X7KGUZlo=
-github.com/lestrrat-go/iter v1.0.2 h1:gMXo1q4c2pHmC3dn8LzRhJfP1ceCbgSiT9lUydIzltI=
-github.com/lestrrat-go/iter v1.0.2/go.mod h1:Momfcq3AnRlRjI5b5O8/G5/BvpzrhoFTZcn06fEOPt4=
-github.com/lestrrat-go/jwx/v2 v2.1.1 h1:Y2ltVl8J6izLYFs54BVcpXLv5msSW4o8eXwnzZLI32E=
-github.com/lestrrat-go/jwx/v2 v2.1.1/go.mod h1:4LvZg7oxu6Q5VJwn7Mk/UwooNRnTHUpXBj2C4j3HNx0=
-github.com/lestrrat-go/option v1.0.1 h1:oAzP2fvZGQKWkvHa1/SAcFolBEca1oN+mQ7eooNBEYU=
-github.com/lestrrat-go/option v1.0.1/go.mod h1:5ZHFbivi4xwXxhxY9XHDe2FHo6/Z7WWmtT7T5nBBp3I=
-github.com/libp2p/go-buffer-pool v0.1.0 h1:oK4mSFcQz7cTQIfqbe4MIj9gLW+mnanjyFtc6cdF0Y8=
-github.com/libp2p/go-buffer-pool v0.1.0/go.mod h1:N+vh8gMqimBzdKkSMVuydVDq+UV5QTWy5HSiZacSbPg=
-github.com/libp2p/go-libp2p v0.36.3 h1:NHz30+G7D8Y8YmznrVZZla0ofVANrvBl2c+oARfMeDQ=
-github.com/libp2p/go-libp2p v0.36.3/go.mod h1:4Y5vFyCUiJuluEPmpnKYf6WFx5ViKPUYs/ixe9ANFZ8=
 github.com/minio/sha256-simd v1.0.1 h1:6kaan5IFmwTNynnKKpDHe6FWHohJOHhCPchzK49dzMM=
 github.com/minio/sha256-simd v1.0.1/go.mod h1:Pz6AKMiUdngCLpeTL/RJY1M9rUuPMYujV5xJjtbRSN8=
 github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o=
@@ -52,8 +37,6 @@ github.com/multiformats/go-base32 v0.1.0 h1:pVx9xoSPqEIQG8o+UbAe7DNi51oej1NtK+aG
 github.com/multiformats/go-base32 v0.1.0/go.mod h1:Kj3tFY6zNr+ABYMqeUNeGvkIC/UYgtWibDcT0rExnbI=
 github.com/multiformats/go-base36 v0.2.0 h1:lFsAbNOGeKtuKozrtBsAkSVhv1p9D0/qedU9rQyccr0=
 github.com/multiformats/go-base36 v0.2.0/go.mod h1:qvnKE++v+2MWCfePClUEjE78Z7P2a1UV0xHgWc0hkp4=
-github.com/multiformats/go-multiaddr v0.13.0 h1:BCBzs61E3AGHcYYTv8dqRH43ZfyrqM8RXVPT8t13tLQ=
-github.com/multiformats/go-multiaddr v0.13.0/go.mod h1:sBXrNzucqkFJhvKOiwwLyqamGa/P5EIXNPLovyhQCII=
 github.com/multiformats/go-multibase v0.2.0 h1:isdYCVLvksgWlMW9OZRYJEa9pZETFivncJHmHnnd87g=
 github.com/multiformats/go-multibase v0.2.0/go.mod h1:bFBZX4lKCA/2lyOFSAoKH5SS6oPyjtnzK/XTFDPkNuk=
 github.com/multiformats/go-multicodec v0.9.0 h1:pb/dlPnzee/Sxv/j4PmkDRxCOi3hXTz3IbPKOXWJkmg=
@@ -69,8 +52,6 @@ github.com/polydawn/refmt v0.89.0/go.mod h1:/zvteZs/GwLtCgZ4BL6CBsk9IKIlexP43ObX
 github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/segmentio/asm v1.2.0 h1:9BQrFxC+YOHJlTlHGkTrFWf59nbL3XnCoFLTwDCI7ys=
-github.com/segmentio/asm v1.2.0/go.mod h1:BqMnlJP91P8d+4ibuonYZw9mfnzI9HfxselHZr5aAcs=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/smartystreets/assertions v1.2.0 h1:42S6lae5dvLc7BrLu/0ugRtcFVjoJNMC/N3yZFZkDFs=
 github.com/smartystreets/assertions v1.2.0/go.mod h1:tcbTF8ujkAEcZ8TElKY+i30BzYlVhC/LOxJk7iOWnoo=
@@ -78,38 +59,29 @@ github.com/smartystreets/goconvey v1.7.2 h1:9RBaZCeXEQ3UselpuwUQHltGVXvdwm6cv1hg
 github.com/smartystreets/goconvey v1.7.2/go.mod h1:Vw0tHAZW6lzCRk3xgdin6fKYcG+G3Pg9vgXWeJpQFMM=
 github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
 github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/ucan-wg/go-varsig v1.0.0 h1:Hrc437Zg+B5Eoajg+qZQZI3Q3ocPyjlnp3/Bz9ZnlWw=
+github.com/ucan-wg/go-varsig v1.0.0/go.mod h1:Sakln6IPooDPH+ClQ0VvR09TuwUhHcfLqcPiPkMZGh0=
 github.com/urfave/cli v1.22.10/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 github.com/warpfork/go-wish v0.0.0-20220906213052-39a1cc7a02d0 h1:GDDkbFiaK8jsSDJfjId/PEGEShv6ugrt4kYsC5UIDaQ=
 github.com/warpfork/go-wish v0.0.0-20220906213052-39a1cc7a02d0/go.mod h1:x6AKhvSSexNrVSrViXSHUEbICjmGXhtgABaHIySUSGw=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.32.0 h1:euUpcYgM8WcP71gNpTqQCn6rC2t6ULUPiOzfWaXVVfc=
-golang.org/x/crypto v0.32.0/go.mod h1:ZnnJkOaASj8g0AjIduWNlq2NRxL0PlBrbKVyZ6V/Ugc=
-golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56 h1:2dVuKD2vS7b0QIHQbpyTISPd0LeHDbnYEryqj5Q1ug8=
-golang.org/x/exp v0.0.0-20240719175910-8a7402abbf56/go.mod h1:M4RDyNAINzryxdtnbRXRL/OHtkFuWGRjvuhBJpk2IlY=
+golang.org/x/crypto v0.40.0 h1:r4x+VvoG5Fm+eJcxMaY8CQM7Lb0l1lsmjGBQ6s8BfKM=
+golang.org/x/crypto v0.40.0/go.mod h1:Qr1vMER5WyS2dfPHAlsOj01wgLbsyWtFn/aY+5+ZdxY=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
-golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.34.0 h1:H5Y5sJ2L2JRdyv7ROF1he/lPdvFsd0mJHFw2ThKHxLA=
+golang.org/x/sys v0.34.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
-google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gotest.tools/v3 v3.5.1 h1:EENdUnS3pdur5nybKYIh2Vfgc8IUNBjxDPSjtiJcOzU=
-gotest.tools/v3 v3.5.1/go.mod h1:isy3WKz7GK6uNw/sbHzfKBLvlvXwUyV06n6brMxxopU=
 lukechampine.com/blake3 v1.3.0 h1:sJ3XhFINmHSrYCgl958hscfIa3bw8x4DqMP3u1YvoYE=
 lukechampine.com/blake3 v1.3.0/go.mod h1:0OFRp7fBtAylGVCO40o87sbupkyIGgbpv1+M1k1LM6k=
--- a/pkg/args/builder_test.go
+++ b/pkg/args/builder_test.go
@@ -6,6 +6,7 @@ import (
 	"github.com/ipld/go-ipld-prime"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+
 	"github.com/ucan-wg/go-ucan/pkg/args"
 )

--- a/pkg/container/Readme.md
+++ b/pkg/container/Readme.md
@@ -1,5 +1,7 @@
 # Token container

+The specification has been promoted to https://github.com/ucan-wg/container.
+
 ## Why do I need that?

 Some common situation asks to package multiple tokens together:
--- a/pkg/container/SPEC.md
+++ b/pkg/container/SPEC.md
@@ -1,109 +0,0 @@
-# UCAN container Specification v0.1.0
-
-## Editors
-
-* [Michael Muré], [Consensys]
-
-## Authors
-
-* [Michael Muré], [Consensys]
-* [Hugo Dias]
-
-## Language
-
-The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in [BCP 14] when, and only when, they appear in all capitals, as shown here.
-
-# 0 Abstract
-
-[User-Controlled Authorization Network (UCAN)][UCAN] is a trustless, secure, local-first, user-originated authorization and revocation scheme. This document describes a container format for transmitting one or more UCAN tokens as bytes, regardless of the transport.
-
-# 1 Introduction
-
-The UCAN spec itself is transport agnostic. This specification describes how to transfer one or more [UCAN] tokens bundled together, regardless of the transport.
-
-# 2 Container format
-
-## 2.1 Inner structure
-
-UCAN tokens, regardless of their kind ([Delegation], [Invocation], [Revocation], [Promise]) MUST be first signed and serialized into DAG-CBOR bytes according to their respective specification. As the token's CID is not part of the serialized container, any CID returned by this operation is to be ignored.
-
-All the tokens' bytes MUST be assembled in a [CBOR] array. The ordering of tokens in the array MUST NOT matter. This array SHOULD NOT have duplicate entries.
-
-That array is then inserted as the value under the `ctn-v1` string key, in a CBOR map. There MUST NOT be other keys.
-
-For clarity, the CBOR shape is given below:
-
-```json
-{
-  "ctn-v1": [
-    <token1 bytes>,
-    <token2 bytes>,
-    <token3 bytes>,
-  ]
-}
-```
-
-## 2.2 Serialisation
-
-To serialize the container into bytes, the inner CBOR structure MUST then be serialized into bytes according to the CBOR specification. The resulting bytes MAY be compressed by a supported algorithm, then MAY be encoded with a supported base encoding.
-
-The following compression algorithms are REQUIRED to be supported:
- [GZIP]
-
-The following base encoding combinations are REQUIRED to be supported:
- base64, standard alphabet, padding
- base64, URL alphabet, no padding
-
-The CBOR bytes MUST be prepended by a single byte header to indicate the selection combination of base encoding and compression. This header value MUST be set according to the following table:
-
-| Header as hex | Header as ASCII | Base encoding           | Compression    |
-|---------------|-----------------|-------------------------|----------------|
-| 0x40          | @               | raw bytes               | no compression | 
-| 0x42          | B               | base64 std padding      | no compression | 
-| 0x43          | C               | base64 url (no padding) | no compression | 
-| 0x4D          | M               | raw bytes               | gzip           | 
-| 0x4F          | O               | base64 std padding      | gzip           | 
-| 0x50          | P               | base64 url (no padding) | gzip           | 
-
-For clarity, the resulting serialisation is in the form of `<header byte><cbor bytes, optionally compressed, optionally encoded>`.
-
-# 3 FAQ
-
-## 3.1 Why not include the UCAN CIDs?
-
-Several attacks are possible if UCAN tokens aren't validated. If CIDs aren't validated, at least two attacks are possible: [privilege escalation] and [cache poisoning], as UCAN delegation proofs depends on a correct hash-linked structure.
-
-By not including the CID in the container, the recipient is forced to hash (and thus validate) the CIDs for each token. If presented with a claimed CID paired with the token bytes, implementers could ignore CID validation, breaking a core part of the proof chain security model. Hash functions are very fast on a couple kilobytes of data so the overhead is still very low. It also significantly reduces the size of the container.
-
-## 3.2 Why compress? Why not always compress?
-
-Compression is a relatively demanding operation. As such, using it is a tradeoff between size on the wire and CPU/memory usage, both when writing and reading a container. The transport itself can make compression worthwhile or not: for example, HTTP/2 and HTTP/3 headers are already compressed, but HTTP/1 headers are not. This being highly contextual, the choice is left to the final implementer.
-
-# 4 Implementation recommendations
-
-## 4.1 Dissociate reader and writer
-
-While it is tempting to write a single implementation to read and write a container, it is RECOMMENDED to separate the implementation into a reader and a writer. The writer can simply accept arbitrary tokens as bytes, while the reader provides a read-only view with convenient access functions.
-
-# 5 Acknowledgments
-
-Many thanks to all the [Fission] team and in particular to [Brooklyn Zelenka] for creating and pushing [UCAN] and other critical pieces like [WNFS], and generally being awesome and supportive people.
-
-<!-- External Links -->
-
-[BCP 14]: https://www.rfc-editor.org/info/bcp14
-[Brooklyn Zelenka]: https://github.com/expede
-[CBOR]: https://www.rfc-editor.org/rfc/rfc8949.html
-[Consensys]: https://consensys.io/
-[Delegation]: https://github.com/ucan-wg/delegation/tree/v1_ipld
-[Fission]: https://fission.codes
-[GZIP]: https://datatracker.ietf.org/doc/html/rfc1952
-[Hugo Dias]: https://github.com/hugomrdias
-[Invocation]: https://github.com/ucan-wg/invocation
-[Michael Muré]: https://github.com/MichaelMure/
-[Promise]: https://github.com/ucan-wg/promise/tree/v1-rc1
-[Revocation]: https://github.com/ucan-wg/revocation/tree/first-draft
-[UCAN]: https://github.com/ucan-wg/spec
-[WNFS]: https://github.com/wnfs-wg
-[cache poisoning]: https://en.wikipedia.org/wiki/Cache_poisoning
-[privilede escalation]: https://en.wikipedia.org/wiki/Privilege_escalation
--- a/pkg/container/containertest/Base64StdPadding
+++ b/pkg/container/containertest/Base64StdPadding
--- a/pkg/container/containertest/Base64StdPaddingGzipped
+++ b/pkg/container/containertest/Base64StdPaddingGzipped
@@ -0,0 +1 @@
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
--- a/pkg/container/containertest/Base64URL
+++ b/pkg/container/containertest/Base64URL
--- a/pkg/container/containertest/Base64URLGzipped
+++ b/pkg/container/containertest/Base64URLGzipped
@@ -0,0 +1 @@
+PH4sIAAAAAAAA_5zW65MU1f3HcS7-hB8igpfIgqUxCqLC0tfTfUADMzs7M87ObubaOzMEsM-lp6eb6Zmee49GvEKwVBQRgygIUVHLCwoqoJAAikCQaJRICCqFGPCCcXVFoaBMJbukKs929h94P3nV-ZzvSg2XrEkV9u7kwFW3J6bv7bj7tflfrjm4e8_grc7Dke4jPx6c_Mm87olH_O9Of35_59-X7z2xe056dKx7156F074aOXzCcemCRe-Y4T3n3v7SNV-fdd4qVfcLA48NPDbwArtYxqo1mcxJT2ebmWZmUgE3s09jtUxqMsmQKSZ1ptRBu5lF0WK75ZbawpVO25NW2rLtfgG5XFZKtlwBr1GPVfyKU9YjZS_BOEv0yVouNxmpBUxr-TH6osmv4Uyx-L9NM5PUWqLtmqTohbQnkWp1i5JlxiOWLxAFAdaJeU13Z0gwWsN2AOdzc267A6tz5uDmGTPvUH-pNVfUOWU6CBfLqP9ZkqUl9fc6w3KqRmTVUDWGB1BiiKoDCBhJptRABAuCxrJY0zHPQBZjbLCY8hKCVBOplbMwDXbdsO9O4ZT5m20fTPywBymh3HfTBjDl5MzlT65xpm15kC4-f_2hlTtKyQUbrj78wBPfjn1e3T9i7OmuEfmt25d4z_q2K_0H36lRiw_9NbK0Szy0d3A_kPKuFk6qOYqVTSCj2uGNknxdT0BN0Etlqklxr8QaSqzF468oQl-R0oo7rztKQaK5crqzmMq7vOV4uh4jFZ2zPIrfFL0hS_ZYOFikDSA1ku1FAqJEZIRUA2gMy0OeY4EOKGVlHmCDIgZKKhYhp2NKGQR5YvBYZAWVp4j0Io1b4N905xU_e_SJj1-4pAfpbefa207fnMit_9XP39xxw7D3Fk0bH7vs09W_3uwcG3Vk5Nxv14yYP2Zj7lLPQ01Nnw0bsmXTssuZprL6-dX3zB3U9NH9q8_tB1KhgwUG8gA54HH5OcMyW1vqjmLnO11GNB0Ph6ut8WI1zAbdSMv2FclKhWK2riCS9trFvDvmd3tC0bpo8SAeC5QExZfiO3LeIOuKePkGkBrJnkEiWJYlnjEg1nhERSKouowIUgEvGUTGRBN5Ims6QiyVZVUwNIp4GUNOxr1I199x4OH_y6103Q-3DOhBuhYw1x1Y9eHYjejREfahp2Z9SNaqo83Xb0yff-mFr3_srFg7at3FV2aEy28atv2p8zbc-313YOQ3y65gm1Z9MHzdipHm0H4gFYmaLrQGWjpFLp4ICmagamWKHI560tlAsoa1uNcotoQKWj7fGuvz3Ck1v5hJgvZQJGYIKTlcFrypWocVLHPuEC_oWa2e0M3OVsen-BuZuwayZ-YOckQARDJ4TLAsChqUdVHVOBkA1pA5GVKGkaiqA04CDISiIcoUMhRjCHuRmjJraxO7f_ji-PiTE3pf0g83F4Zc-hF4-7uTV4XPG7xw986TC__2_qlnjrf9OLDrrKfeXioPGvtN0-NHRv8OHh7_5fzP1V3Lt40Zar-z-c3Vtx5O54b0AykTCrGsVS1iKmkdapQ1q6lqKWkV2gD1J3MIY09SlHw5O6yHgn1FqnoTLU66YobsbASoKq46rmoka2c8LomNkHBFYH2VVldNa-GTQgNIjWR7kTiVAIYRsYEFTcMCgpDqogw4TFXGwKqmYaACRtMJ4ClmEDAQFaHAYAbSXqRXxt9z8fIVxXOXjpjI9SDtXIkK6MJ3T6xbv-WuN7azi9K8UGl5a1t056x9G6fgxJJ5g03lSBk_O2juXV0Lnh2kVHfIwcqrKw-9dboId5X-eU5__iRPLhyxMsF03C9ZnWYKtRfZajIbUDjb68k7XFG2UL5adKesKOwrku42qkgrRaK2lI1jYJaMelnpaLf9RhW0sfmUrjk-FymaAcHBDSA1ku1FYjVeBBpGBqUCpjIUKdI5TuAwwqqhiQAAyvAQ6BoDBCgiwSCizMsSQhzfi_SP-2K_-PGE9saxTzMze5Dy-z0P7Di679olRys3fzdIXbZgbpvy0Krm5oXnnP_1w9yzj0yF8_64bCjzW2H22feEv48NLk6_8UD32fWPNvlf_CS18OUB_UDSE1WcaNUKSsqx_SjA-zNeLYI4T0cybfM4pbMg4AknnbbOetjqK1K-blcKUt4DWcNrVBzBIiJ2fGE7W8gCKZbI4WhBy4KkP9MWhA0gNZL9LxJLVMQhA_KEkTAjEkbnBZFILMQGQRLPi5gSpAOqEShqqoFFWZA4jCHoRRLeO9XcMqtwy7p35cd6kIY99snirRBtnvqcHN9benz4hCuG3LJt9bafZki7thTP_mHpi5PGXfbY6N1Nm68Z992tLD51S-q5DR98dsnhAbNSNzwZvOr_-4FUTdpy0XIjlg0nZSHkqaneUBVUCylgZEtmwQ3LhZrhR3WtkrX7PHegSpISVKtKuCYFyu11s5pK6FHbR112BNtsIZUOt1fSHVIuLzYydw1kz8ydoGqUF4nBizIHZYFyog5ZLHCU0QwEOZGROVEiusr824blDCgBSSIMgGdO8ClPP7KYPJnsQIeKG3uQrnz5teFvvD98hrrOc3nrmK3rn9s_-09PjBzaddOwxDl3Hz1xfEx810uPhvYcbL3sL9dNWjnuxamjXnCFEheAP29i5nXf3tGf6y7r6qwrJZfHlLyGLCvuWCf05Qp6JGDYBaNWqnvS5bKN_VRBVaWvSDnJBG4lHBEAl05yIccVIHZabmmLBttdobSjaKY3FRY9alvY42oAqZFsL5KKCAaEQkMlokgpyzKijhlRpaIoGZClCLCU1ahOIGQhFWSDQwLLqkhlzrwkvOH-ScEtSw68Omr87B6kpYWRa185WbvuC8u8aMC0i1pXbHeO72P9982fsHhh2xbf8WGe0y5Zq-wAk3YenZ05evG93MzVAx78aXJlxr1r2hce7A9Srqh6jIIVjNU7INENUg7Tqmz7tFBb2pfy-oq6zxuOOO0kWo27-3yC58tCwi900DxOtpk-k2txFCfuCGKllnOscqVk-W0N1dmoFcw3coI3kO1FElVWYhiiGhzgCS-xPES6zFKVAZxgyIAXJZWjAOsygppAEG_8Z-wIQZzai7Ri5eyp3V8981nL9fET_woAAP__svLMp3sQAAA
--- a/pkg/container/containertest/Bytes
+++ b/pkg/container/containertest/Bytes
--- a/pkg/container/containertest/BytesGzipped
+++ b/pkg/container/containertest/BytesGzipped
--- a/pkg/container/containertest/containertest.go
+++ b/pkg/container/containertest/containertest.go
@@ -0,0 +1,21 @@
+package containertest
+
+import _ "embed"
+
+//go:embed Base64StdPadding
+var Base64StdPadding string
+
+//go:embed Base64StdPaddingGzipped
+var Base64StdPaddingGzipped string
+
+//go:embed Base64URL
+var Base64URL string
+
+//go:embed Base64URLGzipped
+var Base64URLGzipped string
+
+//go:embed Bytes
+var Bytes []byte
+
+//go:embed BytesGzipped
+var BytesGzipped []byte
--- a/pkg/container/reader.go
+++ b/pkg/container/reader.go
@@ -21,7 +21,12 @@ var ErrNotFound = fmt.Errorf("not found")
 var ErrMultipleInvocations = fmt.Errorf("multiple invocations")

 // Reader is a token container reader. It exposes the tokens conveniently decoded.
-type Reader map[cid.Cid]token.Token
+type Reader map[cid.Cid]bundle
+
+type bundle struct {
+	sealed []byte
+	token  token.Token
+}

 // FromBytes decodes a container from a []byte
 func FromBytes(data []byte) (Reader, error) {
@@ -92,11 +97,36 @@ func FromReader(r io.Reader) (Reader, error) {
 // GetToken returns an arbitrary decoded token, from its CID.
 // If not found, ErrNotFound is returned.
 func (ctn Reader) GetToken(cid cid.Cid) (token.Token, error) {
-	tkn, ok := ctn[cid]
+	bndl, ok := ctn[cid]
 	if !ok {
 		return nil, ErrNotFound
 	}
-	return tkn, nil
+	return bndl.token, nil
+}
+
+// GetSealed returns an arbitrary sealed token, from its CID.
+// If not found, ErrNotFound is returned.
+func (ctn Reader) GetSealed(cid cid.Cid) ([]byte, error) {
+	bndl, ok := ctn[cid]
+	if !ok {
+		return nil, ErrNotFound
+	}
+	return bndl.sealed, nil
+}
+
+// GetAllTokens return all the tokens in the container.
+func (ctn Reader) GetAllTokens() iter.Seq[token.Bundle] {
+	return func(yield func(token.Bundle) bool) {
+		for c, bndl := range ctn {
+			if !yield(token.Bundle{
+				Cid:     c,
+				Decoded: bndl.token,
+				Sealed:  bndl.sealed,
+			}) {
+				return
+			}
+		}
+	}
 }

 // GetDelegation is the same as GetToken but only return a delegation.Token, with the right type.
@@ -112,12 +142,33 @@ func (ctn Reader) GetDelegation(cid cid.Cid) (*delegation.Token, error) {
 	return nil, delegation.ErrDelegationNotFound
 }

+// GetDelegationBundle is the same as GetToken but only return a delegation.Bundle, with the right type.
+// If not found, delegation.ErrDelegationNotFound is returned.
+func (ctn Reader) GetDelegationBundle(cid cid.Cid) (*delegation.Bundle, error) {
+	bndl, ok := ctn[cid]
+	if !ok {
+		return nil, delegation.ErrDelegationNotFound
+	}
+	if tkn, ok := bndl.token.(*delegation.Token); ok {
+		return &delegation.Bundle{
+			Cid:     cid,
+			Decoded: tkn,
+			Sealed:  bndl.sealed,
+		}, nil
+	}
+	return nil, delegation.ErrDelegationNotFound
+}
+
 // GetAllDelegations returns all the delegation.Token in the container.
-func (ctn Reader) GetAllDelegations() iter.Seq2[cid.Cid, *delegation.Token] {
-	return func(yield func(cid.Cid, *delegation.Token) bool) {
-		for c, t := range ctn {
-			if t, ok := t.(*delegation.Token); ok {
-				if !yield(c, t) {
+func (ctn Reader) GetAllDelegations() iter.Seq[*delegation.Bundle] {
+	return func(yield func(*delegation.Bundle) bool) {
+		for c, bndl := range ctn {
+			if t, ok := bndl.token.(*delegation.Token); ok {
+				if !yield(&delegation.Bundle{
+					Cid:     c,
+					Decoded: t,
+					Sealed:  bndl.sealed,
+				}) {
 					return
 				}
 			}
@@ -130,8 +181,8 @@ func (ctn Reader) GetAllDelegations() iter.Seq2[cid.Cid, *delegation.Token] {
 // If more than one invocation exists, ErrMultipleInvocations is returned.
 func (ctn Reader) GetInvocation() (*invocation.Token, error) {
 	var res *invocation.Token
-	for _, t := range ctn {
-		if inv, ok := t.(*invocation.Token); ok {
+	for _, bndl := range ctn {
+		if inv, ok := bndl.token.(*invocation.Token); ok {
 			if res != nil {
 				return nil, ErrMultipleInvocations
 			}
@@ -145,11 +196,15 @@ func (ctn Reader) GetInvocation() (*invocation.Token, error) {
 }

 // GetAllInvocations returns all the invocation.Token in the container.
-func (ctn Reader) GetAllInvocations() iter.Seq2[cid.Cid, *invocation.Token] {
-	return func(yield func(cid.Cid, *invocation.Token) bool) {
-		for c, t := range ctn {
-			if t, ok := t.(*invocation.Token); ok {
-				if !yield(c, t) {
+func (ctn Reader) GetAllInvocations() iter.Seq[invocation.Bundle] {
+	return func(yield func(invocation.Bundle) bool) {
+		for c, bndl := range ctn {
+			if t, ok := bndl.token.(*invocation.Token); ok {
+				if !yield(invocation.Bundle{
+					Cid:     c,
+					Decoded: t,
+					Sealed:  bndl.sealed,
+				}) {
 					return
 				}
 			}
@@ -162,6 +217,19 @@ func (ctn Reader) addToken(data []byte) error {
 	if err != nil {
 		return err
 	}
-	ctn[c] = tkn
+	ctn[c] = bundle{
+		sealed: data,
+		token:  tkn,
+	}
 	return nil
 }
+
+// ToWriter convert a container Reader into a Writer.
+// Most likely, you only want to use this in tests for convenience.
+func (ctn Reader) ToWriter() Writer {
+	writer := NewWriter()
+	for _, bndl := range ctn {
+		writer.AddSealed(bndl.sealed)
+	}
+	return writer
+}
--- a/pkg/container/serial_test.go
+++ b/pkg/container/serial_test.go
@@ -9,11 +9,12 @@ import (
 	"testing"
 	"time"

+	"github.com/MetaMask/go-did-it"
+	"github.com/MetaMask/go-did-it/controller/did-key"
+	"github.com/MetaMask/go-did-it/crypto/ed25519"
 	"github.com/ipfs/go-cid"
-	"github.com/libp2p/go-libp2p/core/crypto"
 	"github.com/stretchr/testify/require"

-	"github.com/ucan-wg/go-ucan/did"
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/pkg/policy"
 	"github.com/ucan-wg/go-ucan/pkg/policy/literal"
@@ -36,7 +37,7 @@ func TestContainerRoundTrip(t *testing.T) {
 		{"Base64StdPaddingGzippedWriter", headerBase64StdPaddingGzip, Writer.ToBase64StdPaddingGzippedWriter},
 		{"Base64URL", headerBase64URL, Writer.ToBase64URL},
 		{"Base64URLWriter", headerBase64URL, Writer.ToBase64URLWriter},
-		{"Base64URLGzip", headerBase64URLGzip, Writer.ToBase64URLGzip},
+		{"Base64URLGzipped", headerBase64URLGzip, Writer.ToBase64URLGzipped},
 		{"Base64URLGzipWriter", headerBase64URLGzip, Writer.ToBase64URLGzipWriter},
 	} {
 		t.Run(tc.name, func(t *testing.T) {
@@ -172,15 +173,12 @@ func BenchmarkContainerSerialisation(b *testing.B) {
 	}
 }

-func randDID() (crypto.PrivKey, did.DID) {
-	privKey, _, err := crypto.GenerateEd25519Key(rand.Reader)
-	if err != nil {
-		panic(err)
-	}
-	d, err := did.FromPrivKey(privKey)
+func randDID() (ed25519.PrivateKey, did.DID) {
+	_, privKey, err := ed25519.GenerateKeyPair()
 	if err != nil {
 		panic(err)
 	}
+	d := didkeyctl.FromPrivateKey(privKey)
 	return privKey, d
 }

--- a/pkg/container/testvectors/Base64StdPadding
+++ b/pkg/container/testvectors/Base64StdPadding
--- a/pkg/container/testvectors/Base64StdPaddingGzipped
+++ b/pkg/container/testvectors/Base64StdPaddingGzipped
@@ -1 +0,0 @@
-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
--- a/pkg/container/testvectors/Base64URL
+++ b/pkg/container/testvectors/Base64URL
--- a/pkg/container/testvectors/Base64URLGzip
+++ b/pkg/container/testvectors/Base64URLGzip
@@ -1 +0,0 @@
-PH4sIAAAAAAAA_5zWa5cUxR3HcVcRiejmuCII3siKwgnubnd1dVW1eIS5rzM9w8zs3HZETFd19_T07PTcZ2cH1KMgoB41YgIo3nM0G1GCRhCRiILIEaIhIEo0Bi9c9ewaFfEazYMd8iCPdvIGvk8-p_71e1RnZaujyt_e2_LQLYk5Fbb1QefFR9-_5LzWO59-9PfWoWV_nN_f177z06eH31j13Je8-Wpk35bTccKjtV_22MRfnz9DufuSg8Ntn02KzZtw83sLxj-mGE441FIoVZhidal9qTl8J9fJdRRZJz_IlIpaI2pavTKjDVxZR_5MQXa4aFIFgr-gMCrrOTWUqWNajNZERzin0GLRz7IxsTcfAgnGsqrRpedyXVQpMq2Wn5K68dmLWLpU-p9msRbQ-usuHEsGorZK0BbwxWzxvCdrhDK2vL23UMCRTM0RlStVxPK5vpsXMaWvj3Vee90i5Wq9s6r0VbRTWalC__-smtXKyu8MERNOwJSZkCACeAFgzkC6xGkYAhOLqkJEiBXJkJAuCUBUTMIA4KEgAEWzchbT5DXHfxwc7LiqNnPmRwdHgBa8NO6jDQ9uvW6wa7DHYetfP3DxO4s7JhybLa1YcerUV-Yae7aDww_P2_zjvH9euWqOOW3yjBWtO2__bKzLvfnR_enEpmaBMtFuy4qEsgrlqRMpPm86mql6apjI4V63V_bFgl5WT-USpQhDowVK2amiFmM8tEUsiRJcCeowHM9AvVQreLGE83LMkcBBI99dAE0ANZNtAGFewJjwkilBJPG8TphoKEQhmihKpsgBXuIVhXEGRRQpRGAmhzkRqIpOaQNo4afuoTWTj60cfjw5fQQoxy98ZPGmF3YsWLJo8voJ587Y9-X38geyLBq_nHXZIy9fPun5m1pebqVzv7J-NuaM08XEzYl3v3kmtfuCr2Yc-VAa3vtxS7NAnpKSKsBEzVaMphWdFB0kgNSEgHpwiPe7a0qaxYtVG_SVq_7RAhkey-asYmfUZ1XKMbGSr-Vo1UZ60rZyNV6Uy8l8MY_iES1ic0abAGom2wCCEqcLVFRNpEKBaghAaCBJUYgKOVNVGMQCUyXRQBqFTJWwKQkIIoZFQW8AvZV64bRDez_6flYbbmu8oDa_euu2yJB9w1vX3uO-YrZvobj2yK07V7-1YebjrRcgbsvS4fiyJ9_gpx4KvT5n_A7PTz-cqF_asuuaoTFnn2N-bbU2CaSHi0bJlrEi3kyh6NFrgqOu59VKOJ2t9Xj4sllT4wXqJdFQfzI2aiBvIGSG_Zls2IsDSdKblRV3QlQz2X7Z2evudVBk16QIM1yiCZsBaiLbAOIEnROQppu8AjgKiKqIhgQVwDQCTCKJkqCIBIqGpoicCilvcoxDWJewcPLE3TD0fHzb0y_BrtRd2gjQN3fd--36ju_CYzuV8adcsOeA95UvVv-09N1t05_bN7DllouWTN-18r4nTm-9Y8uZ2L02fj1XLizHlzyfrZ-x65Pt503b0uyJs0oDhpWuSh4vwFpJjlcDciKRCbtQTzmvxkWrKIWCUQm51FomO1ogKyMLyXSPx0xHxKrixwFT7a9XgzUUTuedXgDi8XKmgGJmJOwMNQHUTLYBhERGkE6YCTXEYYAYxxuE5xGnCbopAkWjAtCgbhCMKAUQmQqkvA4wJaQBpNyhPfDyK9Ijs-yOv40ArTv_hoMtSbB12NjtzD1Ef35ow47k_D3frn41f-2LX6YmdTxzzba3t180_7XFV5m-fz304tj2Td-t7Nx_oblszv7ctI2Hmz1xhayl1myOkhEOxUt2S_S4shFvMI7dIbseyPa4AlalJ8q6g2KhGBktUJGVfQEaSsXtsK7EnXnC6zIP84ZHrYUyGR9vcxXj9lwuaIvG7E0ANZM9-QcBHkNCNFMFEKhYFTRiSBoUOV0RTE3DKmWMCJKhijzgeJWakgoIwyLUuAZQSlq-Y177mBOSHt49AjRF-PBAe9d1H3ffcvyZczrHLAhP9X3jC5y797YFa-mNxYl_evDqo4fu_8NZh3d88un1R1f_5cfBf8_76p3tv_psyooll_k-nj2mWaC6b8BCmVrCytYjIFZKF1wytmUFKdijVuoCLIdrBV8dk3AxbIwWqJRAkpyRMnkY9ReLcipX8PR3u6RcrheykFINGCCc7-lJ25LMpjUB1Ez25IljDHFYpCYUiUYR4yVkUMKYIEiSiTDBSFcRgAajPAOU6ibjmShBToOwAXRf-6V31zceuXHdjHV9I0D7Jn7wgXzr4TVX_-PYw_mpLatO69_qW7R1Q-m8o9OcsGP2rM_f3lM_3n0_-aL18zWHV-eHzkik9r4_LriMt16a98Tm889sdiTASDqRwFLW3evj6_mU6i96cqInGEY4Ea0F1brlsPUXJSlCrcpogfRCzGll1YKRsqXrWEuVajq21wK5buKv5FxOV7wQy4Wz5Wwg3NRIaCbbABKopoi6BkymSSrTRCpSQ8UqEEQBmkTTBQp0VcSGBgAvYaiZCgQMUiz89wXdVtm7cNtjqvLmb5ZtHAHq2vfX9Uem2q-ZXTzw3oub0ruemj52f29hwuWeZ2_6_qylidcO5d9p3310-_wptTV3Dv1WXZzbuLsNDU2-dzDy7Sf84MxxTQKZAxWi5wO0Agci0WTOnStHklUpbPaHSi7JcsV9UbvH6_IHzHTVNeqRwLtlj6rV_T3ZehxGex2KLA3EXX4XhNmaGZdj-VjCRgy37HA4mhkJTWQbQBImhOkcbyIeQA1oiOcNBVBEdBWYlOc0IgBAREPnBYoABSavUAI0RhFuAM22T_nzs8NTTyz94YFVI0Bze_9-4utz3dvfW5B7fXL7uJWvr-1rO-uG5evusY_jlk-ynvzheOfE5IFIt4ieunAfO3bK-CWuX2w-0HbQP_fDi-8Y2NPsitNYLCfr2YLGEhrwg7LNoL3ZWKLSAzwDxNvNV_OA1L0oFVdToz5xuURswBupyoo7Ggua8Vg8kIjV5TLvcyCUDJsV7PXKuglTehn5mwBqJnvyBSEd6qpKTV5HCEOeU4mBCJSwpImmIkBd4BRGoUEUHUlMQ6amQVVVJB2CBpBwxRsH-9-cvnYnOfvd_wQAAP__hMJ751MQAAA
--- a/pkg/container/testvectors/Bytes
+++ b/pkg/container/testvectors/Bytes
--- a/pkg/container/testvectors/BytesGzipped
+++ b/pkg/container/testvectors/BytesGzipped
--- a/pkg/container/writer.go
+++ b/pkg/container/writer.go
@@ -3,6 +3,7 @@ package container
 import (
 	"bytes"
 	"io"
+	"slices"

 	"github.com/ipld/go-ipld-prime"
 	"github.com/ipld/go-ipld-prime/codec/cbor"
@@ -73,12 +74,12 @@ func (ctn Writer) ToBase64URLWriter(w io.Writer) error {
 	return ctn.toWriter(headerBase64URL, w)
 }

-// ToBase64URL encode the container into pre-gzipped base64 string, with URL-safe encoding and no padding.
-func (ctn Writer) ToBase64URLGzip() (string, error) {
+// ToBase64URLGzipped encode the container into pre-gzipped base64 string, with URL-safe encoding and no padding.
+func (ctn Writer) ToBase64URLGzipped() (string, error) {
 	return ctn.toString(headerBase64URLGzip)
 }

-// ToBase64URLWriter is the same as ToBase64URL, but with an io.Writer.
+// ToBase64URLGzipWriter is the same as ToBase64URL, but with an io.Writer.
 func (ctn Writer) ToBase64URLGzipWriter(w io.Writer) error {
 	return ctn.toWriter(headerBase64URLGzip, w)
 }
@@ -109,8 +110,13 @@ func (ctn Writer) toWriter(header header, w io.Writer) (err error) {
 	}()
 	node, err := qp.BuildMap(basicnode.Prototype.Any, 1, func(ma datamodel.MapAssembler) {
 		qp.MapEntry(ma, containerVersionTag, qp.List(int64(len(ctn)), func(la datamodel.ListAssembler) {
-			for data, _ := range ctn {
-				qp.ListEntry(la, qp.Bytes([]byte(data)))
+			tokens := make([][]byte, 0, len(ctn))
+			for data := range ctn {
+				tokens = append(tokens, []byte(data))
+			}
+			slices.SortFunc(tokens, bytes.Compare)
+			for _, data := range tokens {
+				qp.ListEntry(la, qp.Bytes(data))
 			}
 		}))
 	})
@@ -120,3 +126,20 @@ func (ctn Writer) toWriter(header header, w io.Writer) (err error) {

 	return ipld.EncodeStreaming(encoder, node, cbor.Encode)
 }
+
+// ToReader convert a container Writer into a Reader.
+// Most likely, you only want to use this in tests for convenience.
+// This is not optimized and can panic.
+func (ctn Writer) ToReader() Reader {
+	data, err := ctn.ToBytes()
+	if err != nil {
+		panic(err)
+	}
+
+	reader, err := FromBytes(data)
+	if err != nil {
+		panic(err)
+	}
+
+	return reader
+}
--- a/pkg/policy/ipld_test.go
+++ b/pkg/policy/ipld_test.go
@@ -1,14 +1,11 @@
 package policy

 import (
-	"fmt"
 	"testing"

 	"github.com/ipld/go-ipld-prime"
 	"github.com/ipld/go-ipld-prime/codec/dagjson"
 	"github.com/stretchr/testify/require"
-
-	"github.com/ucan-wg/go-ucan/pkg/policy/literal"
 )

 func TestIpldRoundTrip(t *testing.T) {
@@ -65,19 +62,3 @@ func TestIpldRoundTrip(t *testing.T) {
 		require.JSONEq(t, tc.dagJsonStr, string(wroteAsDagJson))
 	}
 }
-
-func TestFoo(t *testing.T) {
-	fmt.Println(MustConstruct(
-		And(
-			Equal(".foo1", literal.String(".bar1")),
-			NotEqual(".foo2", literal.String(".bar2")),
-		),
-		Or(
-			GreaterThan(".foo5", literal.Float(5.2)),
-			GreaterThanOrEqual(".foo6", literal.Float(6.2)),
-		),
-		Not(Like(".foo7", "*@example.com")),
-		All(".foo8", LessThan(".foo3", literal.Int(3))),
-		Any(".foo9", LessThanOrEqual(".foo4", literal.Int(4))),
-	))
-}
--- a/pkg/policy/limits/int.go
+++ b/pkg/policy/limits/int.go
@@ -9,9 +9,9 @@ import (

 const (
 	// MaxInt53 represents the maximum safe integer in JavaScript (2^53 - 1)
-	MaxInt53 = 9007199254740991
+	MaxInt53 int64 = 9007199254740991
 	// MinInt53 represents the minimum safe integer in JavaScript (-2^53 + 1)
-	MinInt53 = -9007199254740991
+	MinInt53 int64 = -9007199254740991
 )

 func ValidateIntegerBoundsIPLD(node ipld.Node) error {
--- a/pkg/policy/literal/literal.go
+++ b/pkg/policy/literal/literal.go
@@ -185,7 +185,7 @@ func anyAssemble(val any) qp.Assemble {
 		return qp.Int(i)
 	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
 		u := rv.Uint()
-		if u > limits.MaxInt53 {
+		if u > uint64(limits.MaxInt53) {
 			panic(fmt.Sprintf("unsigned integer %d exceeds safe bounds", u))
 		}
 		return qp.Int(int64(u))
--- a/pkg/policy/selector/parsing.go
+++ b/pkg/policy/selector/parsing.go
@@ -68,7 +68,7 @@ func Parse(str string) (Selector, error) {
 				if err != nil {
 					return nil, newParseError("invalid index", str, col, tok)
 				}
-				if idx > limits.MaxInt53 || idx < limits.MinInt53 {
+				if int64(idx) > limits.MaxInt53 || int64(idx) < limits.MinInt53 {
 					return nil, newParseError(fmt.Sprintf("index %d exceeds safe integer bounds", idx), str, col, tok)
 				}
 				sel = append(sel, segment{str: tok, optional: opt, index: idx})
--- a/token/delegation/delegation.go
+++ b/token/delegation/delegation.go
@@ -16,7 +16,8 @@ import (
 	"strings"
 	"time"

-	"github.com/ucan-wg/go-ucan/did"
+	"github.com/MetaMask/go-did-it"
+
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/pkg/meta"
 	"github.com/ucan-wg/go-ucan/pkg/policy"
@@ -83,7 +84,7 @@ func New(iss did.DID, aud did.DID, cmd command.Command, pol policy.Policy, sub d
 }

 // Root creates a validated UCAN delegation Token from the provided parameters and options.
-// This is typically used to create and give a power to an agent.
+// This is typically used to create and give power to an agent.
 //
 // You can read it as "(issuer) allows (audience) to perform (cmd+pol) on itself".
 func Root(iss did.DID, aud did.DID, cmd command.Command, pol policy.Policy, opts ...Option) (*Token, error) {
@@ -102,7 +103,7 @@ func Root(iss did.DID, aud did.DID, cmd command.Command, pol policy.Policy, opts
 //
 // You can read it as "(issuer) allows (audience) to perform (cmd+pol) on anything".
 func Powerline(iss did.DID, aud did.DID, cmd command.Command, pol policy.Policy, opts ...Option) (*Token, error) {
-	return New(iss, aud, cmd, pol, did.Undef, opts...)
+	return New(iss, aud, cmd, pol, nil, opts...)
 }

 // Issuer returns the did.DID representing the Token's issuer.
@@ -154,6 +155,16 @@ func (t *Token) Expiration() *time.Time {
 	return t.expiration
 }

+// IsRoot tells if the token is a root delegation.
+func (t *Token) IsRoot() bool {
+	return t.issuer.Equal(t.subject)
+}
+
+// IsPowerline tells if the token is a powerline delegation.
+func (t *Token) IsPowerline() bool {
+	return t.subject == nil
+}
+
 // IsValidNow verifies that the token can be used at the current time, based on expiration or "not before" fields.
 // This does NOT do any other kind of verifications.
 func (t *Token) IsValidNow() bool {
@@ -179,7 +190,7 @@ func (t *Token) String() string {
 	switch {
 	case t.issuer == t.subject:
 		kind = " (root delegation)"
-	case t.subject == did.Undef:
+	case t.subject == nil:
 		kind = " (powerline delegation)"
 	default:
 		kind = " (normal delegation)"
@@ -202,7 +213,7 @@ func (t *Token) validate() error {
 	var errs error

 	requiredDID := func(id did.DID, fieldname string) {
-		if !id.Defined() {
+		if id == nil {
 			errs = errors.Join(errs, fmt.Errorf(`a valid did is required for %s: %s`, fieldname, id.String()))
 		}
 	}
@@ -227,7 +238,7 @@ func tokenFromModel(m tokenPayloadModel) (*Token, error) {

 	tkn.issuer, err = did.Parse(m.Iss)
 	if err != nil {
-		return nil, fmt.Errorf("parse iss: %w", err)
+		return nil, fmt.Errorf("parse issuer: %w", err)
 	}

 	if tkn.audience, err = did.Parse(m.Aud); err != nil {
--- a/token/delegation/delegation_test.go
+++ b/token/delegation/delegation_test.go
@@ -1,57 +1,43 @@
 package delegation_test

 import (
+	_ "embed"
 	"encoding/base64"
 	"testing"
 	"time"

+	"github.com/MetaMask/go-did-it/didtest"
 	"github.com/stretchr/testify/require"
-	"gotest.tools/v3/golden"

-	"github.com/ucan-wg/go-ucan/did/didtest"
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/pkg/policy"
 	"github.com/ucan-wg/go-ucan/token/delegation"
 )

+//go:embed testdata/new.dagjson
+var newDagJson []byte
+
+//go:embed testdata/powerline.dagjson
+var powerlineDagJson []byte
+
+//go:embed testdata/root.dagjson
+var rootDagJson []byte
+
 const (
 	nonce = "6roDhGi0kiNriQAz7J3d+bOeoI/tj8ENikmQNbtjnD0"

 	subJectCmd = "/foo/bar"
 	subjectPol = `
 [
-	[
-		"==",
-		".status",
-		"draft"
+  ["==", ".status", "draft"],
+  ["all", ".reviewer",
+    ["like", ".email", "*@example.com"]
  ],
-	[
-		"all",
-		".reviewer",
-		[
-			"like",
-			".email",
-			"*@example.com"
-		]
-	],
-	[
-		"any",
-		".tags",
-		[
-			"or",
-			[
-				[
-					"==",
-					".",
-					"news"
-				],
-				[
-					"==",
-					".",
-					"press"
-				]
-			]
-		]
+  ["any", ".tags",
+    ["or", [
+      ["==", ".", "news"],
+      ["==", ".", "press"]
+    ]]
  ]
 ]
 `
@@ -80,15 +66,16 @@ func TestConstructors(t *testing.T) {
 		)
 		require.NoError(t, err)

+		require.False(t, tkn.IsRoot())
+		require.False(t, tkn.IsPowerline())
+
 		data, err := tkn.ToDagJson(didtest.PersonaAlice.PrivKey())
 		require.NoError(t, err)

-		golden.Assert(t, string(data), "new.dagjson")
+		require.Equal(t, newDagJson, data)
 	})

 	t.Run("Root", func(t *testing.T) {
-		t.Parallel()
-
 		tkn, err := delegation.Root(didtest.PersonaAlice.DID(), didtest.PersonaBob.DID(), cmd, pol,
 			delegation.WithNonce([]byte(nonce)),
 			delegation.WithExpiration(exp),
@@ -97,15 +84,16 @@ func TestConstructors(t *testing.T) {
 		)
 		require.NoError(t, err)

+		require.True(t, tkn.IsRoot())
+		require.False(t, tkn.IsPowerline())
+
 		data, err := tkn.ToDagJson(didtest.PersonaAlice.PrivKey())
 		require.NoError(t, err)

-		golden.Assert(t, string(data), "root.dagjson")
+		require.Equal(t, rootDagJson, data)
 	})

 	t.Run("Powerline", func(t *testing.T) {
-		t.Parallel()
-
 		tkn, err := delegation.Powerline(didtest.PersonaAlice.DID(), didtest.PersonaBob.DID(), cmd, pol,
 			delegation.WithNonce([]byte(nonce)),
 			delegation.WithExpiration(exp),
@@ -114,10 +102,13 @@ func TestConstructors(t *testing.T) {
 		)
 		require.NoError(t, err)

+		require.False(t, tkn.IsRoot())
+		require.True(t, tkn.IsPowerline())
+
 		data, err := tkn.ToDagJson(didtest.PersonaAlice.PrivKey())
 		require.NoError(t, err)

-		golden.Assert(t, string(data), "powerline.dagjson")
+		require.Equal(t, powerlineDagJson, data)
 	})
 }

--- a/token/delegation/delegationtest/data/TokenAliceAlice.dagcbor
+++ b/token/delegation/delegationtest/data/TokenAliceAlice.dagcbor
--- a/token/delegation/delegationtest/data/TokenAliceBob.dagcbor
+++ b/token/delegation/delegationtest/data/TokenAliceBob.dagcbor
--- a/token/delegation/delegationtest/data/TokenBobBob.dagcbor
+++ b/token/delegation/delegationtest/data/TokenBobBob.dagcbor
--- a/token/delegation/delegationtest/data/TokenBobCarol.dagcbor
+++ b/token/delegation/delegationtest/data/TokenBobCarol.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolCarol.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolCarol.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolDan.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolDan.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolDan_InvalidExpandedCommand.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolDan_InvalidExpandedCommand.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolDan_InvalidExpired.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolDan_InvalidExpired.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolDan_InvalidInactive.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolDan_InvalidInactive.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolDan_InvalidSubject.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolDan_InvalidSubject.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolDan_ValidAttenuatedCommand.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolDan_ValidAttenuatedCommand.dagcbor
--- a/token/delegation/delegationtest/data/TokenCarolDan_ValidExamplePolicy.dagcbor
+++ b/token/delegation/delegationtest/data/TokenCarolDan_ValidExamplePolicy.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanDan.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanDan.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanErin.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanErin.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanErin_InvalidExpandedCommand.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanErin_InvalidExpandedCommand.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanErin_InvalidExpired.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanErin_InvalidExpired.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanErin_InvalidInactive.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanErin_InvalidInactive.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanErin_InvalidSubject.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanErin_InvalidSubject.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanErin_ValidAttenuatedCommand.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanErin_ValidAttenuatedCommand.dagcbor
--- a/token/delegation/delegationtest/data/TokenDanErin_ValidExamplePolicy.dagcbor
+++ b/token/delegation/delegationtest/data/TokenDanErin_ValidExamplePolicy.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinErin.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinErin.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinFrank.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinFrank.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinFrank_InvalidExpandedCommand.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinFrank_InvalidExpandedCommand.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinFrank_InvalidExpired.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinFrank_InvalidExpired.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinFrank_InvalidInactive.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinFrank_InvalidInactive.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinFrank_InvalidSubject.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinFrank_InvalidSubject.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinFrank_ValidAttenuatedCommand.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinFrank_ValidAttenuatedCommand.dagcbor
--- a/token/delegation/delegationtest/data/TokenErinFrank_ValidExamplePolicy.dagcbor
+++ b/token/delegation/delegationtest/data/TokenErinFrank_ValidExamplePolicy.dagcbor
--- a/token/delegation/delegationtest/data/TokenFrankFrank.dagcbor
+++ b/token/delegation/delegationtest/data/TokenFrankFrank.dagcbor
--- a/token/delegation/delegationtest/generator/generator.go
+++ b/token/delegation/delegationtest/generator/generator.go
@@ -9,11 +9,12 @@ import (
 	"slices"
 	"time"

+	"github.com/MetaMask/go-did-it"
+	didkeyctl "github.com/MetaMask/go-did-it/controller/did-key"
+	"github.com/MetaMask/go-did-it/crypto"
+	"github.com/MetaMask/go-did-it/didtest"
 	"github.com/ipfs/go-cid"
-	"github.com/libp2p/go-libp2p/core/crypto"

-	"github.com/ucan-wg/go-ucan/did"
-	"github.com/ucan-wg/go-ucan/did/didtest"
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/pkg/policy"
 	"github.com/ucan-wg/go-ucan/pkg/policy/policytest"
@@ -30,7 +31,7 @@ const (
 var constantNonce = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b}

 type newDelegationParams struct {
-	privKey crypto.PrivKey // iss
+	privKey crypto.PrivateKeySigningBytes // iss
 	aud     did.DID
 	cmd     command.Command
 	pol     policy.Policy
@@ -70,6 +71,25 @@ type generator struct {
 	chains []proof
 }

+func (g *generator) createSelfDelegations(personas []didtest.Persona) error {
+	for _, persona := range personas {
+		_, err := g.createDelegation(newDelegationParams{
+			privKey: persona.PrivKey(),
+			aud:     persona.DID(),
+			cmd:     delegationtest.NominalCommand,
+			pol:     policytest.EmptyPolicy,
+			sub:     persona.DID(),
+			opts: []delegation.Option{
+				delegation.WithNonce(constantNonce),
+			},
+		}, persona.Name()+persona.Name(), noopVariant())
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func (g *generator) chainPersonas(personas []didtest.Persona, acc acc, vari variant) error {
 	acc.name += personas[0].Name()

@@ -157,10 +177,7 @@ func (g *generator) chainPersonas(personas []didtest.Persona, acc acc, vari vari
 func (g *generator) createDelegation(params newDelegationParams, name string, vari variant) (cid.Cid, error) {
 	vari.variant(&params)

-	issDID, err := did.FromPrivKey(params.privKey)
-	if err != nil {
-		return cid.Undef, err
-	}
+	issDID := didkeyctl.FromPrivateKey(params.privKey)

 	tkn, err := delegation.New(issDID, params.aud, params.cmd, params.pol, params.sub, params.opts...)
 	if err != nil {
@@ -242,7 +259,7 @@ func (g *generator) writeGoFile() error {
 	Println("}")

 	Println()
-	Println("var AllBundles = []*delegation.Bundle{")
+	Println("var AllBundles = []delegation.Bundle{")
 	for _, d := range g.dlgs {
 		Printf("\t%sBundle,\n", d.name)
 	}
--- a/token/delegation/delegationtest/generator/main.go
+++ b/token/delegation/delegationtest/generator/main.go
@@ -1,12 +1,16 @@
 package main

 import (
-	"github.com/ucan-wg/go-ucan/did/didtest"
+	"github.com/MetaMask/go-did-it/didtest"
 )

 func main() {
 	gen := &generator{}
-	err := gen.chainPersonas(didtest.Personas(), acc{}, noopVariant())
+	err := gen.createSelfDelegations(didtest.Personas())
+	if err != nil {
+		panic(err)
+	}
+	err = gen.chainPersonas(didtest.Personas(), acc{}, noopVariant())
 	if err != nil {
 		panic(err)
 	}
--- a/token/delegation/delegationtest/token.go
+++ b/token/delegation/delegationtest/token.go
@@ -5,6 +5,7 @@ import (
 	"path/filepath"
 	"sync"

+	_ "github.com/MetaMask/go-did-it/verifiers/did-key"
 	"github.com/ipfs/go-cid"

 	"github.com/ucan-wg/go-ucan/pkg/command"
@@ -38,7 +39,7 @@ var fs embed.FS
 var _ delegation.Loader = (*DelegationLoader)(nil)

 type DelegationLoader struct {
-	bundles map[cid.Cid]*delegation.Bundle
+	bundles map[cid.Cid]delegation.Bundle
 }

 var (
@@ -75,7 +76,7 @@ func loadDelegations() (*DelegationLoader, error) {
 		return nil, err
 	}

-	bundles := make(map[cid.Cid]*delegation.Bundle, len(dirEntries))
+	bundles := make(map[cid.Cid]delegation.Bundle, len(dirEntries))

 	for _, dirEntry := range dirEntries {
 		data, err := fs.ReadFile(filepath.Join(TokenDir, dirEntry.Name()))
@@ -88,7 +89,7 @@ func loadDelegations() (*DelegationLoader, error) {
 			return nil, err
 		}

-		bundles[id] = &delegation.Bundle{Cid: id, Decoded: tkn, Sealed: data}
+		bundles[id] = delegation.Bundle{Cid: id, Decoded: tkn, Sealed: data}
 	}

 	return &DelegationLoader{
@@ -106,7 +107,7 @@ func CidToName(id cid.Cid) string {
 	return cidToName[id]
 }

-func mustGetBundle(id cid.Cid) *delegation.Bundle {
+func mustGetBundle(id cid.Cid) delegation.Bundle {
 	bundle, ok := GetDelegationLoader().bundles[id]
 	if !ok {
 		panic(delegation.ErrDelegationNotFound)
--- a/token/delegation/delegationtest/token_gen.go
+++ b/token/delegation/delegationtest/token_gen.go
@@ -9,167 +9,215 @@ import (
 )

 var (
-	TokenAliceBobCID    = cid.MustParse("bafyreicidrwvmac5lvjypucgityrtjsknojraio7ujjli4r5eyby66wjzm")
+	TokenAliceAliceCID    = cid.MustParse("bafyreiddqsv5rrpcormtcs3dg7hzwjr2grxyyozc2f2surxdbnctdqpfzi")
+	TokenAliceAliceSealed = mustGetBundle(TokenAliceAliceCID).Sealed
+	TokenAliceAliceBundle = mustGetBundle(TokenAliceAliceCID)
+	TokenAliceAlice       = mustGetBundle(TokenAliceAliceCID).Decoded
+)
+
+var (
+	TokenBobBobCID    = cid.MustParse("bafyreid4dwdov4yijvnb7xxhcndsxifzw5yry4sm4frex6relttlnledo4")
+	TokenBobBobSealed = mustGetBundle(TokenBobBobCID).Sealed
+	TokenBobBobBundle = mustGetBundle(TokenBobBobCID)
+	TokenBobBob       = mustGetBundle(TokenBobBobCID).Decoded
+)
+
+var (
+	TokenCarolCarolCID    = cid.MustParse("bafyreiekuehdsubdfllqecsat4gsfveyqq6442ejuiqfsgu3tplrus5l3e")
+	TokenCarolCarolSealed = mustGetBundle(TokenCarolCarolCID).Sealed
+	TokenCarolCarolBundle = mustGetBundle(TokenCarolCarolCID)
+	TokenCarolCarol       = mustGetBundle(TokenCarolCarolCID).Decoded
+)
+
+var (
+	TokenDanDanCID    = cid.MustParse("bafyreigzd442yhyizbx54kd76ewxssh5owuxv26ziittnblnj4h3a555dm")
+	TokenDanDanSealed = mustGetBundle(TokenDanDanCID).Sealed
+	TokenDanDanBundle = mustGetBundle(TokenDanDanCID)
+	TokenDanDan       = mustGetBundle(TokenDanDanCID).Decoded
+)
+
+var (
+	TokenErinErinCID    = cid.MustParse("bafyreigl5lbogpzq7iyz6qkzhicv4zscu26j62k4ydgcqogdiqmks5tz7q")
+	TokenErinErinSealed = mustGetBundle(TokenErinErinCID).Sealed
+	TokenErinErinBundle = mustGetBundle(TokenErinErinCID)
+	TokenErinErin       = mustGetBundle(TokenErinErinCID).Decoded
+)
+
+var (
+	TokenFrankFrankCID    = cid.MustParse("bafyreic6hgmqf2vwszboldlqeobpy2plpkcmj4dhhug76akcnafb2pt6em")
+	TokenFrankFrankSealed = mustGetBundle(TokenFrankFrankCID).Sealed
+	TokenFrankFrankBundle = mustGetBundle(TokenFrankFrankCID)
+	TokenFrankFrank       = mustGetBundle(TokenFrankFrankCID).Decoded
+)
+
+var (
+	TokenAliceBobCID    = cid.MustParse("bafyreifa35rjstdm37cjudzs72ab22rnh5blny725khtapox63fnsj6pbe")
 	TokenAliceBobSealed = mustGetBundle(TokenAliceBobCID).Sealed
 	TokenAliceBobBundle = mustGetBundle(TokenAliceBobCID)
 	TokenAliceBob       = mustGetBundle(TokenAliceBobCID).Decoded
 )

 var (
-	TokenBobCarolCID    = cid.MustParse("bafyreihxv2uhq43oxllzs2xfvxst7wtvvvl7pohb2chcz6hjvfv2ntea5u")
+	TokenBobCarolCID    = cid.MustParse("bafyreiaysaafvfplhjsjywaqfletlr2sziui3sekkczwp2srszdoezwc7u")
 	TokenBobCarolSealed = mustGetBundle(TokenBobCarolCID).Sealed
 	TokenBobCarolBundle = mustGetBundle(TokenBobCarolCID)
 	TokenBobCarol       = mustGetBundle(TokenBobCarolCID).Decoded
 )

 var (
-	TokenCarolDanCID    = cid.MustParse("bafyreihclsgiroazq3heqdswvj2cafwqbpboicq7immo65scl7ahktpsdq")
+	TokenCarolDanCID    = cid.MustParse("bafyreibwpzxcvrere7g5riv3dhza4xibrvulxcvj2nwxu6ozp572o2sbfa")
 	TokenCarolDanSealed = mustGetBundle(TokenCarolDanCID).Sealed
 	TokenCarolDanBundle = mustGetBundle(TokenCarolDanCID)
 	TokenCarolDan       = mustGetBundle(TokenCarolDanCID).Decoded
 )

 var (
-	TokenDanErinCID    = cid.MustParse("bafyreicja6ihewy64p3ake56xukotafjlkh4uqep2qhj52en46zzfwby3e")
+	TokenDanErinCID    = cid.MustParse("bafyreichxodkcokcbvomxhmlf3g3j3zokruxvca63itynf7ib3hsmi4hla")
 	TokenDanErinSealed = mustGetBundle(TokenDanErinCID).Sealed
 	TokenDanErinBundle = mustGetBundle(TokenDanErinCID)
 	TokenDanErin       = mustGetBundle(TokenDanErinCID).Decoded
 )

 var (
-	TokenErinFrankCID    = cid.MustParse("bafyreicjlx3lobxm6hl5s4htd4ydwkkqeiou6rft4rnvulfdyoew565vka")
+	TokenErinFrankCID    = cid.MustParse("bafyreigg434khwxqyfasnk63pi542uwtbrlpfd5sgjfrddqqcba3tardlu")
 	TokenErinFrankSealed = mustGetBundle(TokenErinFrankCID).Sealed
 	TokenErinFrankBundle = mustGetBundle(TokenErinFrankCID)
 	TokenErinFrank       = mustGetBundle(TokenErinFrankCID).Decoded
 )

 var (
-	TokenCarolDan_InvalidExpandedCommandCID    = cid.MustParse("bafyreid3m3pk53gqgp5rlzqhvpedbwsqbidqlp4yz64vknwbzj7bxrmsr4")
+	TokenCarolDan_InvalidExpandedCommandCID    = cid.MustParse("bafyreifxdve23izhlg7fhzqh32i6wxtw33rqidm3cb72pghxlovnensjwe")
 	TokenCarolDan_InvalidExpandedCommandSealed = mustGetBundle(TokenCarolDan_InvalidExpandedCommandCID).Sealed
 	TokenCarolDan_InvalidExpandedCommandBundle = mustGetBundle(TokenCarolDan_InvalidExpandedCommandCID)
 	TokenCarolDan_InvalidExpandedCommand       = mustGetBundle(TokenCarolDan_InvalidExpandedCommandCID).Decoded
 )

 var (
-	TokenDanErin_InvalidExpandedCommandCID    = cid.MustParse("bafyreifn4sy5onwajx3kqvot5mib6m6xarzrqjozqbzgmzpmc5ox3g2uzm")
+	TokenDanErin_InvalidExpandedCommandCID    = cid.MustParse("bafyreieblevkqh2xnbr4x5mosvwv7rboat7ip6ucqvefb2pomrb4qjg4wu")
 	TokenDanErin_InvalidExpandedCommandSealed = mustGetBundle(TokenDanErin_InvalidExpandedCommandCID).Sealed
 	TokenDanErin_InvalidExpandedCommandBundle = mustGetBundle(TokenDanErin_InvalidExpandedCommandCID)
 	TokenDanErin_InvalidExpandedCommand       = mustGetBundle(TokenDanErin_InvalidExpandedCommandCID).Decoded
 )

 var (
-	TokenErinFrank_InvalidExpandedCommandCID    = cid.MustParse("bafyreidmpgd36jznmq42bs34o4qi3fcbrsh4idkg6ejahudejzwb76fwxe")
+	TokenErinFrank_InvalidExpandedCommandCID    = cid.MustParse("bafyreia2ckukamhpeqpcdhevr75ym66vqem432dx4dwbdrdkh63pke3r3i")
 	TokenErinFrank_InvalidExpandedCommandSealed = mustGetBundle(TokenErinFrank_InvalidExpandedCommandCID).Sealed
 	TokenErinFrank_InvalidExpandedCommandBundle = mustGetBundle(TokenErinFrank_InvalidExpandedCommandCID)
 	TokenErinFrank_InvalidExpandedCommand       = mustGetBundle(TokenErinFrank_InvalidExpandedCommandCID).Decoded
 )

 var (
-	TokenCarolDan_ValidAttenuatedCommandCID    = cid.MustParse("bafyreiekhtm237vyapk3c6voeb5lnz54crebqdqi3x4wn4u4cbrrhzsqfe")
+	TokenCarolDan_ValidAttenuatedCommandCID    = cid.MustParse("bafyreibftsq3mhjd5itg6jbos4doccwspvmnilpuduniv2el7mnl45z33y")
 	TokenCarolDan_ValidAttenuatedCommandSealed = mustGetBundle(TokenCarolDan_ValidAttenuatedCommandCID).Sealed
 	TokenCarolDan_ValidAttenuatedCommandBundle = mustGetBundle(TokenCarolDan_ValidAttenuatedCommandCID)
 	TokenCarolDan_ValidAttenuatedCommand       = mustGetBundle(TokenCarolDan_ValidAttenuatedCommandCID).Decoded
 )

 var (
-	TokenDanErin_ValidAttenuatedCommandCID    = cid.MustParse("bafyreicrvzqferyy7rgo75l5rn6r2nl7zyeexxjmu3dm4ff7rn2coblj4y")
+	TokenDanErin_ValidAttenuatedCommandCID    = cid.MustParse("bafyreig5gsifqn3afnyaoqtjhnud2w7tnrda57eiel3d45vbp47hjyayey")
 	TokenDanErin_ValidAttenuatedCommandSealed = mustGetBundle(TokenDanErin_ValidAttenuatedCommandCID).Sealed
 	TokenDanErin_ValidAttenuatedCommandBundle = mustGetBundle(TokenDanErin_ValidAttenuatedCommandCID)
 	TokenDanErin_ValidAttenuatedCommand       = mustGetBundle(TokenDanErin_ValidAttenuatedCommandCID).Decoded
 )

 var (
-	TokenErinFrank_ValidAttenuatedCommandCID    = cid.MustParse("bafyreie6fhspk53kplcc2phla3e7z7fzldlbmmpuwk6nbow5q6s2zjmw2q")
+	TokenErinFrank_ValidAttenuatedCommandCID    = cid.MustParse("bafyreiex2qyrw3xmye4fk5wdf6ukea3ojbokq77k6y566hupj6cicszi3e")
 	TokenErinFrank_ValidAttenuatedCommandSealed = mustGetBundle(TokenErinFrank_ValidAttenuatedCommandCID).Sealed
 	TokenErinFrank_ValidAttenuatedCommandBundle = mustGetBundle(TokenErinFrank_ValidAttenuatedCommandCID)
 	TokenErinFrank_ValidAttenuatedCommand       = mustGetBundle(TokenErinFrank_ValidAttenuatedCommandCID).Decoded
 )

 var (
-	TokenCarolDan_InvalidSubjectCID    = cid.MustParse("bafyreifgksz6756if42tnc6rqsnbaa2u3fdrveo7ek44lnj2d64d5sw26u")
+	TokenCarolDan_InvalidSubjectCID    = cid.MustParse("bafyreie7snyknubaeh4ruig7wxvos54b7skmwsnegf6k23bsffs5btbiiq")
 	TokenCarolDan_InvalidSubjectSealed = mustGetBundle(TokenCarolDan_InvalidSubjectCID).Sealed
 	TokenCarolDan_InvalidSubjectBundle = mustGetBundle(TokenCarolDan_InvalidSubjectCID)
 	TokenCarolDan_InvalidSubject       = mustGetBundle(TokenCarolDan_InvalidSubjectCID).Decoded
 )

 var (
-	TokenDanErin_InvalidSubjectCID    = cid.MustParse("bafyreibdwew5nypsxrm4fq73wu6hw3lgwwiolj3bi33xdrbgcf3ogm6fty")
+	TokenDanErin_InvalidSubjectCID    = cid.MustParse("bafyreicrfmlw4nqqk5t7j6r7ct3c7jlxeasyetb6fq3556vmtihcnbi54i")
 	TokenDanErin_InvalidSubjectSealed = mustGetBundle(TokenDanErin_InvalidSubjectCID).Sealed
 	TokenDanErin_InvalidSubjectBundle = mustGetBundle(TokenDanErin_InvalidSubjectCID)
 	TokenDanErin_InvalidSubject       = mustGetBundle(TokenDanErin_InvalidSubjectCID).Decoded
 )

 var (
-	TokenErinFrank_InvalidSubjectCID    = cid.MustParse("bafyreicr364mj3n7x4iyhcksxypelktcqkkw3ptg7ggxtqegw3p3mr6zc4")
+	TokenErinFrank_InvalidSubjectCID    = cid.MustParse("bafyreietx2sjsm72sbgjnosdnejwlqc5dadlolh2bjl6ifxdllslup7ecm")
 	TokenErinFrank_InvalidSubjectSealed = mustGetBundle(TokenErinFrank_InvalidSubjectCID).Sealed
 	TokenErinFrank_InvalidSubjectBundle = mustGetBundle(TokenErinFrank_InvalidSubjectCID)
 	TokenErinFrank_InvalidSubject       = mustGetBundle(TokenErinFrank_InvalidSubjectCID).Decoded
 )

 var (
-	TokenCarolDan_InvalidExpiredCID    = cid.MustParse("bafyreifyzm5jkx2sfu5awyndg3dn5zlg7sq5hssgfatafk62kiiilapnqe")
+	TokenCarolDan_InvalidExpiredCID    = cid.MustParse("bafyreifhdiem6r5fh3wwaa6uszqe5uashfwaastqjyvzssbiju4mravx3y")
 	TokenCarolDan_InvalidExpiredSealed = mustGetBundle(TokenCarolDan_InvalidExpiredCID).Sealed
 	TokenCarolDan_InvalidExpiredBundle = mustGetBundle(TokenCarolDan_InvalidExpiredCID)
 	TokenCarolDan_InvalidExpired       = mustGetBundle(TokenCarolDan_InvalidExpiredCID).Decoded
 )

 var (
-	TokenDanErin_InvalidExpiredCID    = cid.MustParse("bafyreihhnisabmkofuk3qaw37leijxqjaz5or6v2cufjxwzdkvuvv2dzbq")
+	TokenDanErin_InvalidExpiredCID    = cid.MustParse("bafyreiff7fqutstzz2ep5gzs2mqnt4rka7ezscrzpijyc4jjeopqm7oxxq")
 	TokenDanErin_InvalidExpiredSealed = mustGetBundle(TokenDanErin_InvalidExpiredCID).Sealed
 	TokenDanErin_InvalidExpiredBundle = mustGetBundle(TokenDanErin_InvalidExpiredCID)
 	TokenDanErin_InvalidExpired       = mustGetBundle(TokenDanErin_InvalidExpiredCID).Decoded
 )

 var (
-	TokenErinFrank_InvalidExpiredCID    = cid.MustParse("bafyreigeokaziviwm5kzmkpwesj3gta5k7zrd62x4a746fnrnkhvatwbna")
+	TokenErinFrank_InvalidExpiredCID    = cid.MustParse("bafyreigxfwcynzsy4v4po36s3mz5nf6mg4kpptw6rpld3sc3c3mthq4noa")
 	TokenErinFrank_InvalidExpiredSealed = mustGetBundle(TokenErinFrank_InvalidExpiredCID).Sealed
 	TokenErinFrank_InvalidExpiredBundle = mustGetBundle(TokenErinFrank_InvalidExpiredCID)
 	TokenErinFrank_InvalidExpired       = mustGetBundle(TokenErinFrank_InvalidExpiredCID).Decoded
 )

 var (
-	TokenCarolDan_InvalidInactiveCID    = cid.MustParse("bafyreicea5y2nvlitvxijkupeavtg23i7ktjk3uejnaquguurzptiabk4u")
+	TokenCarolDan_InvalidInactiveCID    = cid.MustParse("bafyreifw4j2mxg4bovuhihvnhqgln7m57lvajt6fza4x4jc7sncyh66wxm")
 	TokenCarolDan_InvalidInactiveSealed = mustGetBundle(TokenCarolDan_InvalidInactiveCID).Sealed
 	TokenCarolDan_InvalidInactiveBundle = mustGetBundle(TokenCarolDan_InvalidInactiveCID)
 	TokenCarolDan_InvalidInactive       = mustGetBundle(TokenCarolDan_InvalidInactiveCID).Decoded
 )

 var (
-	TokenDanErin_InvalidInactiveCID    = cid.MustParse("bafyreifsgqzkmxj2vexuts3z766mwcjreiisjg2jykyzf7tbj5sclutpvq")
+	TokenDanErin_InvalidInactiveCID    = cid.MustParse("bafyreigrrfefw4wvjitiheonigeldnem2loo4yp5cghdskteunuxyozkiq")
 	TokenDanErin_InvalidInactiveSealed = mustGetBundle(TokenDanErin_InvalidInactiveCID).Sealed
 	TokenDanErin_InvalidInactiveBundle = mustGetBundle(TokenDanErin_InvalidInactiveCID)
 	TokenDanErin_InvalidInactive       = mustGetBundle(TokenDanErin_InvalidInactiveCID).Decoded
 )

 var (
-	TokenErinFrank_InvalidInactiveCID    = cid.MustParse("bafyreifbfegon24c6dndiqyktahzs65vhyasrygbw7nhsvojn6distsdre")
+	TokenErinFrank_InvalidInactiveCID    = cid.MustParse("bafyreicdlvnc7iinl2eay3xc3yvtmwezifvfxywjud3defssstusngt6du")
 	TokenErinFrank_InvalidInactiveSealed = mustGetBundle(TokenErinFrank_InvalidInactiveCID).Sealed
 	TokenErinFrank_InvalidInactiveBundle = mustGetBundle(TokenErinFrank_InvalidInactiveCID)
 	TokenErinFrank_InvalidInactive       = mustGetBundle(TokenErinFrank_InvalidInactiveCID).Decoded
 )

 var (
-	TokenCarolDan_ValidExamplePolicyCID    = cid.MustParse("bafyreibtfrp2njnkjrcuhxd4ebaecmpcql5knek2h2j2fjzu2sij2tv6ei")
+	TokenCarolDan_ValidExamplePolicyCID    = cid.MustParse("bafyreidvi5y42befcnb2qud23yt5memf4itn2v6xmw7gvdpihbnanvgqly")
 	TokenCarolDan_ValidExamplePolicySealed = mustGetBundle(TokenCarolDan_ValidExamplePolicyCID).Sealed
 	TokenCarolDan_ValidExamplePolicyBundle = mustGetBundle(TokenCarolDan_ValidExamplePolicyCID)
 	TokenCarolDan_ValidExamplePolicy       = mustGetBundle(TokenCarolDan_ValidExamplePolicyCID).Decoded
 )

 var (
-	TokenDanErin_ValidExamplePolicyCID    = cid.MustParse("bafyreidxfwbkzujpu7ivulkc7b6ff4cpbzrkeklmxqvyhhmkmym5b45e2e")
+	TokenDanErin_ValidExamplePolicyCID    = cid.MustParse("bafyreid3mr53fjsntyyfbbzjx2n32d7atj3v4ztfufdkamrodm6kcjww64")
 	TokenDanErin_ValidExamplePolicySealed = mustGetBundle(TokenDanErin_ValidExamplePolicyCID).Sealed
 	TokenDanErin_ValidExamplePolicyBundle = mustGetBundle(TokenDanErin_ValidExamplePolicyCID)
 	TokenDanErin_ValidExamplePolicy       = mustGetBundle(TokenDanErin_ValidExamplePolicyCID).Decoded
 )

 var (
-	TokenErinFrank_ValidExamplePolicyCID    = cid.MustParse("bafyreiatkvtvgakqcrdk6vgrv7tbq5rbeiqct52ep4plcftp2agffjyvp4")
+	TokenErinFrank_ValidExamplePolicyCID    = cid.MustParse("bafyreiegytubdwqnl3gd7dddfmqhr4kyo4sb5446kjyqvvolk2wmwum6ae")
 	TokenErinFrank_ValidExamplePolicySealed = mustGetBundle(TokenErinFrank_ValidExamplePolicyCID).Sealed
 	TokenErinFrank_ValidExamplePolicyBundle = mustGetBundle(TokenErinFrank_ValidExamplePolicyCID)
 	TokenErinFrank_ValidExamplePolicy       = mustGetBundle(TokenErinFrank_ValidExamplePolicyCID).Decoded
 )

 var AllTokens = []*delegation.Token{
+	TokenAliceAlice,
+	TokenBobBob,
+	TokenCarolCarol,
+	TokenDanDan,
+	TokenErinErin,
+	TokenFrankFrank,
 	TokenAliceBob,
 	TokenBobCarol,
 	TokenCarolDan,
@@ -195,7 +243,13 @@ var AllTokens = []*delegation.Token{
 	TokenErinFrank_ValidExamplePolicy,
 }

-var AllBundles = []*delegation.Bundle{
+var AllBundles = []delegation.Bundle{
+	TokenAliceAliceBundle,
+	TokenBobBobBundle,
+	TokenCarolCarolBundle,
+	TokenDanDanBundle,
+	TokenErinErinBundle,
+	TokenFrankFrankBundle,
 	TokenAliceBobBundle,
 	TokenBobCarolBundle,
 	TokenCarolDanBundle,
@@ -222,6 +276,12 @@ var AllBundles = []*delegation.Bundle{
 }

 var cidToName = map[cid.Cid]string{
+	TokenAliceAliceCID:                       "TokenAliceAlice",
+	TokenBobBobCID:                           "TokenBobBob",
+	TokenCarolCarolCID:                       "TokenCarolCarol",
+	TokenDanDanCID:                           "TokenDanDan",
+	TokenErinErinCID:                         "TokenErinErin",
+	TokenFrankFrankCID:                       "TokenFrankFrank",
 	TokenAliceBobCID:                         "TokenAliceBob",
 	TokenBobCarolCID:                         "TokenBobCarol",
 	TokenCarolDanCID:                         "TokenCarolDan",
--- a/token/delegation/examples_test.go
+++ b/token/delegation/examples_test.go
@@ -8,12 +8,12 @@ import (
 	"fmt"
 	"time"

+	"github.com/MetaMask/go-did-it/didtest"
 	"github.com/ipfs/go-cid"
 	"github.com/ipld/go-ipld-prime"
 	"github.com/ipld/go-ipld-prime/codec/dagcbor"
 	"github.com/ipld/go-ipld-prime/codec/dagjson"

-	"github.com/ucan-wg/go-ucan/did/didtest"
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/pkg/policy"
 	"github.com/ucan-wg/go-ucan/pkg/policy/literal"
@@ -57,37 +57,37 @@ func ExampleNew() {

 	// Example output:
 	//
-	// issDid: did:key:z6MkvJPmEZZYbgiw1ouT1oouTsTFBHJSts9ophVsNgcRmYxU
+	// issDid: did:key:z6Mkf4WtCwPDtamsZvBJA4eSVcE7vZuRPy5Skm4HaoQv81i1
 	//
-	// CID (base58BTC): zdpuAsqfZkgg2jgZyob23sq1J9xwtf9PHgt1PsskVCMq7Vvxk
+	// CID (base58BTC): zdpuB1bzMdGAtzBej9ZBJbW3ppsjP2Cf9KZ8xMjdhUjaf3vz1
 	//
-	// DAG-CBOR (base64) out: 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
+	// DAG-CBOR (base64) out: 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
 	// Converted to DAG-JSON out:
 	//	[
 	//		{
 	//			"/": {
-	//				"bytes": "5rvl8uKmDVGvAVSt4m/0MGiXl9dZwljJJ9m2qHCoIB617l26UvMxyH5uvN9hM7ozfVATiq4mLhoGgm9IGnEEAg"
+	//				"bytes": "QhZTTb4U1rin/oLFre618Ol5/leaP758T6EkHYfQaNmFYad7yVTer8bbM1Zp2LxrV3eEYeWkHeL3F0V3zWC/CQ"
 	//			}
 	//		},
 	//		{
 	//			"h": {
 	//				"/": {
-	//					"bytes": "NO0BcQ"
+	//					"bytes": "NAHtAe0BE3E"
 	//				}
 	//			},
 	//			"ucan/dlg@1.0.0-rc.1": {
-	//				"aud": "did:key:z6Mkq5YmbJcTrPExNDi26imrTCpKhepjBFBSHqrBDN2ArPkv",
+	//				"aud": "did:key:z6MkjWFU8HtfMquWn5MEQ9r22zWqyCN1vazGw6g6pzciziNV",
 	//				"cmd": "/foo/bar",
-	//				"exp": 1728933098,
-	//				"iss": "did:key:z6MkhVFznPeR572rTK51UjoTNpnF8cxuWfPm9oBMPr7y8ABe",
+	//				"exp": 1753966683,
+	//				"iss": "did:key:z6Mkf4WtCwPDtamsZvBJA4eSVcE7vZuRPy5Skm4HaoQv81i1",
 	//				"meta": {
 	//					"baz": 123,
 	//					"foo": "bar"
 	//				},
-	//				"nbf": 1728929558,
+	//				"nbf": 1753963143,
 	//				"nonce": {
 	//					"/": {
-	//						"bytes": "u0HMgJ5Y+M84I/66"
+	//						"bytes": "drUPgMnvwu+xwD+G"
 	//					}
 	//				},
 	//				"pol": [
@@ -125,7 +125,7 @@ func ExampleNew() {
 	//						]
 	//					]
 	//				],
-	//				"sub": "did:key:z6MktA1uBdCpq4uJBqE9jjMiLyxZBg9a6xgPPKJjMqss6Zc2"
+	//				"sub": "did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC"
 	//			}
 	//		}
 	//	]
@@ -166,38 +166,36 @@ func ExampleRoot() {

 	// Example output:
 	//
-	// issDid: did:key:z6MknWJqz17Y4AfsXSJUFKomuBR4GTkViM7kJYutzTMkCyFF
-	//
 	// CID (base58BTC): zdpuAkwYz8nY7uU8j3F6wVTfFY1VEoExwvUAYBEwRWfTozddE
 	//
-	// DAG-CBOR (base64) out: 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
+	// DAG-CBOR (base64) out: 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
 	//
 	// Converted to DAG-JSON out:
 	//	[
 	//		{
 	//			"/": {
-	//				"bytes": "VpW67FJ+myNi+azvnw2jivuiqXTuMrDZI2Qdaa8jE1Oi3mkjnm7DyqSQGADcomcuDslMWKmJ+OIyvbPG5PtSAw"
+	//				"bytes": "TIXb2wnBByq/llaQ4RLoWTxheAwamCNo2sKL8SQJbq0EVRvdfUQDKNpuMVkvtyUR6tUdZlKv1BcXjfGEaF2XAA"
 	//			}
 	//		},
 	//		{
 	//			"h": {
 	//				"/": {
-	//					"bytes": "NO0BcQ"
+	//					"bytes": "NAHtAe0BE3E"
 	//				}
 	//			},
 	//			"ucan/dlg@1.0.0-rc.1": {
-	//				"aud": "did:key:z6MkvJPmEZZYbgiw1ouT1oouTsTFBHJSts9ophVsNgcRmYxU",
+	//				"aud": "did:key:z6Mkf4WtCwPDtamsZvBJA4eSVcE7vZuRPy5Skm4HaoQv81i1",
 	//				"cmd": "/foo/bar",
-	//				"exp": 1732568424,
-	//				"iss": "did:key:z6Mkuukk2skDXLQn7NK3Eh9jMndYfvDBxxktgpidJAqb7M3p",
+	//				"exp": 1753966461,
+	//				"iss": "did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC",
 	//				"meta": {
 	//					"baz": 123,
 	//					"foo": "bar"
 	//				},
-	//				"nbf": 1732564884,
+	//				"nbf": 1753962921,
 	//				"nonce": {
 	//					"/": {
-	//						"bytes": "wzDc03WBciJIGPWG"
+	//						"bytes": "bHBuMcpx6+3l1nRe"
 	//					}
 	//				},
 	//				"pol": [
@@ -235,7 +233,7 @@ func ExampleRoot() {
 	//						]
 	//					]
 	//				],
-	//				"sub": "did:key:z6Mkuukk2skDXLQn7NK3Eh9jMndYfvDBxxktgpidJAqb7M3p"
+	//				"sub": "did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC"
 	//			}
 	//		}
 	//	]
@@ -244,7 +242,7 @@ func ExampleRoot() {
 // The following example demonstrates how to get a delegation.Token from
 // a DAG-CBOR []byte.
 func ExampleFromSealed() {
-	const cborBase64 = "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"
+	const cborBase64 = "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"

 	cborBytes, err := base64.StdEncoding.DecodeString(cborBase64)
 	printThenPanicOnErr(err)
@@ -264,10 +262,10 @@ func ExampleFromSealed() {
 	fmt.Println("Expiration (exp):", tkn.Expiration())

 	// Output:
-	// CID (base58BTC): zdpuAw26pFuvZa2Z9YAtpZZnWN6VmnRFr7Z8LVY5c7RVWoxGY
-	// Issuer (iss): did:key:z6Mkpzn2n3ZGT2VaqMGSQC3tzmzV4TS9S71iFsDXE1WnoNH2
-	// Audience (aud): did:key:z6Mkq5YmbJcTrPExNDi26imrTCpKhepjBFBSHqrBDN2ArPkv
-	// Subject (sub): did:key:z6MktA1uBdCpq4uJBqE9jjMiLyxZBg9a6xgPPKJjMqss6Zc2
+	// CID (base58BTC): zdpuAsgmtmC849BEApGCJm2fTSzwtHiAqQnuJCMBBBCbFiadd
+	// Issuer (iss): did:key:z6Mkf4WtCwPDtamsZvBJA4eSVcE7vZuRPy5Skm4HaoQv81i1
+	// Audience (aud): did:key:z6MkjWFU8HtfMquWn5MEQ9r22zWqyCN1vazGw6g6pzciziNV
+	// Subject (sub): did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC
 	// Command (cmd): /foo/bar
 	// Policy (pol): [
 	//   ["==", ".status", "draft"],
@@ -281,7 +279,7 @@ func ExampleFromSealed() {
 	//     ]]
 	//   ]
 	// ]
-	// Nonce (nonce): 000102030405060708090a0b
+	// Nonce (nonce): 35490e43b72d54ca9e1c4a2b
 	// Meta (meta): {}
 	// NotBefore (nbf): <nil>
 	// Expiration (exp): <nil>
--- a/token/delegation/interop_test.go
+++ b/token/delegation/interop_test.go
@@ -0,0 +1,108 @@
+package delegation
+
+import (
+	_ "embed"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"testing"
+
+	"github.com/MetaMask/go-did-it/crypto"
+	"github.com/MetaMask/go-did-it/crypto/ed25519"
+	"github.com/multiformats/go-varint"
+	"github.com/stretchr/testify/require"
+)
+
+// This comes from https://github.com/ucan-wg/spec/blob/main/fixtures/1.0.0/delegation.json
+//
+//go:embed testdata/interop_delegation.json
+var interopDelegation []byte
+
+type interop struct {
+	Version    string            `json:"version"`
+	Comments   string            `json:"comments"`
+	Principals map[string]string `json:"principals"`
+	Valid      []validTestCase   `json:"valid"`
+}
+
+type validTestCase struct {
+	Name     string       `json:"name"`
+	Token    string       `json:"token"`
+	CID      string       `json:"cid"`
+	Envelope envelopeData `json:"envelope"`
+}
+
+type envelopeData struct {
+	Payload   payloadData `json:"payload"`
+	Signature string      `json:"signature"`
+	Algorithm string      `json:"alg"`
+	Encoding  string      `json:"enc"`
+	Spec      string      `json:"spec"`
+	Version   string      `json:"version"`
+}
+
+type payloadData struct {
+	Issuer    string          `json:"iss"`
+	Audience  string          `json:"aud"`
+	Subject   string          `json:"sub"`
+	Command   string          `json:"cmd"`
+	Policies  json.RawMessage `json:"pol"`
+	ExpiresAt int64           `json:"exp"`
+	Nonce     string          `json:"nonce"`
+}
+
+func TestInterop(t *testing.T) {
+	var testData interop
+	err := json.Unmarshal(interopDelegation, &testData)
+	require.NoError(t, err)
+
+	require.Equal(t, "1.0.0-rc.1", testData.Version)
+
+	// alice, err := decodeKey(testData.Principals["alice"])
+	// require.NoError(t, err)
+	// bob, err := decodeKey(testData.Principals["bob"])
+	// require.NoError(t, err)
+	// carol, err := decodeKey(testData.Principals["carol"])
+	// require.NoError(t, err)
+
+	t.Run("valid", func(t *testing.T) {
+		for _, tc := range testData.Valid {
+			t.Run(tc.Name, func(t *testing.T) {
+				dlgBytes, err := base64.StdEncoding.DecodeString(tc.Token)
+				require.NoError(t, err)
+
+				dlg, c, err := FromSealed(dlgBytes)
+				require.NoError(t, err)
+				require.Equal(t, tc.CID, c.String())
+
+				require.Equal(t, tc.Envelope.Payload.Issuer, dlg.Issuer().String())
+				require.Equal(t, tc.Envelope.Payload.Audience, dlg.Audience().String())
+				require.Equal(t, tc.Envelope.Payload.Subject, dlg.Subject().String())
+				require.Equal(t, tc.Envelope.Payload.Command, dlg.Command().String())
+				require.Equal(t, tc.Envelope.Payload.Command, dlg.Command().String())
+				require.JSONEq(t, string(tc.Envelope.Payload.Policies), dlg.Policy().String())
+				require.Equal(t, tc.Envelope.Payload.ExpiresAt, dlg.expiration.Unix())
+				nonceBytes, err := base64.StdEncoding.DecodeString(tc.Envelope.Payload.Nonce)
+				require.NoError(t, err)
+				require.Equal(t, nonceBytes, dlg.Nonce())
+			})
+		}
+	})
+}
+
+func decodeKey(key string) (crypto.PrivateKeySigningBytes, error) {
+	bytes, err := base64.StdEncoding.DecodeString(key)
+	if err != nil {
+		return nil, err
+	}
+
+	code, read, err := varint.FromUvarint(bytes)
+	if err != nil {
+		return nil, err
+	}
+	if code != 0x1300 {
+		return nil, fmt.Errorf("invalid varint code: %d", code)
+	}
+
+	return ed25519.PrivateKeyFromSeed(bytes[read:])
+}
--- a/token/delegation/ipld.go
+++ b/token/delegation/ipld.go
@@ -1,25 +1,24 @@
 package delegation

 import (
-	"fmt"
 	"io"

+	"github.com/MetaMask/go-did-it"
+	"github.com/MetaMask/go-did-it/crypto"
 	"github.com/ipfs/go-cid"
 	"github.com/ipld/go-ipld-prime"
 	"github.com/ipld/go-ipld-prime/codec"
 	"github.com/ipld/go-ipld-prime/codec/dagcbor"
 	"github.com/ipld/go-ipld-prime/codec/dagjson"
 	"github.com/ipld/go-ipld-prime/datamodel"
-	"github.com/libp2p/go-libp2p/core/crypto"

-	"github.com/ucan-wg/go-ucan/did"
 	"github.com/ucan-wg/go-ucan/token/internal/envelope"
 )

 // ToSealed wraps the delegation token in an envelope, generates the
 // signature, encodes the result to DAG-CBOR and calculates the CID of
 // the resulting binary data.
-func (t *Token) ToSealed(privKey crypto.PrivKey) ([]byte, cid.Cid, error) {
+func (t *Token) ToSealed(privKey crypto.PrivateKeySigningBytes) ([]byte, cid.Cid, error) {
 	data, err := t.ToDagCbor(privKey)
 	if err != nil {
 		return nil, cid.Undef, err
@@ -34,7 +33,7 @@ func (t *Token) ToSealed(privKey crypto.PrivKey) ([]byte, cid.Cid, error) {
 }

 // ToSealedWriter is the same as ToSealed but accepts an io.Writer.
-func (t *Token) ToSealedWriter(w io.Writer, privKey crypto.PrivKey) (cid.Cid, error) {
+func (t *Token) ToSealedWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes) (cid.Cid, error) {
 	cidWriter := envelope.NewCIDWriter(w)

 	if err := t.ToDagCborWriter(cidWriter, privKey); err != nil {
@@ -48,8 +47,8 @@ func (t *Token) ToSealedWriter(w io.Writer, privKey crypto.PrivKey) (cid.Cid, er
 // verifies that the envelope's signature is correct based on the public
 // key taken from the issuer (iss) field and calculates the CID of the
 // incoming data.
-func FromSealed(data []byte) (*Token, cid.Cid, error) {
-	tkn, err := FromDagCbor(data)
+func FromSealed(data []byte, resolvOpts ...did.ResolutionOption) (*Token, cid.Cid, error) {
+	tkn, err := FromDagCbor(data, resolvOpts...)
 	if err != nil {
 		return nil, cid.Undef, err
 	}
@@ -63,10 +62,10 @@ func FromSealed(data []byte) (*Token, cid.Cid, error) {
 }

 // FromSealedReader is the same as Unseal but accepts an io.Reader.
-func FromSealedReader(r io.Reader) (*Token, cid.Cid, error) {
+func FromSealedReader(r io.Reader, resolvOpts ...did.ResolutionOption) (*Token, cid.Cid, error) {
 	cidReader := envelope.NewCIDReader(r)

-	tkn, err := FromDagCborReader(cidReader)
+	tkn, err := FromDagCborReader(cidReader, resolvOpts...)
 	if err != nil {
 		return nil, cid.Undef, err
 	}
@@ -81,7 +80,7 @@ func FromSealedReader(r io.Reader) (*Token, cid.Cid, error) {

 // Encode marshals a Token to the format specified by the provided
 // codec.Encoder.
-func (t *Token) Encode(privKey crypto.PrivKey, encFn codec.Encoder) ([]byte, error) {
+func (t *Token) Encode(privKey crypto.PrivateKeySigningBytes, encFn codec.Encoder) ([]byte, error) {
 	node, err := t.toIPLD(privKey)
 	if err != nil {
 		return nil, err
@@ -91,7 +90,7 @@ func (t *Token) Encode(privKey crypto.PrivKey, encFn codec.Encoder) ([]byte, err
 }

 // EncodeWriter is the same as Encode, but accepts an io.Writer.
-func (t *Token) EncodeWriter(w io.Writer, privKey crypto.PrivKey, encFn codec.Encoder) error {
+func (t *Token) EncodeWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes, encFn codec.Encoder) error {
 	node, err := t.toIPLD(privKey)
 	if err != nil {
 		return err
@@ -101,22 +100,22 @@ func (t *Token) EncodeWriter(w io.Writer, privKey crypto.PrivKey, encFn codec.En
 }

 // ToDagCbor marshals the Token to the DAG-CBOR format.
-func (t *Token) ToDagCbor(privKey crypto.PrivKey) ([]byte, error) {
+func (t *Token) ToDagCbor(privKey crypto.PrivateKeySigningBytes) ([]byte, error) {
 	return t.Encode(privKey, dagcbor.Encode)
 }

 // ToDagCborWriter is the same as ToDagCbor, but it accepts an io.Writer.
-func (t *Token) ToDagCborWriter(w io.Writer, privKey crypto.PrivKey) error {
+func (t *Token) ToDagCborWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes) error {
 	return t.EncodeWriter(w, privKey, dagcbor.Encode)
 }

 // ToDagJson marshals the Token to the DAG-JSON format.
-func (t *Token) ToDagJson(privKey crypto.PrivKey) ([]byte, error) {
+func (t *Token) ToDagJson(privKey crypto.PrivateKeySigningBytes) ([]byte, error) {
 	return t.Encode(privKey, dagjson.Encode)
 }

 // ToDagJsonWriter is the same as ToDagJson, but it accepts an io.Writer.
-func (t *Token) ToDagJsonWriter(w io.Writer, privKey crypto.PrivKey) error {
+func (t *Token) ToDagJsonWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes) error {
 	return t.EncodeWriter(w, privKey, dagjson.Encode)
 }

@@ -125,29 +124,29 @@ func (t *Token) ToDagJsonWriter(w io.Writer, privKey crypto.PrivKey) error {
 //
 // An error is returned if the conversion fails, or if the resulting
 // Token is invalid.
-func Decode(b []byte, decFn codec.Decoder) (*Token, error) {
+func Decode(b []byte, decFn codec.Decoder, resolvOpts ...did.ResolutionOption) (*Token, error) {
 	node, err := ipld.Decode(b, decFn)
 	if err != nil {
 		return nil, err
 	}
-	return FromIPLD(node)
+	return FromIPLD(node, resolvOpts...)
 }

 // DecodeReader is the same as Decode, but accept an io.Reader.
-func DecodeReader(r io.Reader, decFn codec.Decoder) (*Token, error) {
+func DecodeReader(r io.Reader, decFn codec.Decoder, resolvOpts ...did.ResolutionOption) (*Token, error) {
 	node, err := ipld.DecodeStreaming(r, decFn)
 	if err != nil {
 		return nil, err
 	}
-	return FromIPLD(node)
+	return FromIPLD(node, resolvOpts...)
 }

 // FromDagCbor unmarshals the input data into a Token.
 //
 // An error is returned if the conversion fails, or if the resulting
 // Token is invalid.
-func FromDagCbor(data []byte) (*Token, error) {
-	pay, err := envelope.FromDagCbor[*tokenPayloadModel](data)
+func FromDagCbor(data []byte, resolvOpts ...did.ResolutionOption) (*Token, error) {
+	pay, err := envelope.FromDagCbor[*tokenPayloadModel](data, resolvOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -161,26 +160,26 @@ func FromDagCbor(data []byte) (*Token, error) {
 }

 // FromDagCborReader is the same as FromDagCbor, but accept an io.Reader.
-func FromDagCborReader(r io.Reader) (*Token, error) {
-	return DecodeReader(r, dagcbor.Decode)
+func FromDagCborReader(r io.Reader, resolvOpts ...did.ResolutionOption) (*Token, error) {
+	return DecodeReader(r, dagcbor.Decode, resolvOpts...)
 }

 // FromDagJson unmarshals the input data into a Token.
 //
 // An error is returned if the conversion fails, or if the resulting
 // Token is invalid.
-func FromDagJson(data []byte) (*Token, error) {
-	return Decode(data, dagjson.Decode)
+func FromDagJson(data []byte, resolvOpts ...did.ResolutionOption) (*Token, error) {
+	return Decode(data, dagjson.Decode, resolvOpts...)
 }

 // FromDagJsonReader is the same as FromDagJson, but accept an io.Reader.
-func FromDagJsonReader(r io.Reader) (*Token, error) {
-	return DecodeReader(r, dagjson.Decode)
+func FromDagJsonReader(r io.Reader, resolvOpts ...did.ResolutionOption) (*Token, error) {
+	return DecodeReader(r, dagjson.Decode, resolvOpts...)
 }

 // FromIPLD decode the given IPLD representation into a Token.
-func FromIPLD(node datamodel.Node) (*Token, error) {
-	pay, err := envelope.FromIPLD[*tokenPayloadModel](node)
+func FromIPLD(node datamodel.Node, resolvOpts ...did.ResolutionOption) (*Token, error) {
+	pay, err := envelope.FromIPLD[*tokenPayloadModel](node, resolvOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -193,18 +192,9 @@ func FromIPLD(node datamodel.Node) (*Token, error) {
 	return tkn, err
 }

-func (t *Token) toIPLD(privKey crypto.PrivKey) (datamodel.Node, error) {
-	// sanity check that privKey and issuer are matching
-	issPub, err := t.issuer.PubKey()
-	if err != nil {
-		return nil, err
-	}
-	if !issPub.Equals(privKey.GetPublic()) {
-		return nil, fmt.Errorf("private key doesn't match the issuer")
-	}
-
+func (t *Token) toIPLD(privKey crypto.PrivateKeySigningBytes) (datamodel.Node, error) {
 	var sub *string
-	if t.subject != did.Undef {
+	if t.subject != nil {
 		s := t.subject.String()
 		sub = &s
 	}
--- a/token/delegation/schema.go
+++ b/token/delegation/schema.go
@@ -14,10 +14,10 @@ import (
 	"github.com/ucan-wg/go-ucan/token/internal/envelope"
 )

-// [Tag] is the string used as a key within the SigPayload that identifies
+// Tag is the string used as a key within the SigPayload that identifies
 // that the TokenPayload is a delegation.
 //
-// [Tag]: https://github.com/ucan-wg/delegation/tree/v1_ipld#type-tag
+// See: https://github.com/ucan-wg/delegation/tree/v1_ipld#type-tag
 const Tag = "ucan/dlg@1.0.0-rc.1"

 // TODO: update the above Tag URL once the delegation specification is merged.
--- a/token/delegation/schema_test.go
+++ b/token/delegation/schema_test.go
@@ -5,12 +5,11 @@ import (
 	_ "embed"
 	"testing"

+	"github.com/MetaMask/go-did-it/didtest"
 	"github.com/ipld/go-ipld-prime"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"gotest.tools/v3/golden"

-	"github.com/ucan-wg/go-ucan/did/didtest"
 	"github.com/ucan-wg/go-ucan/token/delegation"
 	"github.com/ucan-wg/go-ucan/token/internal/envelope"
 )
@@ -21,7 +20,6 @@ var schemaBytes []byte
 func TestSchemaRoundTrip(t *testing.T) {
 	t.Parallel()

-	delegationJson := golden.Get(t, "new.dagjson")
 	privKey := didtest.PersonaAlice.PrivKey()

 	t.Run("via buffers", func(t *testing.T) {
@@ -30,7 +28,7 @@ func TestSchemaRoundTrip(t *testing.T) {
 		// format:    dagJson   -->   PayloadModel   -->   dagCbor   -->   PayloadModel   -->   dagJson
 		// function:      DecodeDagJson()           Seal()        Unseal()          EncodeDagJson()

-		p1, err := delegation.FromDagJson(delegationJson)
+		p1, err := delegation.FromDagJson(newDagJson)
 		require.NoError(t, err)

 		_, newCID, err := p1.ToSealed(privKey)
@@ -47,13 +45,13 @@ func TestSchemaRoundTrip(t *testing.T) {
 		readJson, err := p2.ToDagJson(privKey)
 		require.NoError(t, err)

-		assert.JSONEq(t, string(delegationJson), string(readJson))
+		assert.JSONEq(t, string(newDagJson), string(readJson))
 	})

 	t.Run("via streaming", func(t *testing.T) {
 		t.Parallel()

-		buf := bytes.NewBuffer(delegationJson)
+		buf := bytes.NewBuffer(newDagJson)

 		// format:    dagJson   -->   PayloadModel   -->   dagCbor   -->   PayloadModel   -->   dagJson
 		// function:      DecodeDagJson()           Seal()         Unseal()         EncodeDagJson()
@@ -77,17 +75,7 @@ func TestSchemaRoundTrip(t *testing.T) {
 		readJson := &bytes.Buffer{}
 		require.NoError(t, p2.ToDagJsonWriter(readJson, privKey))

-		assert.JSONEq(t, string(delegationJson), readJson.String())
-	})
-
-	t.Run("fails with wrong PrivKey", func(t *testing.T) {
-		t.Parallel()
-
-		p1, err := delegation.FromDagJson(delegationJson)
-		require.NoError(t, err)
-
-		_, _, err = p1.ToSealed(didtest.PersonaBob.PrivKey())
-		require.EqualError(t, err, "private key doesn't match the issuer")
+		assert.JSONEq(t, string(newDagJson), readJson.String())
 	})
 }

@@ -99,11 +87,10 @@ func BenchmarkSchemaLoad(b *testing.B) {
 }

 func BenchmarkRoundTrip(b *testing.B) {
-	delegationJson := golden.Get(b, "new.dagjson")
 	privKey := didtest.PersonaAlice.PrivKey()

 	b.Run("via buffers", func(b *testing.B) {
-		p1, _ := delegation.FromDagJson(delegationJson)
+		p1, _ := delegation.FromDagJson(newDagJson)
 		cborBytes, _, _ := p1.ToSealed(privKey)
 		p2, _, _ := delegation.FromSealed(cborBytes)

@@ -112,7 +99,7 @@ func BenchmarkRoundTrip(b *testing.B) {
 		b.Run("FromDagJson", func(b *testing.B) {
 			b.ReportAllocs()
 			for i := 0; i < b.N; i++ {
-				_, _ = delegation.FromDagJson(delegationJson)
+				_, _ = delegation.FromDagJson(newDagJson)
 			}
 		})

@@ -139,7 +126,7 @@ func BenchmarkRoundTrip(b *testing.B) {
 	})

 	b.Run("via streaming", func(b *testing.B) {
-		p1, _ := delegation.FromDagJsonReader(bytes.NewReader(delegationJson))
+		p1, _ := delegation.FromDagJsonReader(bytes.NewReader(newDagJson))
 		cborBuf := &bytes.Buffer{}
 		_, _ = p1.ToSealedWriter(cborBuf, privKey)
 		cborBytes := cborBuf.Bytes()
@@ -149,7 +136,7 @@ func BenchmarkRoundTrip(b *testing.B) {

 		b.Run("FromDagJsonReader", func(b *testing.B) {
 			b.ReportAllocs()
-			reader := bytes.NewReader(delegationJson)
+			reader := bytes.NewReader(newDagJson)
 			for i := 0; i < b.N; i++ {
 				_, _ = reader.Seek(0, 0)
 				_, _ = delegation.FromDagJsonReader(reader)
--- a/token/delegation/testdata/interop_delegation.json
+++ b/token/delegation/testdata/interop_delegation.json
@@ -0,0 +1,32 @@
+{
+	"version": "1.0.0-rc.1",
+	"comments": "Principals private keys encoded as base64pad(varint(0x1300) + privateKey) and all other binary fields are encoded as base64pad.",
+	"principals": {
+		"carol": "gCZC43QGw7ZvYQuKTtBwBy+tdjYrKf0hXU3dd+J0HON5dw==",
+		"bob": "gCZfj9+RzU2U518TMBNK/fjdGQz34sB4iKE6z+9lQDpCIQ==",
+		"alice": "gCa9UfZv+yI5/rvUIt21DaGI7EZJlzFO1uDc5AyJ30c6/w=="
+	},
+	"valid": [
+		{
+			"name": "basic delegation bob > carol",
+			"token": "glhAd7jvZs44lTWmjSG/PWBRXvAdJA6Pq0fj86WQOVBYSw3fLrpjF7OMvjUlTynZZblPHzFsiBeBlUqtbCAHvhppCaJhaEg0Ae0B7QETcXN1Y2FuL2RsZ0AxLjAuMC1yYy4xp2NhdWR4OGRpZDprZXk6ejZNa21KY2VWb1FTSHM0NWNSZUVYb0x0V20xd29zQ0c4Ukx4Zkt3aHhvcXpvVGtDY2NtZGgvYWNjb3VudGNleHAaaIIMsWNpc3N4OGRpZDprZXk6ejZNa21UOWo2ZlZacXpYVjh1MndWVlN1NDlnWVNSWUdTUW5kdVdYRjZmb0FKcnF6Y3BvbIBjc3VieDhkaWQ6a2V5Ono2TWttVDlqNmZWWnF6WFY4dTJ3VlZTdTQ5Z1lTUllHU1FuZHVXWEY2Zm9BSnJxemVub25jZUwnbSv2keQn/Kg2KsM=",
+			"cid": "bafyreifqsojs54lpxxyx5xfqxiwkc4paglcyqd7vjzrcyapxi557extz6m",
+			"envelope": {
+				"payload": {
+					"iss": "did:key:z6MkmT9j6fVZqzXV8u2wVVSu49gYSRYGSQnduWXF6foAJrqz",
+					"aud": "did:key:z6MkmJceVoQSHs45cReEXoLtWm1wosCG8RLxfKwhxoqzoTkC",
+					"sub": "did:key:z6MkmT9j6fVZqzXV8u2wVVSu49gYSRYGSQnduWXF6foAJrqz",
+					"cmd": "/account",
+					"pol": [],
+					"exp": 1753353393,
+					"nonce": "J20r9pHkJ/yoNirD"
+				},
+				"signature": "d7jvZs44lTWmjSG/PWBRXvAdJA6Pq0fj86WQOVBYSw3fLrpjF7OMvjUlTynZZblPHzFsiBeBlUqtbCAHvhppCQ==",
+				"alg": "Ed25519",
+				"enc": "DAG-CBOR",
+				"spec": "dlg",
+				"version": "1.0.0-rc.1"
+			}
+		}
+	]
+}
--- a/token/delegation/testdata/new.dagjson
+++ b/token/delegation/testdata/new.dagjson
@@ -1 +1 @@
-[{"/":{"bytes":"YJsl8EMLnXSFE/nKKjMxz9bHHo+Y7QeLEzukEzW1TB+m53TTiY1aOt+qUO8JaTcOKsOHt/a4Vn+YiOd5CkLdAQ"}},{"h":{"/":{"bytes":"NO0BcQ"}},"ucan/dlg@1.0.0-rc.1":{"aud":"did:key:z6MkvJPmEZZYbgiw1ouT1oouTsTFBHJSts9ophVsNgcRmYxU","cmd":"/foo/bar","exp":7258118400,"iss":"did:key:z6Mkuukk2skDXLQn7NK3Eh9jMndYfvDBxxktgpidJAqb7M3p","meta":{"bar":"barr","foo":"fooo"},"nonce":{"/":{"bytes":"NnJvRGhHaTBraU5yaVFBejdKM2QrYk9lb0kvdGo4RU5pa21RTmJ0am5EMA"}},"pol":[["==",".status","draft"],["all",".reviewer",["like",".email","*@example.com"]],["any",".tags",["or",[["==",".","news"],["==",".","press"]]]]],"sub":"did:key:z6Mkgupchh5HwuHahS7YsyE8bLua1Mr8p2iKNRhyvSvRAs9n"}}]
+[{"/":{"bytes":"7Df/QlkgvQ/j1sr2NUFryQbTxo16rsOPfDPX8evBmA0hV6Omv+sScM8HC30KHr/kXCl+DzxDg+/EOwiZ9ApNBQ"}},{"h":{"/":{"bytes":"NAHtAe0BE3E"}},"ucan/dlg@1.0.0-rc.1":{"aud":"did:key:z6Mkf4WtCwPDtamsZvBJA4eSVcE7vZuRPy5Skm4HaoQv81i1","cmd":"/foo/bar","exp":7258118400,"iss":"did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC","meta":{"bar":"barr","foo":"fooo"},"nonce":{"/":{"bytes":"NnJvRGhHaTBraU5yaVFBejdKM2QrYk9lb0kvdGo4RU5pa21RTmJ0am5EMA"}},"pol":[["==",".status","draft"],["all",".reviewer",["like",".email","*@example.com"]],["any",".tags",["or",[["==",".","news"],["==",".","press"]]]]],"sub":"did:key:z6MkjWFU8HtfMquWn5MEQ9r22zWqyCN1vazGw6g6pzciziNV"}}]
--- a/token/delegation/testdata/powerline.dagjson
+++ b/token/delegation/testdata/powerline.dagjson
@@ -1 +1 @@
-[{"/":{"bytes":"i3YkPDvNSU4V8XYEluZhLH0b+NDcW/6+PtPSUHC17cmXXqgelG0K4EzWQQkS9UsYCHfkZSCn9NjGSXYMMFhaAQ"}},{"h":{"/":{"bytes":"NO0BcQ"}},"ucan/dlg@1.0.0-rc.1":{"aud":"did:key:z6MkvJPmEZZYbgiw1ouT1oouTsTFBHJSts9ophVsNgcRmYxU","cmd":"/foo/bar","exp":7258118400,"iss":"did:key:z6Mkuukk2skDXLQn7NK3Eh9jMndYfvDBxxktgpidJAqb7M3p","meta":{"bar":"barr","foo":"fooo"},"nonce":{"/":{"bytes":"NnJvRGhHaTBraU5yaVFBejdKM2QrYk9lb0kvdGo4RU5pa21RTmJ0am5EMA"}},"pol":[["==",".status","draft"],["all",".reviewer",["like",".email","*@example.com"]],["any",".tags",["or",[["==",".","news"],["==",".","press"]]]]]}}]
+[{"/":{"bytes":"pcdEo4gSPlBWE1kQUUjFOQNRLvXDw6BTLmgoIrU/o1JCAeSYiiIQFrHB1KIm0phZfMHqp5O6k6QxHuldxUARBQ"}},{"h":{"/":{"bytes":"NAHtAe0BE3E"}},"ucan/dlg@1.0.0-rc.1":{"aud":"did:key:z6Mkf4WtCwPDtamsZvBJA4eSVcE7vZuRPy5Skm4HaoQv81i1","cmd":"/foo/bar","exp":7258118400,"iss":"did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC","meta":{"bar":"barr","foo":"fooo"},"nonce":{"/":{"bytes":"NnJvRGhHaTBraU5yaVFBejdKM2QrYk9lb0kvdGo4RU5pa21RTmJ0am5EMA"}},"pol":[["==",".status","draft"],["all",".reviewer",["like",".email","*@example.com"]],["any",".tags",["or",[["==",".","news"],["==",".","press"]]]]]}}]
--- a/token/delegation/testdata/root.dagjson
+++ b/token/delegation/testdata/root.dagjson
@@ -1 +1 @@
-[{"/":{"bytes":"BBabgnWqd+cjwG1td0w9BudNocmUwoR89RMZTqZHk3osCXEI/bOkko0zTvlusaE4EMBBeSzZDKzjvunLBfdiBg"}},{"h":{"/":{"bytes":"NO0BcQ"}},"ucan/dlg@1.0.0-rc.1":{"aud":"did:key:z6MkvJPmEZZYbgiw1ouT1oouTsTFBHJSts9ophVsNgcRmYxU","cmd":"/foo/bar","exp":7258118400,"iss":"did:key:z6Mkuukk2skDXLQn7NK3Eh9jMndYfvDBxxktgpidJAqb7M3p","meta":{"bar":"barr","foo":"fooo"},"nonce":{"/":{"bytes":"NnJvRGhHaTBraU5yaVFBejdKM2QrYk9lb0kvdGo4RU5pa21RTmJ0am5EMA"}},"pol":[["==",".status","draft"],["all",".reviewer",["like",".email","*@example.com"]],["any",".tags",["or",[["==",".","news"],["==",".","press"]]]]],"sub":"did:key:z6Mkuukk2skDXLQn7NK3Eh9jMndYfvDBxxktgpidJAqb7M3p"}}]
+[{"/":{"bytes":"jS5WzBU0JybWoQAJjJTgxke5U7vbwOJTYbe3bipYbmhz3Lcrl1B/68dK4xhWSv6wc3zZqXFJ7/Kw2jDLCOZWDA"}},{"h":{"/":{"bytes":"NAHtAe0BE3E"}},"ucan/dlg@1.0.0-rc.1":{"aud":"did:key:z6Mkf4WtCwPDtamsZvBJA4eSVcE7vZuRPy5Skm4HaoQv81i1","cmd":"/foo/bar","exp":7258118400,"iss":"did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC","meta":{"bar":"barr","foo":"fooo"},"nonce":{"/":{"bytes":"NnJvRGhHaTBraU5yaVFBejdKM2QrYk9lb0kvdGo4RU5pa21RTmJ0am5EMA"}},"pol":[["==",".status","draft"],["all",".reviewer",["like",".email","*@example.com"]],["any",".tags",["or",[["==",".","news"],["==",".","press"]]]]],"sub":"did:key:z6MknUz1mSj4pvS6aUUHekCHdUPv7HBhDyDBZQ2W3Vujc5qC"}}]
--- a/token/delegation/utilities.go
+++ b/token/delegation/utilities.go
@@ -16,7 +16,7 @@ type Loader interface {
 	GetDelegation(cid cid.Cid) (*Token, error)
 }

-// Bundle carries together a decoded delegation with its Cid and raw signed data.
+// Bundle carries together a decoded token with its Cid and raw signed data.
 type Bundle struct {
 	Cid     cid.Cid
 	Decoded *Token
--- a/token/interface.go
+++ b/token/interface.go
@@ -4,9 +4,9 @@ import (
 	"io"
 	"time"

+	"github.com/MetaMask/go-did-it/crypto"
 	"github.com/ipfs/go-cid"
 	"github.com/ipld/go-ipld-prime/codec"
-	"github.com/libp2p/go-libp2p/core/crypto"
 )

 type Token interface {
@@ -15,7 +15,7 @@ type Token interface {
 	// IsValidNow verifies that the token can be used at the current time, based on expiration or "not before" fields.
 	// This does NOT do any other kind of verifications.
 	IsValidNow() bool
-	// IsValidNow verifies that the token can be used at the given time, based on expiration or "not before" fields.
+	// IsValidAt verifies that the token can be used at the given time, based on expiration or "not before" fields.
 	// This does NOT do any other kind of verifications.
 	IsValidAt(t time.Time) bool
 }
@@ -23,19 +23,26 @@ type Token interface {
 type Marshaller interface {
 	// ToSealed wraps the token in an envelope, generates the signature, encodes
 	// the result to DAG-CBOR and calculates the CID of the resulting binary data.
-	ToSealed(privKey crypto.PrivKey) ([]byte, cid.Cid, error)
+	ToSealed(privKey crypto.PrivateKeySigningBytes) ([]byte, cid.Cid, error)
 	// ToSealedWriter is the same as ToSealed but accepts an io.Writer.
-	ToSealedWriter(w io.Writer, privKey crypto.PrivKey) (cid.Cid, error)
+	ToSealedWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes) (cid.Cid, error)
 	// Encode marshals a Token to the format specified by the provided codec.Encoder.
-	Encode(privKey crypto.PrivKey, encFn codec.Encoder) ([]byte, error)
+	Encode(privKey crypto.PrivateKeySigningBytes, encFn codec.Encoder) ([]byte, error)
 	// EncodeWriter is the same as Encode, but accepts an io.Writer.
-	EncodeWriter(w io.Writer, privKey crypto.PrivKey, encFn codec.Encoder) error
+	EncodeWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes, encFn codec.Encoder) error
 	// ToDagCbor marshals the Token to the DAG-CBOR format.
-	ToDagCbor(privKey crypto.PrivKey) ([]byte, error)
+	ToDagCbor(privKey crypto.PrivateKeySigningBytes) ([]byte, error)
 	// ToDagCborWriter is the same as ToDagCbor, but it accepts an io.Writer.
-	ToDagCborWriter(w io.Writer, privKey crypto.PrivKey) error
+	ToDagCborWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes) error
 	// ToDagJson marshals the Token to the DAG-JSON format.
-	ToDagJson(privKey crypto.PrivKey) ([]byte, error)
+	ToDagJson(privKey crypto.PrivateKeySigningBytes) ([]byte, error)
 	// ToDagJsonWriter is the same as ToDagJson, but it accepts an io.Writer.
-	ToDagJsonWriter(w io.Writer, privKey crypto.PrivKey) error
+	ToDagJsonWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes) error
+}
+
+// Bundle carries together a decoded token with its Cid and raw signed data.
+type Bundle struct {
+	Cid     cid.Cid
+	Decoded Token
+	Sealed  []byte
 }
--- a/token/internal/envelope/cid_test.go
+++ b/token/internal/envelope/cid_test.go
@@ -9,7 +9,6 @@ import (
 	"github.com/multiformats/go-multihash"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"gotest.tools/v3/golden"

 	"github.com/ucan-wg/go-ucan/token/internal/envelope"
 )
@@ -17,11 +16,11 @@ import (
 func TestCidFromBytes(t *testing.T) {
 	t.Parallel()

-	expData := golden.Get(t, "example.dagcbor")
+	expData := exampleDagCbor
 	expHash, err := multihash.Sum(expData, uint64(multicodec.Sha2_256), -1)
 	require.NoError(t, err)

-	data, err := envelope.ToDagCbor(examplePrivKey(t), newExample(t))
+	data, err := envelope.ToDagCbor(examplePrivKey(t), newExample())
 	require.NoError(t, err)

 	id, err := envelope.CIDFromBytes(data)
--- a/token/internal/envelope/example_test.go
+++ b/token/internal/envelope/example_test.go
@@ -7,6 +7,8 @@ import (
 	"sync"
 	"testing"

+	"github.com/MetaMask/go-did-it/crypto"
+	"github.com/MetaMask/go-did-it/crypto/ed25519"
 	"github.com/ipld/go-ipld-prime"
 	"github.com/ipld/go-ipld-prime/codec/dagcbor"
 	"github.com/ipld/go-ipld-prime/datamodel"
@@ -14,32 +16,30 @@ import (
 	"github.com/ipld/go-ipld-prime/node/basicnode"
 	"github.com/ipld/go-ipld-prime/node/bindnode"
 	"github.com/ipld/go-ipld-prime/schema"
-	"github.com/libp2p/go-libp2p/core/crypto"
 	"github.com/stretchr/testify/require"
-	"gotest.tools/v3/golden"

 	"github.com/ucan-wg/go-ucan/token/internal/envelope"
 )

 const (
-	exampleCID             = "zdpuAyw6R5HvKSPzztuzXNYFx3ZGoMHMuAsXL6u3xLGQriRXQ"
-	exampleDID             = "did:key:z6MkpuK2Amsu1RqcLGgmHHQHhvmeXCCBVsM4XFSg2cCyg4Nh"
+	exampleCID        = "zdpuAn4jksvc1gc9PLDqHw2NoFq8CBkRVTTo2xFuW2JUPS5DY"
+	exampleDID        = "did:key:z6MkuqvEtTW9L1E91CY3GmL83muetLAA2h8A5fUHjJgqq2Ab"
 	exampleGreeting   = "world"
-	examplePrivKeyCfg      = "CAESQP9v2uqECTuIi45dyg3znQvsryvf2IXmOF/6aws6aCehm0FVrj0zHR5RZSDxWNjcpcJqsGym3sjCungX9Zt5oA4="
-	exampleSignatureStr    = "PZV6A2aI7n+MlyADqcqmWhkuyNrgUCDz+qSLSnI9bpasOwOhKUTx95m5Nu5CO/INa1LqzHGioD9+PVf6qdtTBg"
+	examplePrivKeyB64 = "V4hh1lcFV43Y6vyOBEVOFTwl1XS/DR0F/kYcz5i6W/DkrUTG8yx09lOwSf36NCHPKSFYv/T1R3WKjNfndgVucA=="
 	exampleTag        = "ucan/example@v1.0.0-rc.1"
-	exampleTypeName        = "Example"
-	exampleVarsigHeaderStr = "NO0BcQ"

 	invalidSignatureStr = "PZV6A2aI7n+MlyADqcqmWhkuyNrgUCDz+qSLSnI9bpasOwOhKUTx95m5Nu5CO/INa1LqzHGioD9+PVf6qdtTBK"
-
-	exampleDAGCBORFilename = "example.dagcbor"
-	exampleDAGJSONFilename = "example.dagjson"
 )

 //go:embed testdata/example.ipldsch
 var schemaBytes []byte

+//go:embed testdata/example.dagcbor
+var exampleDagCbor []byte
+
+//go:embed testdata/example.dagjson
+var exampleDagJson []byte
+
 var (
 	once      sync.Once
 	ts        *schema.TypeSystem
@@ -59,7 +59,7 @@ func mustLoadSchema() *schema.TypeSystem {
 }

 func exampleType() schema.Type {
-	return mustLoadSchema().TypeByName(exampleTypeName)
+	return mustLoadSchema().TypeByName("Example")
 }

 var _ envelope.Tokener = (*Example)(nil)
@@ -69,9 +69,7 @@ type Example struct {
 	Issuer string
 }

-func newExample(t *testing.T) *Example {
-	t.Helper()
-
+func newExample() *Example {
 	return &Example{
 		Hello:  exampleGreeting,
 		Issuer: exampleDID,
@@ -86,45 +84,30 @@ func (*Example) Tag() string {
 	return exampleTag
 }

-func exampleGoldenNode(t *testing.T) datamodel.Node {
+func examplePrivKey(t *testing.T) crypto.PrivateKeySigningBytes {
 	t.Helper()

-	cbor := golden.Get(t, exampleDAGCBORFilename)
-
-	node, err := ipld.Decode(cbor, dagcbor.Decode)
+	privBytes, err := base64.StdEncoding.DecodeString(examplePrivKeyB64)
 	require.NoError(t, err)

-	return node
-}
-
-func examplePrivKey(t *testing.T) crypto.PrivKey {
-	t.Helper()
-
-	privKeyEnc, err := crypto.ConfigDecodeKey(examplePrivKeyCfg)
-	require.NoError(t, err)
-
-	privKey, err := crypto.UnmarshalPrivateKey(privKeyEnc)
+	privKey, err := ed25519.PrivateKeyFromBytes(privBytes)
 	require.NoError(t, err)

 	return privKey
 }

-func exampleSignature(t *testing.T) []byte {
-	t.Helper()
-
-	sig, err := base64.RawStdEncoding.DecodeString(exampleSignatureStr)
-	require.NoError(t, err)
-
-	return sig
-}
-
-func invalidNodeFromGolden(t *testing.T) datamodel.Node {
+// nodeWithInvalidSignature creates an IPLD node of a token, with an invalid signature
+func nodeWithInvalidSignature(t *testing.T) datamodel.Node {
 	t.Helper()

 	invalidSig, err := base64.RawStdEncoding.DecodeString(invalidSignatureStr)
 	require.NoError(t, err)

-	envelNode := exampleGoldenNode(t)
+	cbor := exampleDagCbor
+
+	envelNode, err := ipld.Decode(cbor, dagcbor.Decode)
+	require.NoError(t, err)
+
 	sigPayloadNode, err := envelNode.LookupByIndex(1)
 	require.NoError(t, err)

--- a/token/internal/envelope/ipld.go
+++ b/token/internal/envelope/ipld.go
@@ -3,7 +3,7 @@
 // a verified [TokenPayload].
 //
 // Encoding functions in this package require a private key as a
-// parameter so the VarsigHeader can be set and so that a
+// parameter so the VarsigBytes can be set and so that a
 // cryptographic signature can be generated.
 //
 // Decoding functions in this package likewise perform the signature
@@ -40,10 +40,10 @@ import (
 	"github.com/ipld/go-ipld-prime/node/basicnode"
 	"github.com/ipld/go-ipld-prime/node/bindnode"
 	"github.com/ipld/go-ipld-prime/schema"
-	"github.com/libp2p/go-libp2p/core/crypto"
+	"github.com/ucan-wg/go-varsig"

-	"github.com/ucan-wg/go-ucan/did"
-	"github.com/ucan-wg/go-ucan/token/internal/varsig"
+	"github.com/MetaMask/go-did-it"
+	"github.com/MetaMask/go-did-it/crypto"
 )

 const (
@@ -70,56 +70,56 @@ type Tokener interface {
 //
 // An error is returned if the conversion fails, or if the resulting
 // Tokener is invalid.
-func Decode[T Tokener](b []byte, decFn codec.Decoder) (T, error) {
+func Decode[T Tokener](b []byte, decFn codec.Decoder, resolvOpts ...did.ResolutionOption) (T, error) {
 	node, err := ipld.Decode(b, decFn)
 	if err != nil {
 		return *new(T), err
 	}

-	return FromIPLD[T](node)
+	return FromIPLD[T](node, resolvOpts...)
 }

 // DecodeReader is the same as Decode, but accept an io.Reader.
-func DecodeReader[T Tokener](r io.Reader, decFn codec.Decoder) (T, error) {
+func DecodeReader[T Tokener](r io.Reader, decFn codec.Decoder, resolvOpts ...did.ResolutionOption) (T, error) {
 	node, err := ipld.DecodeStreaming(r, decFn)
 	if err != nil {
 		return *new(T), err
 	}

-	return FromIPLD[T](node)
+	return FromIPLD[T](node, resolvOpts...)
 }

 // FromDagCbor unmarshals the input data into a Tokener.
 //
 // An error is returned if the conversion fails, or if the resulting
 // Tokener is invalid.
-func FromDagCbor[T Tokener](b []byte) (T, error) {
-	return Decode[T](b, dagcbor.Decode)
+func FromDagCbor[T Tokener](b []byte, resolvOpts ...did.ResolutionOption) (T, error) {
+	return Decode[T](b, dagcbor.Decode, resolvOpts...)
 }

 // FromDagCborReader is the same as FromDagCbor, but accept an io.Reader.
-func FromDagCborReader[T Tokener](r io.Reader) (T, error) {
-	return DecodeReader[T](r, dagcbor.Decode)
+func FromDagCborReader[T Tokener](r io.Reader, resolvOpts ...did.ResolutionOption) (T, error) {
+	return DecodeReader[T](r, dagcbor.Decode, resolvOpts...)
 }

 // FromDagJson unmarshals the input data into a Tokener.
 //
 // An error is returned if the conversion fails, or if the resulting
 // Tokener is invalid.
-func FromDagJson[T Tokener](b []byte) (T, error) {
-	return Decode[T](b, dagjson.Decode)
+func FromDagJson[T Tokener](b []byte, resolvOpts ...did.ResolutionOption) (T, error) {
+	return Decode[T](b, dagjson.Decode, resolvOpts...)
 }

 // FromDagJsonReader is the same as FromDagJson, but accept an io.Reader.
-func FromDagJsonReader[T Tokener](r io.Reader) (T, error) {
-	return DecodeReader[T](r, dagjson.Decode)
+func FromDagJsonReader[T Tokener](r io.Reader, resolvOpts ...did.ResolutionOption) (T, error) {
+	return DecodeReader[T](r, dagjson.Decode, resolvOpts...)
 }

 // FromIPLD unwraps a Tokener from the provided IPLD datamodel.Node.
 //
 // An error is returned if the conversion fails, or if the resulting
 // Tokener is invalid.
-func FromIPLD[T Tokener](node datamodel.Node) (T, error) {
+func FromIPLD[T Tokener](node datamodel.Node, resolvOpts ...did.ResolutionOption) (T, error) {
 	zero := *new(T)

 	info, err := Inspect(node)
@@ -132,7 +132,7 @@ func FromIPLD[T Tokener](node datamodel.Node) (T, error) {
 	}

 	// This needs to be done before converting this node to its schema
-	// representation (afterwards, the field might be renamed os it's safer
+	// representation (afterwards, the field might be renamed, so it's safer
 	// to use the wire name).
 	issuerNode, err := info.tokenPayloadNode.LookupByString("iss")
 	if err != nil {
@@ -162,7 +162,7 @@ func FromIPLD[T Tokener](node datamodel.Node) (T, error) {
 	}

 	// Check that the issuer's DID contains a public key with a type that
-	// matches the VarsigHeader and then verify the SigPayload.
+	// matches the VarsigBytes and then verify the SigPayload.
 	issuer, err := issuerNode.AsString()
 	if err != nil {
 		return zero, err
@@ -173,28 +173,35 @@ func FromIPLD[T Tokener](node datamodel.Node) (T, error) {
 		return zero, err
 	}

-	issuerPubKey, err := issuerDID.PubKey()
+	issuerDoc, err := issuerDID.Document(resolvOpts...)
 	if err != nil {
 		return zero, err
 	}

-	issuerVarsigHeader, err := varsig.Encode(issuerPubKey.Type())
+	vsig, err := varsig.Decode(info.VarsigBytes)
 	if err != nil {
-		return zero, err
+		return zero, fmt.Errorf("failed to decode varsig: %w", err)
 	}

-	if string(info.VarsigHeader) != string(issuerVarsigHeader) {
-		return zero, errors.New("the VarsigHeader key type doesn't match the issuer's key type")
-	}
+	var data []byte

+	switch vsig.PayloadEncoding() {
+	case varsig.PayloadEncodingDAGCBOR:
 		// TODO: can we use the already serialized CBOR data here, instead of encoding again the payload?
-	data, err := ipld.Encode(info.sigPayloadNode, dagcbor.Encode)
+		data, err = ipld.Encode(info.sigPayloadNode, dagcbor.Encode)
+	case varsig.PayloadEncodingDAGJSON:
+		data, err = ipld.Encode(info.sigPayloadNode, dagjson.Encode)
+	default:
+		return zero, errors.New("unsupported payload encoding")
+	}
 	if err != nil {
 		return zero, err
 	}

-	ok, err = issuerPubKey.Verify(data, info.Signature)
-	if err != nil || !ok {
+	// TODO: use CapabilityDelegation() or CapabilityInvocation()
+
+	ok, _ = did.TryAllVerifyBytes(issuerDoc.CapabilityDelegation(), data, info.Signature, crypto.WithVarsig(vsig))
+	if !ok {
 		return zero, errors.New("failed to verify the token's signature")
 	}

@@ -203,7 +210,7 @@ func FromIPLD[T Tokener](node datamodel.Node) (T, error) {

 // Encode marshals a Tokener to the format specified by the provided
 // codec.Encoder.
-func Encode(privKey crypto.PrivKey, token Tokener, encFn codec.Encoder) ([]byte, error) {
+func Encode(privKey crypto.PrivateKeySigningBytes, token Tokener, encFn codec.Encoder) ([]byte, error) {
 	node, err := ToIPLD(privKey, token)
 	if err != nil {
 		return nil, err
@@ -214,7 +221,7 @@ func Encode(privKey crypto.PrivKey, token Tokener, encFn codec.Encoder) ([]byte,

 // EncodeWriter is the same as Encode but outputs to an io.Writer instead
 // of encoding into a []byte.
-func EncodeWriter(w io.Writer, privKey crypto.PrivKey, token Tokener, encFn codec.Encoder) error {
+func EncodeWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes, token Tokener, encFn codec.Encoder) error {
 	node, err := ToIPLD(privKey, token)
 	if err != nil {
 		return err
@@ -224,38 +231,36 @@ func EncodeWriter(w io.Writer, privKey crypto.PrivKey, token Tokener, encFn code
 }

 // ToDagCbor marshals the Tokener to the DAG-CBOR format.
-func ToDagCbor(privKey crypto.PrivKey, token Tokener) ([]byte, error) {
+func ToDagCbor(privKey crypto.PrivateKeySigningBytes, token Tokener) ([]byte, error) {
 	return Encode(privKey, token, dagcbor.Encode)
 }

 // ToDagCborWriter is the same as ToDagCbor but outputs to an io.Writer
 // instead of encoding into a []byte.
-func ToDagCborWriter(w io.Writer, privKey crypto.PrivKey, token Tokener) error {
+func ToDagCborWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes, token Tokener) error {
 	return EncodeWriter(w, privKey, token, dagcbor.Encode)
 }

 // ToDagJson marshals the Tokener to the DAG-JSON format.
-func ToDagJson(privKey crypto.PrivKey, token Tokener) ([]byte, error) {
+func ToDagJson(privKey crypto.PrivateKeySigningBytes, token Tokener) ([]byte, error) {
 	return Encode(privKey, token, dagjson.Encode)
 }

 // ToDagJsonWriter is the same as ToDagJson but outputs to an io.Writer
 // instead of encoding into a []byte.
-func ToDagJsonWriter(w io.Writer, privKey crypto.PrivKey, token Tokener) error {
+func ToDagJsonWriter(w io.Writer, privKey crypto.PrivateKeySigningBytes, token Tokener) error {
 	return EncodeWriter(w, privKey, token, dagjson.Encode)
 }

 // ToIPLD wraps the Tokener in an IPLD datamodel.Node.
-func ToIPLD(privKey crypto.PrivKey, token Tokener) (datamodel.Node, error) {
+func ToIPLD(privKey crypto.PrivateKeySigningBytes, token Tokener) (datamodel.Node, error) {
 	tokenPayloadNode := bindnode.Wrap(token, token.Prototype().Type()).Representation()

-	varsigHeader, err := varsig.Encode(privKey.Type())
-	if err != nil {
-		return nil, err
-	}
+	opts := []crypto.SigningOption{crypto.WithPayloadEncoding(varsig.PayloadEncodingDAGCBOR)}
+	vsig := privKey.Varsig(opts...)

 	sigPayloadNode, err := qp.BuildMap(basicnode.Prototype.Any, 2, func(ma datamodel.MapAssembler) {
-		qp.MapEntry(ma, VarsigHeaderKey, qp.Bytes(varsigHeader))
+		qp.MapEntry(ma, VarsigHeaderKey, qp.Bytes(vsig.Encode()))
 		qp.MapEntry(ma, token.Tag(), qp.Node(tokenPayloadNode))
 	})

@@ -264,7 +269,7 @@ func ToIPLD(privKey crypto.PrivKey, token Tokener) (datamodel.Node, error) {
 		return nil, err
 	}

-	signature, err := privKey.Sign(data)
+	signature, err := privKey.SignToBytes(data, opts...)
 	if err != nil {
 		return nil, err
 	}
@@ -315,7 +320,7 @@ func FindTag(node datamodel.Node) (string, error) {
 type Info struct {
 	Tag              string
 	Signature        []byte
-	VarsigHeader     []byte
+	VarsigBytes      []byte
 	sigPayloadNode   datamodel.Node // private, we don't want to expose that
 	tokenPayloadNode datamodel.Node // private, we don't want to expose that
 }
@@ -367,7 +372,7 @@ func Inspect(node datamodel.Node) (Info, error) {
 		switch {
 		case key == VarsigHeaderKey:
 			foundVarsigHeader = true
-			res.VarsigHeader, err = v.AsBytes()
+			res.VarsigBytes, err = v.AsBytes()
 			if err != nil {
 				return Info{}, err
 			}
--- a/token/internal/envelope/ipld_test.go
+++ b/token/internal/envelope/ipld_test.go
@@ -3,15 +3,16 @@ package envelope_test
 import (
 	"bytes"
 	"crypto/sha256"
+	_ "embed"
 	"encoding/base64"
 	"os"
 	"testing"

+	_ "github.com/MetaMask/go-did-it/verifiers/did-key"
 	"github.com/ipld/go-ipld-prime"
 	"github.com/ipld/go-ipld-prime/codec/dagcbor"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"gotest.tools/v3/golden"

 	"github.com/ucan-wg/go-ucan/token/internal/envelope"
 )
@@ -22,9 +23,7 @@ func TestDecode(t *testing.T) {
 	t.Run("via FromDagCbor", func(t *testing.T) {
 		t.Parallel()

-		data := golden.Get(t, "example.dagcbor")
-
-		tkn, err := envelope.FromDagCbor[*Example](data)
+		tkn, err := envelope.FromDagCbor[*Example](exampleDagCbor)
 		require.NoError(t, err)
 		assert.Equal(t, exampleGreeting, tkn.Hello)
 		assert.Equal(t, exampleDID, tkn.Issuer)
@@ -33,9 +32,7 @@ func TestDecode(t *testing.T) {
 	t.Run("via FromDagJson", func(t *testing.T) {
 		t.Parallel()

-		data := golden.Get(t, "example.dagjson")
-
-		tkn, err := envelope.FromDagJson[*Example](data)
+		tkn, err := envelope.FromDagJson[*Example](exampleDagJson)
 		require.NoError(t, err)
 		assert.Equal(t, exampleGreeting, tkn.Hello)
 		assert.Equal(t, exampleDID, tkn.Issuer)
@@ -48,17 +45,17 @@ func TestEncode(t *testing.T) {
 	t.Run("via ToDagCbor", func(t *testing.T) {
 		t.Parallel()

-		data, err := envelope.ToDagCbor(examplePrivKey(t), newExample(t))
+		data, err := envelope.ToDagCbor(examplePrivKey(t), newExample())
 		require.NoError(t, err)
-		golden.AssertBytes(t, data, exampleDAGCBORFilename)
+		require.Equal(t, exampleDagCbor, data)
 	})

 	t.Run("via ToDagJson", func(t *testing.T) {
 		t.Parallel()

-		data, err := envelope.ToDagJson(examplePrivKey(t), newExample(t))
+		data, err := envelope.ToDagJson(examplePrivKey(t), newExample())
 		require.NoError(t, err)
-		golden.Assert(t, string(data), exampleDAGJSONFilename)
+		require.Equal(t, exampleDagJson, data)
 	})
 }

@@ -68,14 +65,14 @@ func TestRoundtrip(t *testing.T) {
 	t.Run("via FromDagCbor/ToDagCbor", func(t *testing.T) {
 		t.Parallel()

-		dataIn := golden.Get(t, exampleDAGCBORFilename)
+		dataIn := exampleDagCbor

 		tkn, err := envelope.FromDagCbor[*Example](dataIn)
 		require.NoError(t, err)
 		assert.Equal(t, exampleGreeting, tkn.Hello)
 		assert.Equal(t, exampleDID, tkn.Issuer)

-		dataOut, err := envelope.ToDagCbor(examplePrivKey(t), newExample(t))
+		dataOut, err := envelope.ToDagCbor(examplePrivKey(t), newExample())
 		require.NoError(t, err)
 		assert.Equal(t, dataIn, dataOut)
 	})
@@ -83,7 +80,7 @@ func TestRoundtrip(t *testing.T) {
 	t.Run("via FromDagCborReader/ToDagCborWriter", func(t *testing.T) {
 		t.Parallel()

-		data := golden.Get(t, exampleDAGCBORFilename)
+		data := exampleDagCbor

 		tkn, err := envelope.FromDagCborReader[*Example](bytes.NewReader(data))
 		require.NoError(t, err)
@@ -91,21 +88,21 @@ func TestRoundtrip(t *testing.T) {
 		assert.Equal(t, exampleDID, tkn.Issuer)

 		w := &bytes.Buffer{}
-		require.NoError(t, envelope.ToDagCborWriter(w, examplePrivKey(t), newExample(t)))
+		require.NoError(t, envelope.ToDagCborWriter(w, examplePrivKey(t), newExample()))
 		assert.Equal(t, data, w.Bytes())
 	})

 	t.Run("via FromDagJson/ToDagJson", func(t *testing.T) {
 		t.Parallel()

-		dataIn := golden.Get(t, exampleDAGJSONFilename)
+		dataIn := exampleDagJson

 		tkn, err := envelope.FromDagJson[*Example](dataIn)
 		require.NoError(t, err)
 		assert.Equal(t, exampleGreeting, tkn.Hello)
 		assert.Equal(t, exampleDID, tkn.Issuer)

-		dataOut, err := envelope.ToDagJson(examplePrivKey(t), newExample(t))
+		dataOut, err := envelope.ToDagJson(examplePrivKey(t), newExample())
 		require.NoError(t, err)
 		assert.Equal(t, dataIn, dataOut)
 	})
@@ -113,7 +110,7 @@ func TestRoundtrip(t *testing.T) {
 	t.Run("via FromDagJsonReader/ToDagJsonrWriter", func(t *testing.T) {
 		t.Parallel()

-		data := golden.Get(t, exampleDAGJSONFilename)
+		data := exampleDagJson

 		tkn, err := envelope.FromDagJsonReader[*Example](bytes.NewReader(data))
 		require.NoError(t, err)
@@ -121,7 +118,7 @@ func TestRoundtrip(t *testing.T) {
 		assert.Equal(t, exampleDID, tkn.Issuer)

 		w := &bytes.Buffer{}
-		require.NoError(t, envelope.ToDagJsonWriter(w, examplePrivKey(t), newExample(t)))
+		require.NoError(t, envelope.ToDagJsonWriter(w, examplePrivKey(t), newExample()))
 		assert.Equal(t, data, w.Bytes())
 	})
 }
@@ -129,7 +126,7 @@ func TestRoundtrip(t *testing.T) {
 func TestFromIPLD_with_invalid_signature(t *testing.T) {
 	t.Parallel()

-	node := invalidNodeFromGolden(t)
+	node := nodeWithInvalidSignature(t)
 	tkn, err := envelope.FromIPLD[*Example](node)
 	assert.Nil(t, tkn)
 	require.EqualError(t, err, "failed to verify the token's signature")
@@ -158,18 +155,17 @@ func TestHash(t *testing.T) {
 func TestInspect(t *testing.T) {
 	t.Parallel()

-	data := golden.Get(t, "example.dagcbor")
-	node, err := ipld.Decode(data, dagcbor.Decode)
+	node, err := ipld.Decode(exampleDagCbor, dagcbor.Decode)
 	require.NoError(t, err)

-	expSig, err := base64.RawStdEncoding.DecodeString("fPqfwL3iFpbw9SvBiq0DIbUurv9o6c36R08tC/yslGrJcwV51ghzWahxdetpEf6T5LCszXX9I/K8khvnmAxjAg")
+	expSig, err := base64.RawStdEncoding.DecodeString("+xUwgl/5VZcTxx6iePmkrIaZAlxuelHTbeQ5lQIgIV3ZgHS+Jf5BUERB0fvmFfiIfa5A3yMPfEA/7rswYsRRCg")
 	require.NoError(t, err)

 	info, err := envelope.Inspect(node)
 	require.NoError(t, err)
 	assert.Equal(t, expSig, info.Signature)
 	assert.Equal(t, "ucan/example@v1.0.0-rc.1", info.Tag)
-	assert.Equal(t, []byte{0x34, 0xed, 0x1, 0x71}, info.VarsigHeader)
+	assert.Equal(t, []byte{0x34, 0x1, 0xed, 0x1, 0xed, 0x1, 0x13, 0x71}, info.VarsigBytes)
 }

 func FuzzInspect(f *testing.F) {
--- a/token/internal/envelope/testdata/example.dagcbor
+++ b/token/internal/envelope/testdata/example.dagcbor
@@ -1 +1,2 @@
-‚X@|úŸÀ½â–ðõ+ÁŠ!µ.®ÿhéÍúGO-ü¬”jÉsyÖsY¨quëiþ“ä°¬Íuý#ò¼’ç˜c¢ahD4íqxucan/example@v1.0.0-rc.1¢cissx8did:key:z6MkpuK2Amsu1RqcLGgmHHQHhvmeXCCBVsM4XFSg2cCyg4Nhehelloeworld
+‚X@û0‚_ùU—Ç¢xù¤¬†™\nzQÓmä9• !]Ù€t¾%þAPDAÑûæøˆ}®@ß#|@?î»0bÄQ
+¢ahH4ííqxucan/example@v1.0.0-rc.1¢cissx8did:key:z6MkuqvEtTW9L1E91CY3GmL83muetLAA2h8A5fUHjJgqq2Abehelloeworld
--- a/token/internal/envelope/testdata/example.dagjson
+++ b/token/internal/envelope/testdata/example.dagjson
@@ -1 +1 @@
-[{"/":{"bytes":"fPqfwL3iFpbw9SvBiq0DIbUurv9o6c36R08tC/yslGrJcwV51ghzWahxdetpEf6T5LCszXX9I/K8khvnmAxjAg"}},{"h":{"/":{"bytes":"NO0BcQ"}},"ucan/example@v1.0.0-rc.1":{"hello":"world","iss":"did:key:z6MkpuK2Amsu1RqcLGgmHHQHhvmeXCCBVsM4XFSg2cCyg4Nh"}}]
+[{"/":{"bytes":"+xUwgl/5VZcTxx6iePmkrIaZAlxuelHTbeQ5lQIgIV3ZgHS+Jf5BUERB0fvmFfiIfa5A3yMPfEA/7rswYsRRCg"}},{"h":{"/":{"bytes":"NAHtAe0BE3E"}},"ucan/example@v1.0.0-rc.1":{"hello":"world","iss":"did:key:z6MkuqvEtTW9L1E91CY3GmL83muetLAA2h8A5fUHjJgqq2Ab"}}]
--- a/token/internal/parse/parse.go
+++ b/token/internal/parse/parse.go
@@ -4,13 +4,14 @@ import (
 	"fmt"
 	"time"

-	"github.com/ucan-wg/go-ucan/did"
+	"github.com/MetaMask/go-did-it"
+
 	"github.com/ucan-wg/go-ucan/pkg/policy/limits"
 )

 func OptionalDID(s *string) (did.DID, error) {
 	if s == nil {
-		return did.Undef, nil
+		return nil, nil
 	}
 	return did.Parse(*s)
 }
--- a/token/internal/parse/parse_test.go
+++ b/token/internal/parse/parse_test.go
@@ -4,6 +4,7 @@ import (
 	"testing"

 	"github.com/stretchr/testify/require"
+
 	"github.com/ucan-wg/go-ucan/pkg/policy/limits"
 )

--- a/token/internal/varsig/varsig.go
+++ b/token/internal/varsig/varsig.go
@@ -1,133 +0,0 @@
-// Package varsig implements the portion of the [varsig specification]
-// that's needed for the UCAN [Envelope].
-//
-// While the [Envelope] specification has a field that's labelled
-// "VarsigHeader", this field is actually the prefix, header and segments
-// of the body excluding the signature itself (which is a different field
-// in the [Envelope]).
-//
-// Given that [go-ucan] supports a limited number of public key types,
-// and that the signature isn't part of the resulting field, the values
-// that are used are constants.  Note that for key types that are fully
-// specified in the [did:key], the [VarsigHeader] field isn't technically
-// needed and could theoretically conflict with the DID.
-//
-// Treating these values as constants has no impact when issuing or
-// delegating tokens.  When decoding tokens, simply matching the strings
-// will allow us to detect errors but won't provide as much detail (e.g.
-// we can't indicate that the signature was incorrectly generated from
-// a DAG-JSON encoding.)
-//
-// [varsig specification]: https://github.com/ChainAgnostic/varsig
-// [Envelope]:https://github.com/ucan-wg/spec#envelope
-// [go-ucan]: https://github.com/ucan-wg/go-ucan
-package varsig
-
-import (
-	"encoding/binary"
-	"errors"
-	"fmt"
-
-	"github.com/libp2p/go-libp2p/core/crypto/pb"
-	"github.com/multiformats/go-multicodec"
-)
-
-const (
-	Prefix = 0x34
-)
-
-// ErrUnknownHeader is returned when it's not possible to decode the
-// provided string into a libp2p public key type.
-var ErrUnknownHeader = errors.New("could not decode unknown header")
-
-// ErrUnknownKeyType is returned when value provided is not a valid
-// libp2p public key type.
-var ErrUnknownKeyType = errors.New("could not encode unsupported key type")
-
-var (
-	decMap = headerToKeyType()
-	encMap = keyTypeToHeader()
-)
-
-// Decode returns either the pb.KeyType associated with the provided Header
-// or an error.
-//
-// Currently, only the four key types supported by the [go-libp2p/core/crypto]
-// library are supported.
-//
-// [go-libp2p/core/crypto]: github.com/libp2p/go-libp2p/core/crypto
-func Decode(header []byte) (pb.KeyType, error) {
-	keyType, ok := decMap[string(header)]
-	if !ok {
-		return -1, fmt.Errorf("%w: %s", ErrUnknownHeader, header)
-	}
-
-	return keyType, nil
-}
-
-// Encode returns either the header associated with the provided pb.KeyType
-// or an error indicating the header was unknown.
-//
-// Currently, only the four key types supported by the [go-libp2p/core/crypto]
-// library are supported.
-//
-// [go-libp2p/core/crypto]: github.com/libp2p/go-libp2p/core/crypto
-func Encode(keyType pb.KeyType) ([]byte, error) {
-	header, ok := encMap[keyType]
-	if !ok {
-		return nil, fmt.Errorf("%w: %s", ErrUnknownKeyType, keyType.String())
-	}
-
-	return []byte(header), nil
-}
-
-func keyTypeToHeader() map[pb.KeyType]string {
-	const rsaSigLen = 0x100
-
-	return map[pb.KeyType]string{
-		pb.KeyType_RSA: header(
-			Prefix,
-			multicodec.RsaPub,
-			multicodec.Sha2_256,
-			rsaSigLen,
-			multicodec.DagCbor,
-		),
-		pb.KeyType_Ed25519: header(
-			Prefix,
-			multicodec.Ed25519Pub,
-			multicodec.DagCbor,
-		),
-		pb.KeyType_Secp256k1: header(
-			Prefix,
-			multicodec.Secp256k1Pub,
-			multicodec.Sha2_256,
-			multicodec.DagCbor,
-		),
-		pb.KeyType_ECDSA: header(
-			Prefix,
-			multicodec.Es256,
-			multicodec.Sha2_256,
-			multicodec.DagCbor,
-		),
-	}
-}
-
-func headerToKeyType() map[string]pb.KeyType {
-	out := make(map[string]pb.KeyType, len(encMap))
-
-	for keyType, header := range encMap {
-		out[header] = keyType
-	}
-
-	return out
-}
-
-func header(vals ...multicodec.Code) string {
-	var buf []byte
-
-	for _, val := range vals {
-		buf = binary.AppendUvarint(buf, uint64(val))
-	}
-
-	return string(buf)
-}
--- a/token/internal/varsig/varsig_test.go
+++ b/token/internal/varsig/varsig_test.go
@@ -1,51 +0,0 @@
-package varsig_test
-
-import (
-	"encoding/base64"
-	"fmt"
-	"testing"
-
-	"github.com/libp2p/go-libp2p/core/crypto/pb"
-	"github.com/stretchr/testify/assert"
-
-	"github.com/ucan-wg/go-ucan/token/internal/varsig"
-)
-
-func TestDecode(t *testing.T) {
-	t.Parallel()
-
-	notAHeader := base64.RawStdEncoding.EncodeToString([]byte("not a header"))
-	keyType, err := varsig.Decode([]byte(notAHeader))
-	assert.Equal(t, pb.KeyType(-1), keyType)
-	assert.ErrorIs(t, err, varsig.ErrUnknownHeader)
-}
-
-func ExampleDecode() {
-	hdr, err := base64.RawStdEncoding.DecodeString("NIUkEoACcQ")
-	if err != nil {
-		fmt.Println(err.Error())
-
-		return
-	}
-
-	keyType, _ := varsig.Decode(hdr)
-	fmt.Println(keyType.String())
-	// Output:
-	// RSA
-}
-
-func TestEncode(t *testing.T) {
-	t.Parallel()
-
-	header, err := varsig.Encode(pb.KeyType(99))
-	assert.Nil(t, header)
-	assert.ErrorIs(t, err, varsig.ErrUnknownKeyType)
-}
-
-func ExampleEncode() {
-	header, _ := varsig.Encode(pb.KeyType_RSA)
-	fmt.Println(base64.RawStdEncoding.EncodeToString(header))
-
-	// Output:
-	// NIUkEoACcQ
-}
--- a/token/invocation/errors.go
+++ b/token/invocation/errors.go
@@ -4,13 +4,13 @@ import "errors"

 // Loading errors
 var (
-	// ErrMissingDelegation
+	// ErrMissingDelegation is returned when a loader can't find a delegation
 	ErrMissingDelegation = errors.New("loader missing delegation for proof chain")
 )

 // Time bound errors
 var (
-	// ErrTokenExpired is returned if a token is invalid at execution time
+	// ErrTokenInvalidNow is returned if a token is invalid at execution time
 	ErrTokenInvalidNow = errors.New("token has expired")
 )

--- a/token/invocation/examples_test.go
+++ b/token/invocation/examples_test.go
@@ -7,14 +7,15 @@ import (
 	"fmt"
 	"time"

+	"github.com/MetaMask/go-did-it"
+	didkeyctl "github.com/MetaMask/go-did-it/controller/did-key"
+	"github.com/MetaMask/go-did-it/crypto/ed25519"
 	"github.com/ipfs/go-cid"
 	"github.com/ipld/go-ipld-prime"
 	"github.com/ipld/go-ipld-prime/codec/dagcbor"
 	"github.com/ipld/go-ipld-prime/codec/dagjson"
 	"github.com/ipld/go-ipld-prime/node/basicnode"
-	"github.com/libp2p/go-libp2p/core/crypto"

-	"github.com/ucan-wg/go-ucan/did"
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/token/invocation"
 )
@@ -34,7 +35,7 @@ func ExampleNew() {
 		invocation.WithMeta("env", "development"),
 		invocation.WithMeta("tags", meta["tags"]),
 		invocation.WithExpirationIn(time.Minute),
-		invocation.WithoutInvokedAt())
+		invocation.WithoutIssuedAt())
 	if err != nil {
 		fmt.Println("failed to create invocation:", err.Error())

@@ -60,18 +61,18 @@ func ExampleNew() {
 	fmt.Println(json)

 	// Expected CID and DAG-JSON output:
-	// CID: bafyreid2n5q45vk4osned7k5huocbe3mxbisonh5vujepqftc5ftr543ae
+	// CID: bafyreicgyuf6g7geoupyzpo3lgvyvsyhtc6tvnhiajkoo7lmy6woavkhra
 	// Token (pretty DAG-JSON):
 	// [
 	//   {
 	// 	"/": {
-	// 	  "bytes": "gvyL7kdSkgmaDpDU/Qj9ohRwxYLCHER52HFMSFEqQqEcQC9qr4JCPP1f/WybvGGuVzYiA0Hx4JO+ohNz8BxUAA"
+	// 	  "bytes": "nWYKygq0TTooQGdQsfQWwMOCuX7+KYNRSyW8h4AcRoTIJHsYyG/mpU3iBhAdsAGhi8Brnm+/Z0tC2KoC/KUlDA"
 	// 	}
 	//   },
 	//   {
 	// 	"h": {
 	// 	  "/": {
-	// 		"bytes": "NO0BcQ"
+	// 		"bytes": "NAHtAe0BE3E"
 	// 	  }
 	// 	},
 	// 	"ucan/inv@1.0.0-rc.1": {
@@ -91,8 +92,8 @@ func ExampleNew() {
 	// 		"uri": "https://example.com/blog/posts"
 	// 	  },
 	// 	  "cmd": "/crud/create",
-	// 	  "exp": 1729788921,
-	// 	  "iss": "did:key:z6MkhniGGyP88eZrq2dpMvUPdS2RQMhTUAWzcu6kVGUvEtCJ",
+	// 	  "exp": 1753965273,
+	// 	  "iss": "did:key:z6MknZNRLJ8zD2x5QhFuPsXYKAJ8PJpCe76bC5p7bGZXC5HD",
 	// 	  "meta": {
 	// 		"env": "development",
 	// 		"tags": [
@@ -103,7 +104,7 @@ func ExampleNew() {
 	// 	  },
 	// 	  "nonce": {
 	// 		"/": {
-	// 		  "bytes": "2xXPoZwWln1TfXIp"
+	// 		  "bytes": "y4kwaLuEHOPBUgrl"
 	// 		}
 	// 	  },
 	// 	  "prf": [
@@ -117,7 +118,7 @@ func ExampleNew() {
 	// 		  "/": "bafyreibkb66tpo2ixqx3fe5hmekkbuasrod6olt5bwm5u5pi726mduuwlq"
 	// 		}
 	// 	  ],
-	// 	  "sub": "did:key:z6MktWuvPvBe5UyHnDGuEdw8aJ5qrhhwLG6jy7cQYM6ckP6P"
+	// 	  "sub": "did:key:z6MkqEBN9zEGU9Euh9toLGFkTaSguXPavv55yS9m3VnwWeMW"
 	// 	}
 	//   }
 	// ]
@@ -144,18 +145,22 @@ func prettyDAGJSON(data []byte) (string, error) {
 	return out.String(), nil
 }

-func setupExampleNew() (privKey crypto.PrivKey, iss, sub did.DID, cmd command.Command, args map[string]any, prf []cid.Cid, meta map[string]any, errs error) {
+func setupExampleNew() (privKey ed25519.PrivateKey, iss, sub did.DID, cmd command.Command, args map[string]any, prf []cid.Cid, meta map[string]any, errs error) {
 	var err error

-	privKey, iss, err = did.GenerateEd25519()
+	_, privKey, err = ed25519.GenerateKeyPair()
 	if err != nil {
-		errs = errors.Join(errs, fmt.Errorf("failed to generate Issuer identity: %w", err))
+		errs = errors.Join(errs, fmt.Errorf("failed to generate Ed25519 keypair: %w", err))
+		return
 	}
+	iss = didkeyctl.FromPrivateKey(privKey)

-	_, sub, err = did.GenerateEd25519()
+	_, privKeySub, err := ed25519.GenerateKeyPair()
 	if err != nil {
-		errs = errors.Join(errs, fmt.Errorf("failed to generate Subject identity: %w", err))
+		errs = errors.Join(errs, fmt.Errorf("failed to generate Ed25519 keypair: %w", err))
+		return
 	}
+	sub = didkeyctl.FromPrivateKey(privKeySub)

 	cmd, err = command.Parse("/crud/create")
 	if err != nil {
--- a/token/invocation/invocation.go
+++ b/token/invocation/invocation.go
@@ -14,9 +14,9 @@ import (
 	"strings"
 	"time"

+	"github.com/MetaMask/go-did-it"
 	"github.com/ipfs/go-cid"

-	"github.com/ucan-wg/go-ucan/did"
 	"github.com/ucan-wg/go-ucan/pkg/args"
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/pkg/meta"
@@ -51,7 +51,7 @@ type Token struct {
 	// The timestamp at which the Invocation becomes invalid
 	expiration *time.Time
 	// The timestamp at which the Invocation was created
-	invokedAt *time.Time
+	issuedAt *time.Time

 	// An optional CID of the Receipt that enqueued the Task
 	cause *cid.Cid
@@ -59,13 +59,16 @@ type Token struct {

 // New creates an invocation Token with the provided options.
 //
+// The given proofs MUST be ordered from the leaf (matching the invocation) to
+// the root delegation.
+//
 // If no nonce is provided, a random 12-byte nonce is generated. Use the
 // WithNonce or WithEmptyNonce options to specify provide your own nonce
 // or to leave the nonce empty respectively.
 //
-// If no invokedAt is provided, the current time is used. Use the
-// WithInvokedAt or WithInvokedAtIn Options to specify a different time
-// or the WithoutInvokedAt Option to clear the Token's invokedAt field.
+// If no IssuedAt is provided, the current time is used. Use the
+// IssuedAt or WithIssuedAtIn Options to specify a different time
+// or the WithoutIssuedAt Option to clear the Token's IssuedAt field.
 //
 // With the exception of the WithMeta option, all others will overwrite
 // the previous contents of their target field.
@@ -82,7 +85,7 @@ func New(iss did.DID, cmd command.Command, sub did.DID, prf []cid.Cid, opts ...O
 		proof:     prf,
 		meta:      meta.NewMeta(),
 		nonce:     nil,
-		invokedAt: &iat,
+		issuedAt:  &iat,
 	}

 	for _, opt := range opts {
@@ -106,10 +109,23 @@ func New(iss did.DID, cmd command.Command, sub did.DID, prf []cid.Cid, opts ...O
 	return &tkn, nil
 }

+// NewSelfSigned is similar to New, but self-signs the invocation, and therefore does not require a proof.
+// It's similar to having an invocation with a delegation from the invoker to itself.
+// This can be useful in some protocols where the invoker is the same as the subject, or to prove ownership of a resource.
+//
+// You can read it as "(Issuer - I) executes (command) on itself".
+func NewSelfSigned(iss did.DID, cmd command.Command, opts ...Option) (*Token, error) {
+	return New(iss, cmd, iss, nil, opts...)
+}
+
+// ExecutionAllowed verifies that the invocation respects the rules and can be executed.
+// IMPORTANT: this function does NOT verify that the subject (and audience if set) makes sense in your context.
 func (t *Token) ExecutionAllowed(loader delegation.Loader) error {
 	return t.executionAllowed(loader, t.arguments)
 }

+// ExecutionAllowedWithArgsHook is the same as ExecutionAllowed, but allows to modify the arguments before verifying them.
+// IMPORTANT: this function does NOT verify that the subject (and audience if set) makes sense in your context.
 func (t *Token) ExecutionAllowedWithArgsHook(loader delegation.Loader, hook func(args args.ReadOnly) (*args.Args, error)) error {
 	newArgs, err := hook(t.arguments.ReadOnly())
 	if err != nil {
@@ -166,7 +182,7 @@ func (t *Token) Arguments() args.ReadOnly {
 	return t.arguments.ReadOnly()
 }

-// Proof() returns the ordered list of cid.Cid which reference the
+// Proof returns the ordered list of cid.Cid which reference the
 // delegation Tokens that authorize this invocation.
 // Ordering is from the leaf Delegation (with aud matching the invocation's iss)
 // to the root delegation.
@@ -189,10 +205,10 @@ func (t *Token) Expiration() *time.Time {
 	return t.expiration
 }

-// InvokedAt returns the time.Time at which the invocation token was
+// IssuedAt returns the time.Time at which the invocation token was
 // created.
-func (t *Token) InvokedAt() *time.Time {
-	return t.invokedAt
+func (t *Token) IssuedAt() *time.Time {
+	return t.issuedAt
 }

 // Cause returns the Token's (optional) cause field which may specify
@@ -201,13 +217,18 @@ func (t *Token) Cause() *cid.Cid {
 	return t.cause
 }

+// IsSelfSigned returns true if the token is self-signed, ie it has the same issuer and subject.
+func (t *Token) IsSelfSigned() bool {
+	return t.issuer.Equal(t.subject)
+}
+
 // IsValidNow verifies that the token can be used at the current time, based on expiration or "not before" fields.
 // This does NOT do any other kind of verifications.
 func (t *Token) IsValidNow() bool {
 	return t.IsValidAt(time.Now())
 }

-// IsValidNow verifies that the token can be used at the given time, based on expiration or "not before" fields.
+// IsValidAt verifies that the token can be used at the given time, based on expiration or "not before" fields.
 // This does NOT do any other kind of verifications.
 func (t *Token) IsValidAt(ti time.Time) bool {
 	if t.expiration != nil && ti.After(*t.expiration) {
@@ -228,7 +249,7 @@ func (t *Token) String() string {
 	res.WriteString(fmt.Sprintf("Nonce: %s\n", base64.StdEncoding.EncodeToString(t.Nonce())))
 	res.WriteString(fmt.Sprintf("Meta: %s\n", t.Meta()))
 	res.WriteString(fmt.Sprintf("Expiration: %v\n", t.Expiration()))
-	res.WriteString(fmt.Sprintf("Invoked At: %v\n", t.InvokedAt()))
+	res.WriteString(fmt.Sprintf("Issued At: %v\n", t.IssuedAt()))
 	res.WriteString(fmt.Sprintf("Cause: %v", t.Cause()))

 	return res.String()
@@ -238,7 +259,7 @@ func (t *Token) validate() error {
 	var errs error

 	requiredDID := func(id did.DID, fieldname string) {
-		if !id.Defined() {
+		if id == nil {
 			errs = errors.Join(errs, fmt.Errorf(`a valid did is required for %s: %s`, fieldname, id.String()))
 		}
 	}
@@ -273,7 +294,7 @@ func tokenFromModel(m tokenPayloadModel) (*Token, error) {
 	)

 	if tkn.issuer, err = did.Parse(m.Iss); err != nil {
-		return nil, fmt.Errorf("parse iss: %w", err)
+		return nil, fmt.Errorf("parse issuer: %w", err)
 	}

 	if tkn.subject, err = did.Parse(m.Sub); err != nil {
@@ -310,9 +331,9 @@ func tokenFromModel(m tokenPayloadModel) (*Token, error) {
 		return nil, fmt.Errorf("parse expiration: %w", err)
 	}

-	tkn.invokedAt, err = parse.OptionalTimestamp(m.Iat)
+	tkn.issuedAt, err = parse.OptionalTimestamp(m.Iat)
 	if err != nil {
-		return nil, fmt.Errorf("parse invokedAt: %w", err)
+		return nil, fmt.Errorf("parse IssuedAt: %w", err)
 	}

 	tkn.cause = m.Cause
--- a/token/invocation/invocation_test.go
+++ b/token/invocation/invocation_test.go
@@ -1,12 +1,14 @@
 package invocation_test

 import (
+	_ "embed"
 	"testing"
+	"time"

+	"github.com/MetaMask/go-did-it/didtest"
 	"github.com/ipfs/go-cid"
 	"github.com/stretchr/testify/require"

-	"github.com/ucan-wg/go-ucan/did/didtest"
 	"github.com/ucan-wg/go-ucan/pkg/args"
 	"github.com/ucan-wg/go-ucan/pkg/command"
 	"github.com/ucan-wg/go-ucan/pkg/policy/policytest"
@@ -14,146 +16,260 @@ import (
 	"github.com/ucan-wg/go-ucan/token/invocation"
 )

-const (
-	missingPrivKeyCfg = "CAESQMjRvrEIjpPYRQKmkAGw/pV0XgE958rYa4vlnKJjl1zz/sdnGnyV1xKLJk8D39edyjhHWyqcpgFnozQK62SG16k="
-	missingTknCIDStr  = "bafyreigwypmw6eul6vadi6g6lnfbsfo2zck7gfzsbjoroqs3djhnzzc7mm"
-	missingDIDStr     = "did:key:z6MkwboxFsH3kEuehBZ5fLkRmxi68yv1u38swA4r9Jm2VRma"
-)
+//go:embed testdata/new.dagjson
+var newDagJson []byte
+
+//go:embed testdata/selfsigned.dagjson
+var selfsignedDagJson []byte
+
+const missingTknCIDStr = "bafyreigwypmw6eul6vadi6g6lnfbsfo2zck7gfzsbjoroqs3djhnzzc7mm"

 var emptyArguments = args.New()

 func TestToken_ExecutionAllowed(t *testing.T) {
-	t.Parallel()
+	for _, tc := range []struct {
+		name   string
+		issuer didtest.Persona
+		cmd    command.Command
+		args   *args.Args
+		proofs []cid.Cid
+		opts   []invocation.Option
+		err    error
+	}{
+		// Passes
+		{
+			name:   "passes - only root",
+			issuer: didtest.PersonaBob,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBob,
+			err:    nil,
+		},
+		{
+			name:   "passes - valid chain",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank,
+			err:    nil,
+		},
+		{
+			name:   "passes - proof chain attenuates command",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.AttenuatedCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank_ValidAttenuatedCommand,
+			err:    nil,
+		},
+		{
+			name:   "passes - invocation attenuates command",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.AttenuatedCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank,
+			err:    nil,
+		},
+		{
+			name:   "passes - arguments satisfy empty policy",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   policytest.SpecValidArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank,
+			err:    nil,
+		},
+		{
+			name:   "passes - arguments satisfy example policy",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   policytest.SpecValidArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank_ValidExamplePolicy,
+			err:    nil,
+		},
+		{
+			name:   "passes - self-signed invocation doesn't require proof",
+			issuer: didtest.PersonaAlice,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: nil,
+			err:    nil,
+		},
+		{
+			name:   "passes - self-signed invocation accepts a delegation to itself",
+			issuer: didtest.PersonaAlice,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: []cid.Cid{delegationtest.TokenAliceAliceCID},
+			err:    nil,
+		},

-	t.Run("passes - only root", func(t *testing.T) {
-		t.Parallel()
+		// Fails
+		{
+			name:   "fails - no proof",
+			issuer: didtest.PersonaCarol,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofEmpty,
+			err:    invocation.ErrNoProof,
+		},
+		{
+			name:   "fails - missing referenced delegation",
+			issuer: didtest.PersonaCarol,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: []cid.Cid{cid.MustParse(missingTknCIDStr), delegationtest.TokenAliceBobCID},
+			err:    invocation.ErrMissingDelegation,
+		},
+		{
+			name:   "fails - referenced delegation expired",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank_InvalidExpired,
+			err:    invocation.ErrTokenInvalidNow,
+		},
+		{
+			name:   "fails - referenced delegation inactive",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank_InvalidInactive,
+			err:    invocation.ErrTokenInvalidNow,
+		},
+		{
+			name:   "fails - last (or only) delegation not root",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: []cid.Cid{delegationtest.TokenErinFrankCID, delegationtest.TokenDanErinCID, delegationtest.TokenCarolDanCID},
+			err:    invocation.ErrLastNotRoot,
+		},
+		{
+			name:   "fails - broken chain",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: []cid.Cid{delegationtest.TokenCarolDanCID, delegationtest.TokenAliceBobCID},
+			err:    invocation.ErrBrokenChain,
+		},
+		{
+			name:   "fails - first not issued to invoker",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: []cid.Cid{delegationtest.TokenBobCarolCID, delegationtest.TokenAliceBobCID},
+			err:    invocation.ErrBrokenChain,
+		},
+		{
+			name:   "fails - proof chain expands command",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank_InvalidExpandedCommand,
+			err:    invocation.ErrCommandNotCovered,
+		},
+		{
+			name:   "fails - invocation expands command",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.ExpandedCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank,
+			err:    invocation.ErrCommandNotCovered,
+		},
+		{
+			name:   "fails - inconsistent subject",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.ExpandedCommand,
+			args:   emptyArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank_InvalidSubject,
+			err:    invocation.ErrWrongSub,
+		},
+		{
+			name:   "fails - arguments don't satisfy example policy",
+			issuer: didtest.PersonaFrank,
+			cmd:    delegationtest.NominalCommand,
+			args:   policytest.SpecInvalidArguments,
+			proofs: delegationtest.ProofAliceBobCarolDanErinFrank_ValidExamplePolicy,
+			err:    invocation.ErrPolicyNotSatisfied,
+		},
+		{
+			name:   "fails - self-signed invocation refuses a delegation to itself for a different DID",
+			issuer: didtest.PersonaAlice,
+			cmd:    delegationtest.NominalCommand,
+			args:   emptyArguments,
+			proofs: []cid.Cid{delegationtest.TokenBobBobCID},
+			err:    invocation.ErrWrongSub,
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			tc.opts = append(tc.opts, invocation.WithArguments(tc.args))

-		testPasses(t, didtest.PersonaBob, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBob)
-	})
-
-	t.Run("passes - valid chain", func(t *testing.T) {
-		t.Parallel()
-
-		testPasses(t, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank)
-	})
-
-	t.Run("passes - proof chain attenuates command", func(t *testing.T) {
-		t.Parallel()
-
-		testPasses(t, didtest.PersonaFrank, delegationtest.AttenuatedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_ValidAttenuatedCommand)
-	})
-
-	t.Run("passes - invocation attenuates command", func(t *testing.T) {
-		t.Parallel()
-
-		testPasses(t, didtest.PersonaFrank, delegationtest.AttenuatedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank)
-	})
-
-	t.Run("passes - arguments satisfy empty policy", func(t *testing.T) {
-		t.Parallel()
-
-		testPasses(t, didtest.PersonaFrank, delegationtest.NominalCommand, policytest.SpecValidArguments, delegationtest.ProofAliceBobCarolDanErinFrank)
-	})
-
-	t.Run("passes - arguments satify example policy", func(t *testing.T) {
-		t.Parallel()
-
-		testPasses(t, didtest.PersonaFrank, delegationtest.NominalCommand, policytest.SpecValidArguments, delegationtest.ProofAliceBobCarolDanErinFrank_ValidExamplePolicy)
-	})
-
-	t.Run("fails - no proof", func(t *testing.T) {
-		t.Parallel()
-
-		testFails(t, invocation.ErrNoProof, didtest.PersonaCarol, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofEmpty)
-	})
-
-	t.Run("fails - missing referenced delegation", func(t *testing.T) {
-		t.Parallel()
-
-		missingTknCID, err := cid.Parse(missingTknCIDStr)
+			tkn, err := invocation.New(tc.issuer.DID(), tc.cmd, didtest.PersonaAlice.DID(), tc.proofs, tc.opts...)
 			require.NoError(t, err)

-		prf := []cid.Cid{missingTknCID, delegationtest.TokenAliceBobCID}
-		testFails(t, invocation.ErrMissingDelegation, didtest.PersonaCarol, delegationtest.NominalCommand, emptyArguments, prf)
-	})
+			t.Log(tkn.String())

-	t.Run("fails - referenced delegation expired", func(t *testing.T) {
-		t.Parallel()
+			err = tkn.ExecutionAllowed(delegationtest.GetDelegationLoader())

-		testFails(t, invocation.ErrTokenInvalidNow, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidExpired)
-
-	})
-
-	t.Run("fails - referenced delegation inactive", func(t *testing.T) {
-		t.Parallel()
-
-		testFails(t, invocation.ErrTokenInvalidNow, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidInactive)
-	})
-
-	t.Run("fails - last (or only) delegation not root", func(t *testing.T) {
-		t.Parallel()
-
-		prf := []cid.Cid{delegationtest.TokenErinFrankCID, delegationtest.TokenDanErinCID, delegationtest.TokenCarolDanCID}
-		testFails(t, invocation.ErrLastNotRoot, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, prf)
-	})
-
-	t.Run("fails - broken chain", func(t *testing.T) {
-		t.Parallel()
-
-		prf := []cid.Cid{delegationtest.TokenCarolDanCID, delegationtest.TokenAliceBobCID}
-		testFails(t, invocation.ErrBrokenChain, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, prf)
-	})
-
-	t.Run("fails - first not issued to invoker", func(t *testing.T) {
-		t.Parallel()
-
-		prf := []cid.Cid{delegationtest.TokenBobCarolCID, delegationtest.TokenAliceBobCID}
-		testFails(t, invocation.ErrBrokenChain, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, prf)
-	})
-
-	t.Run("fails - proof chain expands command", func(t *testing.T) {
-		t.Parallel()
-
-		testFails(t, invocation.ErrCommandNotCovered, didtest.PersonaFrank, delegationtest.NominalCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidExpandedCommand)
-	})
-
-	t.Run("fails - invocation expands command", func(t *testing.T) {
-		t.Parallel()
-
-		testFails(t, invocation.ErrCommandNotCovered, didtest.PersonaFrank, delegationtest.ExpandedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank)
-	})
-
-	t.Run("fails - inconsistent subject", func(t *testing.T) {
-		t.Parallel()
-
-		testFails(t, invocation.ErrWrongSub, didtest.PersonaFrank, delegationtest.ExpandedCommand, emptyArguments, delegationtest.ProofAliceBobCarolDanErinFrank_InvalidSubject)
-	})
-
-	t.Run("passes - arguments satisfy example policy", func(t *testing.T) {
-		t.Parallel()
-
-		testFails(t, invocation.ErrPolicyNotSatisfied, didtest.PersonaFrank, delegationtest.NominalCommand, policytest.SpecInvalidArguments, delegationtest.ProofAliceBobCarolDanErinFrank_ValidExamplePolicy)
-	})
-
-}
-
-func test(t *testing.T, persona didtest.Persona, cmd command.Command, args *args.Args, prf []cid.Cid, opts ...invocation.Option) error {
-	t.Helper()
-
-	opts = append(opts, invocation.WithArguments(args))
-
-	tkn, err := invocation.New(persona.DID(), cmd, didtest.PersonaAlice.DID(), prf, opts...)
-	require.NoError(t, err)
-
-	return tkn.ExecutionAllowed(delegationtest.GetDelegationLoader())
-}
-
-func testFails(t *testing.T, expErr error, persona didtest.Persona, cmd command.Command, args *args.Args, prf []cid.Cid, opts ...invocation.Option) {
-	err := test(t, persona, cmd, args, prf, opts...)
-	require.ErrorIs(t, err, expErr)
-}
-
-func testPasses(t *testing.T, persona didtest.Persona, cmd command.Command, args *args.Args, prf []cid.Cid, opts ...invocation.Option) {
-	err := test(t, persona, cmd, args, prf, opts...)
+			if tc.err != nil {
+				require.ErrorIs(t, err, tc.err)
+			} else {
 				require.NoError(t, err)
 			}
+		})
+	}
+}
+
+const (
+	nonce      = "6roDhGi0kiNriQAz7J3d+bOeoI/tj8ENikmQNbtjnD0"
+	subjectCmd = "/foo/bar"
+)
+
+func TestConstructors(t *testing.T) {
+	cmd, err := command.Parse(subjectCmd)
+	require.NoError(t, err)
+
+	iat, err := time.Parse(time.RFC3339, "2100-01-01T00:00:00Z")
+	require.NoError(t, err)
+
+	exp, err := time.Parse(time.RFC3339, "2200-01-01T00:00:00Z")
+	require.NoError(t, err)
+
+	t.Run("New", func(t *testing.T) {
+		tkn, err := invocation.New(
+			didtest.PersonaAlice.DID(), cmd, didtest.PersonaBob.DID(),
+			delegationtest.ProofAliceBob,
+			invocation.WithNonce([]byte(nonce)),
+			invocation.WithIssuedAt(iat),
+			invocation.WithExpiration(exp),
+			invocation.WithArgument("foo", "bar"),
+			invocation.WithMeta("baz", 123),
+		)
+		require.NoError(t, err)
+
+		require.False(t, tkn.IsSelfSigned())
+
+		data, err := tkn.ToDagJson(didtest.PersonaAlice.PrivKey())
+		require.NoError(t, err)
+
+		require.JSONEq(t, string(newDagJson), string(data))
+	})
+
+	t.Run("Self-Signed", func(t *testing.T) {
+		tkn, err := invocation.NewSelfSigned(
+			didtest.PersonaAlice.DID(), cmd,
+			invocation.WithNonce([]byte(nonce)),
+			invocation.WithIssuedAt(iat),
+			invocation.WithExpiration(exp),
+			invocation.WithArgument("foo", "bar"),
+			invocation.WithMeta("baz", 123),
+		)
+		require.NoError(t, err)
+
+		require.True(t, tkn.IsSelfSigned())
+
+		data, err := tkn.ToDagJson(didtest.PersonaAlice.PrivKey())
+		require.NoError(t, err)
+
+		require.JSONEq(t, string(selfsignedDagJson), string(data))
+	})
+}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Michael Muré	a7e698e4ec	toolkit/client: fix FindProof to handle self-delegation properly	2025-12-08 20:25:28 +01:00
Michael Muré	4b3a0c590a	invocation: add support for self-signed invocations (issuer=subject)	2025-12-08 18:11:58 +01:00
Michael Muré	4b99c9f1df	Merge pull request #118 from alanshaw/ash/fix/sort-tokens fix: sort tokens	2025-12-03 17:04:04 +01:00
Michael Muré	39694340cd	Merge pull request #117 from ucan-wg/ash/fix/licence-name fix: license name	2025-12-03 13:32:54 +01:00
Alan Shaw	e93e464977	fix: sort tokens	2025-12-03 12:19:27 +00:00
ash	823af27272	fix: license name License is Apache-2.0 OR MIT i.e. not "and"/"+" Signed-off-by: ash <alan138@gmail.com>	2025-11-02 22:02:28 +00:00
Michael Muré	70f039a654	update Readme	2025-10-29 15:48:15 +01:00
Michael Muré	d56db6722c	Merge pull request #115 from ucan-wg/tooling Add a somewhat complete toolkit	2025-08-07 14:39:42 +02:00
Michael Muré	0647e4ff8a	adjust the toolkit to the new location	2025-08-07 14:28:16 +02:00
Steve Moyer	06f478b9c3	feat(client): add delegation bundle(s) to client.pool	2025-08-05 16:57:19 +02:00
Michael Muré	4aedc4de39	client: add a convenient PrepareDelegation function	2025-08-05 16:57:19 +02:00
Michael Muré	0fd71612d3	exectx: DX improvement: catch proof chain issue early	2025-08-05 16:57:19 +02:00
Michael Muré	29ccdb700e	exectx: more tests	2025-08-05 16:57:19 +02:00
Michael Muré	2d031fdbdb	exectx: easy access to the root delegation	2025-08-05 16:57:19 +02:00
Michael Muré	1c4a0a9c81	exectx: add test for the main middleware, adjust some HTTP status	2025-08-05 16:57:19 +02:00
Michael Muré	df6dfee210	example: finish readme, small tuning	2025-08-05 16:57:19 +02:00
Michael Muré	c670433335	example: add sub-delegation	2025-08-05 16:57:19 +02:00
Michael Muré	55f38fef4a	add server/issuer/client examples, and lots of sanding	2025-08-05 16:57:19 +02:00
Michael Muré	1098a834fb	bearer: add some tests	2025-08-05 16:57:19 +02:00
Michael Muré	b95e525cfb	exectx: add a minimal middleware to extract the HTTP bearer, and make the UCAN ctx	2025-08-05 16:57:19 +02:00
Michael Muré	cc207aa202	bearer: add a package to add/extract a HTTP Authorisation bearer header	2025-08-05 16:57:19 +02:00
Michael Muré	41d679dfab	extargs: make the hash more convenient to use by directly returning the invocation.Option	2025-08-05 16:57:19 +02:00
Michael Muré	cc661f3936	infura requester: properly handle failure	2025-08-05 16:57:19 +02:00
Michael Muré	07d2745966	client,step1: add a KS compatible client, and a script to package tokens for PC step1	2025-08-05 16:57:19 +02:00
rarquevaux	cd9ee535ad	fix(ucanCtx): update test	2025-08-05 16:57:19 +02:00
rarquevaux	9e062b0cc7	fix(ucanCtx): pointer receiver and fix to verifyHttp	2025-08-05 16:57:19 +02:00
Michael Muré	cf3eb1b3f7	bump go-ucan	2025-08-05 16:57:19 +02:00
Michael Muré	3b6d70f47a	extargs: add ".inf" external args for arbitrary Infura args	2025-08-05 16:57:19 +02:00
Michael Muré	09c8815755	update go-ucan, with the now spec defined container https://github.com/ucan-wg/go-ucan/blob/main/pkg/container/SPEC.md	2025-08-05 16:57:19 +02:00
Michael Muré	f18ae547ab	Update server/extargs/http.go Co-authored-by: Steve Moyer <smoyer64@gmail.com>	2025-08-05 16:57:19 +02:00
Michael Muré	ad02aa8d4f	server: rename "bearer" package to "extargs"	2025-08-05 16:57:19 +02:00
Michael Muré	9c8e9f17fa	cli: update following go-ucan changes	2025-08-05 16:57:19 +02:00
Michael Muré	11b4352063	client: fix FindProof()	2025-08-05 16:57:19 +02:00
Michael Muré	b0783bf4a4	add a "core" implementation of an issuer	2025-08-05 16:57:19 +02:00
Michael Muré	2eeaaccc6d	client: follow go-ucan changes, improvements, example	2025-08-05 16:57:19 +02:00
Michael Muré	1187674a24	server: minor code fixes	2025-08-05 16:57:19 +02:00
Michael Muré	4c08b22c61	add an early version of a UCAN client	2025-08-05 16:57:19 +02:00
Michael Muré	174bf01c64	client: simpler FindProof()	2025-08-05 16:57:19 +02:00
Michael Muré	4167bf44bd	reorg packages, remove outdated server example	2025-08-05 16:57:19 +02:00
Michael Muré	4f4331b677	client: move FindProof testing directly where the code is	2025-08-05 16:57:19 +02:00
Michael Muré	547416e60d	client: improve/modularize	2025-08-05 16:57:19 +02:00
Michael Muré	6c1602507b	client: add a pool that can find a prood for an invocation	2025-08-05 16:57:19 +02:00
Michael Muré	6f4853cd2f	bearer,context: support hash verification of the computed args	2025-08-05 16:57:19 +02:00
Michael Muré	4c25456583	server: update deps	2025-08-05 16:57:19 +02:00
Michael Muré	83f3e4c3b0	server: add a readme	2025-08-05 16:57:19 +02:00
Michael Muré	1178e51b18	server: add a WIP middleware example	2025-08-05 16:57:19 +02:00
Michael Muré	3ec8f56412	Merge pull request #114 from ucan-wg/varsig-did Integrate go-varsig and go-did-it	2025-08-05 16:56:51 +02:00
Michael Muré	5891bdcd5d	update go-varsig, go-did-it, add missing resolution options	2025-08-05 16:54:18 +02:00
Michael Muré	6fb25481ce	delegation: add interop testing	2025-08-04 16:45:49 +02:00
Michael Muré	e7edccdd71	wire the DID resolution options	2025-07-31 17:49:01 +02:00
Michael Muré	33e8a8a821	Integrate go-varsig and go-did-it - go-varsig provides a varsig V1 implementation - go-did-it provides a complete and extensible DID implementation	2025-07-31 15:00:31 +02:00
Steve Moyer	947add66c5	Merge pull request #112 from ucan-wg/fix/invokedat-to-issued-at fix(invocation): iat incorrectly named InvokedAt instead of IssuedAt	2025-03-11 13:20:25 -04:00
Steve Moyer	3faf9d598c	fix(invocation): also update docs and examples	2025-03-11 13:14:53 -04:00
Steve Moyer	fbf55e98ba	Update token/invocation/options.go Co-authored-by: Michael Muré <batolettre@gmail.com> Signed-off-by: Steve Moyer <smoyer64@gmail.com>	2025-03-11 12:57:08 -04:00
Steve Moyer	05c2573d95	Update token/invocation/options.go Co-authored-by: Michael Muré <batolettre@gmail.com> Signed-off-by: Steve Moyer <smoyer64@gmail.com>	2025-03-11 12:56:49 -04:00
Steve Moyer	d7472621ce	Update token/invocation/invocation.go Co-authored-by: Michael Muré <batolettre@gmail.com> Signed-off-by: Steve Moyer <smoyer64@gmail.com>	2025-03-11 12:56:34 -04:00
Steve Moyer	7b44f480ee	fix(invocation): iat incorrectly named InvokedAt instead of IssuedAt	2025-03-11 12:41:24 -04:00
Michael Muré	5eb7b1a8e4	Merge pull request #111 from ucan-wg/MichaelMure-patch-1 container: typo fix in SPEC.md	2025-03-11 17:34:08 +01:00
Michael Muré	e91afe29d8	Update SPEC.md Signed-off-by: Michael Muré <batolettre@gmail.com>	2025-03-11 17:32:17 +01:00
Michael Muré	a82bce556f	Merge pull request #108 from ucan-wg/cont-test container: add a helper for test only	2025-02-27 15:00:47 +01:00
Michael Muré	a54d66afe5	Merge pull request #110 from ucan-wg/cleanups minor cleanups	2025-02-27 14:58:24 +01:00
Michael Muré	14a57d7391	Merge pull request #109 from ucan-wg/downgrade-libp2p deps: downgrade libp2p	2025-02-27 14:58:17 +01:00
Michael Muré	68469db91a	minor cleanups	2025-02-27 14:35:53 +01:00
Michael Muré	cc1d68be0c	deps: downgrade libp2p We only use go-libp2p for the crypto wrappers (github.com/libp2p/go-libp2p/core/crypto), and those have not changed in a while. We don't need the most recent version of go-libp2p. On the other hand, a too recent version can easily mess with project that aim for an older version of libp2p (often transitively). This PR gives some leeway for version resolution.	2025-02-27 14:28:23 +01:00
Michael Muré	6d3846ac62	container: add a helper for test only	2025-02-27 14:27:02 +01:00
Steve Moyer	6aa33b1547	Merge pull request #107 from ucan-wg/tinygo fix(policy): make 53-bit limits portable across platforms	2025-02-24 06:25:06 -05:00
Steve Moyer	9589cc8b44	feat(tinygo): make 53-bit limits portable across platforms	2025-02-21 11:03:33 -05:00
Michael Muré	879c0ab03b	Merge pull request #106 from ucan-wg/cont-type container: use the correct type in GetAllDelegations	2025-02-03 15:13:05 +01:00
Michael Muré	fe14765c8d	container: use the correct type in GetAllDelegations	2025-02-03 15:02:31 +01:00
Michael Muré	1b28cb49bf	Merge pull request #105 from ucan-wg/containertest rename testvectors into containertest to match previous namings	2025-01-29 15:04:33 +01:00
Michael Muré	e1fc838caf	rename testvectors into containertest to match previous namings	2025-01-29 14:46:01 +01:00
Michael Muré	f29b9e94fc	Merge pull request #104 from ucan-wg/bundle token: ditch the generic bundle in favor of specialized struct	2025-01-29 14:37:29 +01:00
Michael Muré	506ed21b94	token: ditch the generic bundle in favor of specialized struct It's kust cleaner that way, the generic has no upside.	2025-01-29 14:28:13 +01:00
Michael Muré	126177b9e5	Merge pull request #103 from ucan-wg/dlg-is delegation: add predicates to check if a delegation is a root or powe…	2025-01-29 14:11:29 +01:00
Michael Muré	2bddab8b0c	delegation: add predicates to check if a delegation is a root or powerline	2025-01-29 14:07:49 +01:00
Michael Muré	45ead12131	Merge pull request #102 from ucan-wg/cont-keep-sealed container: Reader should keep around and expose the sealed bytes	2025-01-23 18:06:41 +01:00
Michael Muré	9d5e170409	Merge pull request #101 from ucan-wg/cont-testing container: expose test vectors for easier testing	2025-01-23 18:06:27 +01:00
Michael Muré	9d047f038d	container: Reader should keep around and expose the sealed bytes	2025-01-23 17:13:10 +01:00
Michael Muré	4c5afcb084	container: expose test vectors for easier testing	2025-01-23 17:10:34 +01:00
				`@@ -0,0 +1 @@`
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