Evidence row 15864

What was observed

{
  "endpoints": [
    [
      "web",
      "https://gradusmusic.com/notation-api"
    ]
  ],
  "name": "Gradus Notation",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-08-26T04:03:30.17748Z",
        "status": "active",
        "statusChangedAt": "2026-08-26T04:03:30.17748Z",
        "updatedAt": "2026-08-26T04:03:30.17748Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Gradus Notation + Harmonic Analyzer + Engraver: music tools for any AI agent. Free, no auth.",
      "name": "com.gradusmusic/notation",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Override the API base URL. Defaults to https://gradusmusic.com.",
              "format": "string",
              "name": "GRADUS_NOTATION_API_BASE"
            },
            {
              "description": "Self-reported agent name sent in the X-Agent-Name header for telemetry attribution.",
              "format": "string",
              "name": "GRADUS_AGENT_NAME"
            }
          ],
          "identifier": "@gradusmusic/notation-mcp",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.8.0"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/delmas41/gradusnotation"
      },
      "title": "Gradus Notation",
      "version": "0.8.0",
      "websiteUrl": "https://gradusmusic.com/notation-api"
    }
  },
  "source": "mcp_registry",
  "summary": "Gradus Notation + Harmonic Analyzer + Engraver: music tools for any AI agent. Free, no auth."
}

What the leaf hashes

{"body":"c0314fa909260378367405b76d17bff3558f488297eb17e1ae9f8c58e45fc040","id":15864,"kind":"listing","method":"baseline/1","observed_us":1793025321683569,"prev":null,"subject":"mcp_registry:com.gradusmusic/notation","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. 0xf74a1eefc9be714fdbc96f00520b6d24c9e288c7d5b823eb0e7e4a54ccbb15b4
2. 0x125f0ba49a8ae20673cb643d06e8b1f993c7aa0c6a380496e63a3c4df725618f
3. 0x10e5e21dcd30427e36d5be9b0f16af77804890f2acbdf47046c534b3bcb1b086
4. 0x3f968fa1cb3f400f0b782c2848dbe15723111eb479e186984f57fb57b1f0f5ca
5. 0xa4d138a78ea8cea674d840a84f873746335a65b2cb024b321894025cf8f990a5
6. 0x47229abc8e7bd56a2bc69097ee15b1f7e5e7263f1d0620381a2da5954b80996f
7. 0x180708f06e1563671aebadc030609e83870c7d8c72c631ef3164055ed72e4a99
8. 0x3faa4393d71d51045e24f40ee4495a8b1109485a83c48dd9d14c526e117ac051
9. 0xd2f1ecc22f3b11fd6453ae8b6daf99dc6028b2c31a9bec5a05de02c500538013
10. 0x4bd369376314bee2a95c823d57f8971e2392f7a996a2b051fa001ce2eaad6d9d
11. 0xd987c6ca981b8dd0b1b11d115372fd199a82de229e1bc3db5a7a430cbc5575be
12. 0x4eeaa4735423e7633e0aaa6154804920315f945b1e4ceabd29282ec021cce244
13. 0x79695e4356ea25a2b58265a824698704cd2c743099ce2dca9e41384ce8f1a8c5
14. 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae