diff --git a/dev/bench/data.js b/dev/bench/data.js
index 92dac72..42efcf1 100644
--- a/dev/bench/data.js
+++ b/dev/bench/data.js
@@ -1,5 +1,5 @@
 window.BENCHMARK_DATA = {
-  "lastUpdate": 1734017829698,
+  "lastUpdate": 1736425919066,
   "repoUrl": "https://github.com/ucan-wg/go-ucan",
   "entries": {
     "Go Benchmark": [
@@ -28634,6 +28634,654 @@ window.BENCHMARK_DATA = {
             "extra": "20096 times\n4 procs"
           }
         ]
+      },
+      {
+        "commit": {
+          "author": {
+            "email": "batolettre@gmail.com",
+            "name": "Michael Muré",
+            "username": "MichaelMure"
+          },
+          "committer": {
+            "email": "noreply@github.com",
+            "name": "GitHub",
+            "username": "web-flow"
+          },
+          "distinct": true,
+          "id": "b7ddead7c881da69ac8064588fc33dc46c9abc40",
+          "message": "Merge pull request #96 from ucan-wg/container-spec\n\ncontainer: add a specification",
+          "timestamp": "2025-01-09T13:30:48+01:00",
+          "tree_id": "0db0ca387e1b3e138906b4fef63c863379b3616f",
+          "url": "https://github.com/ucan-wg/go-ucan/commit/b7ddead7c881da69ac8064588fc33dc46c9abc40"
+        },
+        "date": 1736425918610,
+        "tool": "go",
+        "benches": [
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_write",
+            "value": 5220,
+            "unit": "ns/op\t   16896 B/op\t      34 allocs/op",
+            "extra": "224472 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_write - ns/op",
+            "value": 5220,
+            "unit": "ns/op",
+            "extra": "224472 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_write - B/op",
+            "value": 16896,
+            "unit": "B/op",
+            "extra": "224472 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_write - allocs/op",
+            "value": 34,
+            "unit": "allocs/op",
+            "extra": "224472 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_read",
+            "value": 968898,
+            "unit": "ns/op\t  138459 B/op\t    2593 allocs/op",
+            "extra": "1212 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_read - ns/op",
+            "value": 968898,
+            "unit": "ns/op",
+            "extra": "1212 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_read - B/op",
+            "value": 138459,
+            "unit": "B/op",
+            "extra": "1212 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Bytes_read - allocs/op",
+            "value": 2593,
+            "unit": "allocs/op",
+            "extra": "1212 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_write",
+            "value": 193239,
+            "unit": "ns/op\t  823281 B/op\t      52 allocs/op",
+            "extra": "5864 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_write - ns/op",
+            "value": 193239,
+            "unit": "ns/op",
+            "extra": "5864 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_write - B/op",
+            "value": 823281,
+            "unit": "B/op",
+            "extra": "5864 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_write - allocs/op",
+            "value": 52,
+            "unit": "allocs/op",
+            "extra": "5864 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_read",
+            "value": 1041547,
+            "unit": "ns/op\t  182507 B/op\t    2648 allocs/op",
+            "extra": "1195 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_read - ns/op",
+            "value": 1041547,
+            "unit": "ns/op",
+            "extra": "1195 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_read - B/op",
+            "value": 182507,
+            "unit": "B/op",
+            "extra": "1195 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/BytesGzipped_read - allocs/op",
+            "value": 2648,
+            "unit": "allocs/op",
+            "extra": "1195 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_write",
+            "value": 9690,
+            "unit": "ns/op\t   21264 B/op\t      36 allocs/op",
+            "extra": "122176 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_write - ns/op",
+            "value": 9690,
+            "unit": "ns/op",
+            "extra": "122176 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_write - B/op",
+            "value": 21264,
+            "unit": "B/op",
+            "extra": "122176 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_write - allocs/op",
+            "value": 36,
+            "unit": "allocs/op",
+            "extra": "122176 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_read",
+            "value": 986885,
+            "unit": "ns/op\t  140529 B/op\t    2595 allocs/op",
+            "extra": "1184 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_read - ns/op",
+            "value": 986885,
+            "unit": "ns/op",
+            "extra": "1184 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_read - B/op",
+            "value": 140529,
+            "unit": "B/op",
+            "extra": "1184 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPadding_read - allocs/op",
+            "value": 2595,
+            "unit": "allocs/op",
+            "extra": "1184 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_write",
+            "value": 221285,
+            "unit": "ns/op\t  828226 B/op\t      55 allocs/op",
+            "extra": "5312 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_write - ns/op",
+            "value": 221285,
+            "unit": "ns/op",
+            "extra": "5312 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_write - B/op",
+            "value": 828226,
+            "unit": "B/op",
+            "extra": "5312 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_write - allocs/op",
+            "value": 55,
+            "unit": "allocs/op",
+            "extra": "5312 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_read",
+            "value": 1023581,
+            "unit": "ns/op\t  189056 B/op\t    2657 allocs/op",
+            "extra": "1161 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_read - ns/op",
+            "value": 1023581,
+            "unit": "ns/op",
+            "extra": "1161 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_read - B/op",
+            "value": 189056,
+            "unit": "B/op",
+            "extra": "1161 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64StdPaddingGzipped_read - allocs/op",
+            "value": 2657,
+            "unit": "allocs/op",
+            "extra": "1161 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_write",
+            "value": 9680,
+            "unit": "ns/op\t   21264 B/op\t      36 allocs/op",
+            "extra": "124225 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_write - ns/op",
+            "value": 9680,
+            "unit": "ns/op",
+            "extra": "124225 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_write - B/op",
+            "value": 21264,
+            "unit": "B/op",
+            "extra": "124225 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_write - allocs/op",
+            "value": 36,
+            "unit": "allocs/op",
+            "extra": "124225 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_read",
+            "value": 974874,
+            "unit": "ns/op\t  140525 B/op\t    2595 allocs/op",
+            "extra": "1215 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_read - ns/op",
+            "value": 974874,
+            "unit": "ns/op",
+            "extra": "1215 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_read - B/op",
+            "value": 140525,
+            "unit": "B/op",
+            "extra": "1215 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URL_read - allocs/op",
+            "value": 2595,
+            "unit": "allocs/op",
+            "extra": "1215 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_write",
+            "value": 232192,
+            "unit": "ns/op\t  828226 B/op\t      55 allocs/op",
+            "extra": "4867 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_write - ns/op",
+            "value": 232192,
+            "unit": "ns/op",
+            "extra": "4867 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_write - B/op",
+            "value": 828226,
+            "unit": "B/op",
+            "extra": "4867 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_write - allocs/op",
+            "value": 55,
+            "unit": "allocs/op",
+            "extra": "4867 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_read",
+            "value": 1036389,
+            "unit": "ns/op\t  188046 B/op\t    2656 allocs/op",
+            "extra": "1159 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_read - ns/op",
+            "value": 1036389,
+            "unit": "ns/op",
+            "extra": "1159 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_read - B/op",
+            "value": 188046,
+            "unit": "B/op",
+            "extra": "1159 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkContainerSerialisation/Base64URLGzip_read - allocs/op",
+            "value": 2656,
+            "unit": "allocs/op",
+            "extra": "1159 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkGlob",
+            "value": 50.98,
+            "unit": "ns/op\t       0 B/op\t       0 allocs/op",
+            "extra": "23673882 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkGlob - ns/op",
+            "value": 50.98,
+            "unit": "ns/op",
+            "extra": "23673882 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkGlob - B/op",
+            "value": 0,
+            "unit": "B/op",
+            "extra": "23673882 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkGlob - allocs/op",
+            "value": 0,
+            "unit": "allocs/op",
+            "extra": "23673882 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bool",
+            "value": 24.23,
+            "unit": "ns/op\t       1 B/op\t       1 allocs/op",
+            "extra": "47547073 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bool - ns/op",
+            "value": 24.23,
+            "unit": "ns/op",
+            "extra": "47547073 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bool - B/op",
+            "value": 1,
+            "unit": "B/op",
+            "extra": "47547073 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bool - allocs/op",
+            "value": 1,
+            "unit": "allocs/op",
+            "extra": "47547073 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/string",
+            "value": 43.16,
+            "unit": "ns/op\t      16 B/op\t       1 allocs/op",
+            "extra": "27214452 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/string - ns/op",
+            "value": 43.16,
+            "unit": "ns/op",
+            "extra": "27214452 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/string - B/op",
+            "value": 16,
+            "unit": "B/op",
+            "extra": "27214452 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/string - allocs/op",
+            "value": 1,
+            "unit": "allocs/op",
+            "extra": "27214452 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bytes",
+            "value": 89.43,
+            "unit": "ns/op\t      52 B/op\t       3 allocs/op",
+            "extra": "13188470 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bytes - ns/op",
+            "value": 89.43,
+            "unit": "ns/op",
+            "extra": "13188470 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bytes - B/op",
+            "value": 52,
+            "unit": "B/op",
+            "extra": "13188470 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/bytes - allocs/op",
+            "value": 3,
+            "unit": "allocs/op",
+            "extra": "13188470 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/map",
+            "value": 1997,
+            "unit": "ns/op\t    2248 B/op\t      37 allocs/op",
+            "extra": "559654 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/map - ns/op",
+            "value": 1997,
+            "unit": "ns/op",
+            "extra": "559654 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/map - B/op",
+            "value": 2248,
+            "unit": "B/op",
+            "extra": "559654 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkAny/map - allocs/op",
+            "value": 37,
+            "unit": "allocs/op",
+            "extra": "559654 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkSchemaLoad",
+            "value": 15161,
+            "unit": "ns/op\t   14577 B/op\t     163 allocs/op",
+            "extra": "78384 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkSchemaLoad - ns/op",
+            "value": 15161,
+            "unit": "ns/op",
+            "extra": "78384 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkSchemaLoad - B/op",
+            "value": 14577,
+            "unit": "B/op",
+            "extra": "78384 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkSchemaLoad - allocs/op",
+            "value": 163,
+            "unit": "allocs/op",
+            "extra": "78384 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/FromDagJson",
+            "value": 114692,
+            "unit": "ns/op\t   15318 B/op\t     383 allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/FromDagJson - ns/op",
+            "value": 114692,
+            "unit": "ns/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/FromDagJson - B/op",
+            "value": 15318,
+            "unit": "B/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/FromDagJson - allocs/op",
+            "value": 383,
+            "unit": "allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Seal",
+            "value": 53658,
+            "unit": "ns/op\t    9752 B/op\t     214 allocs/op",
+            "extra": "22468 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Seal - ns/op",
+            "value": 53658,
+            "unit": "ns/op",
+            "extra": "22468 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Seal - B/op",
+            "value": 9752,
+            "unit": "B/op",
+            "extra": "22468 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Seal - allocs/op",
+            "value": 214,
+            "unit": "allocs/op",
+            "extra": "22468 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Unseal",
+            "value": 102618,
+            "unit": "ns/op\t   14373 B/op\t     314 allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Unseal - ns/op",
+            "value": 102618,
+            "unit": "ns/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Unseal - B/op",
+            "value": 14373,
+            "unit": "B/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/Unseal - allocs/op",
+            "value": 314,
+            "unit": "allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/ToDagJson",
+            "value": 58527,
+            "unit": "ns/op\t   15264 B/op\t     254 allocs/op",
+            "extra": "19677 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/ToDagJson - ns/op",
+            "value": 58527,
+            "unit": "ns/op",
+            "extra": "19677 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/ToDagJson - B/op",
+            "value": 15264,
+            "unit": "B/op",
+            "extra": "19677 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_buffers/ToDagJson - allocs/op",
+            "value": 254,
+            "unit": "allocs/op",
+            "extra": "19677 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/FromDagJsonReader",
+            "value": 111300,
+            "unit": "ns/op\t   15269 B/op\t     382 allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/FromDagJsonReader - ns/op",
+            "value": 111300,
+            "unit": "ns/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/FromDagJsonReader - B/op",
+            "value": 15269,
+            "unit": "B/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/FromDagJsonReader - allocs/op",
+            "value": 382,
+            "unit": "allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/SealWriter",
+            "value": 55221,
+            "unit": "ns/op\t    9272 B/op\t     245 allocs/op",
+            "extra": "21744 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/SealWriter - ns/op",
+            "value": 55221,
+            "unit": "ns/op",
+            "extra": "21744 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/SealWriter - B/op",
+            "value": 9272,
+            "unit": "B/op",
+            "extra": "21744 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/SealWriter - allocs/op",
+            "value": 245,
+            "unit": "allocs/op",
+            "extra": "21744 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/UnsealReader",
+            "value": 100014,
+            "unit": "ns/op\t   14373 B/op\t     314 allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/UnsealReader - ns/op",
+            "value": 100014,
+            "unit": "ns/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/UnsealReader - B/op",
+            "value": 14373,
+            "unit": "B/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/UnsealReader - allocs/op",
+            "value": 314,
+            "unit": "allocs/op",
+            "extra": "10000 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/ToDagJsonReader",
+            "value": 58208,
+            "unit": "ns/op\t   13232 B/op\t     248 allocs/op",
+            "extra": "20715 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/ToDagJsonReader - ns/op",
+            "value": 58208,
+            "unit": "ns/op",
+            "extra": "20715 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/ToDagJsonReader - B/op",
+            "value": 13232,
+            "unit": "B/op",
+            "extra": "20715 times\n4 procs"
+          },
+          {
+            "name": "BenchmarkRoundTrip/via_streaming/ToDagJsonReader - allocs/op",
+            "value": 248,
+            "unit": "allocs/op",
+            "extra": "20715 times\n4 procs"
+          }
+        ]
       }
     ]
   }