Evidence row 52577

What was observed

{
  "endpoints": [
    [
      "web",
      "https://certnode.io/ai-provenance"
    ]
  ],
  "name": "io.github.srbryant86/mcp-server",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-04-28T05:00:22.572839Z",
        "status": "active",
        "statusChangedAt": "2026-04-28T05:00:22.572839Z",
        "updatedAt": "2026-04-28T05:00:22.572839Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Sign AI output for EU AI Act + FRE 902 compliance, verify content authenticity provenance",
      "name": "io.github.srbryant86/mcp-server",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "CertNode API key from https://certnode.io/dashboard/api-keys (required for sign_ai_output and authenticated verification)",
              "format": "string",
              "isSecret": true,
              "name": "CERTNODE_API_KEY"
            },
            {
              "description": "CertNode API base URL. Defaults to https://certnode.io/api/v1",
              "format": "string",
              "name": "CERTNODE_API_URL"
            }
          ],
          "identifier": "@certnode/mcp-server",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "1.2.2"
        }
      ],
      "version": "1.2.2",
      "websiteUrl": "https://certnode.io/ai-provenance"
    }
  },
  "source": "mcp_registry",
  "summary": "Sign AI output for EU AI Act + FRE 902 compliance, verify content authenticity provenance"
}

What the leaf hashes

{"body":"1aa204c4d32b4939ce7020456372674467956e68332a88e40d4bfa77e945afd1","id":52577,"kind":"listing","method":"baseline/1","observed_us":1793025420024454,"prev":null,"subject":"mcp_registry:io.github.srbryant86/mcp-server","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xb9c9dad5b29b1354f2698222381b0a4eb2c39c1d1c03c67b951e2cfd83e18d4c
2. 0x6c91552ac99041b38d3ee578c75e7f976a768a1cc860977db3ba47dbcfc74483
3. 0xcd6d0eaef87098924f9478348a548f5766cd6d034778e101f6235bbecb06d250
4. 0xc555969a0ff3e156b924356c9d2f092df721894958860e6363f1bcf3d72ee0a6
5. 0xf3f6be521d8ff2a086c5c9c7a76ba3e7505cf5f6409202dfa86a0808954cdcbb
6. 0x58ff4734a95aca1456d067381cae9be3ab6fcab6422f3d16d39c3cc91d49e3e5
7. 0xf7ae6aed8fd7f2ff89293efbd80659f698cd621061934a2c6b15ac0856e67d07
8. 0x0bfd60566b0f5018bdce307516f1dccff72f2211d4efd6cdfaeef5374875ea35
9. 0x789967d859513eeca8cb1b249636cadc2a2245903ca33d339e7898dfae1b1c97
10. 0x818cc59d34ccfe2393f92012bc86601afd9f288f2f960767521cbd3053a3333c
11. 0xd0a8fcd7581320df765e293ac18ecdb0c84895304e75682f6c130e9b5c6b0ed8
12. 0x1a61f9ab4a9304db8146c466be341271a345718ebf06b718e0f0dd9f347d2fbd
13. 0x2f43fe2b2533a5f40c107c114e458e226102f5f8ae91f097e964345880e30928
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae