Evidence row 22319

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://touchstone.cv/mcp"
    ]
  ],
  "name": "Touchstone",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-07-10T10:58:24.846379Z",
        "status": "active",
        "statusChangedAt": "2026-07-10T10:58:24.846379Z",
        "updatedAt": "2026-07-10T10:58:24.846379Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Bitcoin-anchored, tamper-evident audit log for AI agents — record, disclose and verify actions.",
      "name": "cv.touchstone/touchstone",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Recorder public id (rec_...) to append to.",
              "isRequired": true,
              "name": "TOUCHSTONE_RECORDER"
            },
            {
              "description": "The subject Colony sub whose key signs entries.",
              "isRequired": true,
              "name": "TOUCHSTONE_SUBJECT"
            },
            {
              "description": "Touchstone API key (tsk_...) for the append/disclose REST calls.",
              "isRequired": true,
              "isSecret": true,
              "name": "TOUCHSTONE_API_KEY"
            },
            {
              "description": "Base64 Ed25519 seed. Signs locally — the key never leaves your machine. Use this or TOUCHSTONE_KEY_FILE.",
              "isSecret": true,
              "name": "TOUCHSTONE_SIGNING_KEY"
            },
            {
              "description": "Path to a file holding the base64 Ed25519 seed (alternative to TOUCHSTONE_SIGNING_KEY).",
              "name": "TOUCHSTONE_KEY_FILE"
            },
            {
              "description": "Override the Touchstone API base URL (defaults to https://touchstone.cv).",
              "name": "TOUCHSTONE_BASE_URL"
            }
          ],
          "identifier": "@touchstone-cv/mcp",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.3.1"
        }
      ],
      "remotes": [
        {
          "headers": [
            {
              "description": "A Touchstone API key as 'Bearer tsk_...' — an agent mints one with its own Colony identity (no browser); see https://touchstone.cv/developers",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization"
            }
          ],
          "type": "streamable-http",
          "url": "https://touchstone.cv/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/Touchstone-CV/touchstone-mcp"
      },
      "title": "Touchstone",
      "version": "1.1.0"
    }
  },
  "source": "mcp_registry",
  "summary": "Bitcoin-anchored, tamper-evident audit log for AI agents — record, disclose and verify actions."
}

What the leaf hashes

{"body":"b8ddd3ebac89e4fde4639973037b1adaa5b5937a24b29538c38ce90cc3662a46","id":22319,"kind":"listing","method":"baseline/1","observed_us":1793025341680253,"prev":null,"subject":"mcp_registry:cv.touchstone/touchstone","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. 0xe0413811ce0ed67dfc140976f22fc984bae32690eacc3f9a8867e8df3722e47a
2. 0x53997af7f5f9c4b9e7b61df1a2b89e45550be6df49644e9600b83c793da4bedd
3. 0x0e859b7b0c631c152e475a11c70fdeab4c3f21d558810b8888689de9360889ea
4. 0x38d1e2a1c8cc6e7359a8d37d8df0ed0efe558889f8fef8c0647ba2fa0fd6dee2
5. 0x7a62b546285ce8fd9e06c4e21baf2e91d99bf7f92688540630f79b3ab373b609
6. 0xfdd87f5232d1057121867c417afc258bf1780b33835a6195ef62c4aee9e2aa09
7. 0xa102e037923039c79ef4fbc1c76ed2d5cc9cab417fe41508ac2c541ab6267998
8. 0xe49cc5b3be9f52c74090709ee02147c1c996eaf6b53267252117683453d748cd
9. 0x16cb4ca51ff0730975eeaffa7ef65a08bd9a5708a11cdafec5b59f6ceff66b02
10. 0x6ff4120b0309d1afe829772edab6c960527c15f95727cac1d6a063da5f24cd85
11. 0x07a6fcdebada154e3a5a086ae2c78ad003011940759e5f38c005cc9b2ec3ef9d
12. 0x1cde596bd397df62b2525df79e5a761af7d1a292cbcfd283ea8977aecf9334e7
13. 0x3fcdf7fa32ccefe771eb57ae3015142065d64e3ce732fea7d11b9a3c99dde44f
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae