Evidence row 1287990

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/art/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/art"
    ]
  ],
  "name": "Art",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-30T19:58:54.804917Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T19:58:54.804917Z",
        "updatedAt": "2026-10-30T19:58:54.804917Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Art MCP — Metropolitan Museum of Art Collection API (free, no auth)",
      "name": "io.github.pipeworx-io/art",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Optional Pipeworx API key. Without it calls are anonymous and capped daily; a free key raises the cap.",
              "isSecret": true,
              "name": "PIPEWORX_API_KEY"
            }
          ],
          "identifier": "@pipeworx/mcp-art",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/art/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-art"
      },
      "title": "Art",
      "version": "0.2.1",
      "websiteUrl": "https://pipeworx.io/packs/art"
    }
  },
  "source": "mcp_registry",
  "summary": "Art MCP — Metropolitan Museum of Art Collection API (free, no auth)"
}

What the leaf hashes

{"body":"b3c1a800f4d1d75998b420037c8f1eb537e72fb38caab1cd506985ada92a5e27","id":1287990,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793391338844071,"prev":1000941,"subject":"mcp_registry:io.github.pipeworx-io/art","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0x3394bc7cf659da36a6189048460130f0ab06c705278aed090d54d5c013d2a25d
2. 0xff61e84ef5fd2819b76a793438e239bc636f9cd5318a21e0322867a89b357ad2
3. 0xf60292a7a2121c8c951a3fc2a034f614c3c35c17a2a334bf39af0413338c214b
4. 0xd7806ba44c055ec871700717880c0e548c2201327506cf36875277848cf6aba9
5. 0xbb6de7b9c0335324c8bcc6178a23c101d6ac07f9887ce9ff2f53729993f454fb
6. 0xd501c5e283effad23f84850228d183ee695a03fca106ba23c3f6b9bcef31cda8
7. 0xdf8060d79c4697cb9fd4067f205ec5d2983c9f68d0cf897298b245eabbe6aae6
8. 0xf21f137f7ccb26c44944fb408e5681e2700f347a3715b8c4c29d127321a80227
9. 0xb17223bbcf5013403aae3e7acc0bf3fcc6f6248124b68f8c055f928f1423e34e
10. 0x94850afb28b83f53880e6dd4172460b4ab8160f8596e51307c43c791d8979258
11. 0x0dae6a465e4b7ee5915f94857ac911ff4930eec46c6c84eae19ccb564619f79a
12. 0xfa2de483f2f9af82b5329769beb44392bed26536e7e15e295f86b526f33f9996
13. 0xa731ea0a53ef052371d2f4f5c1c8f41649e1bf40a860f84529dbcb9601498e0d
14. 0xc1162ffd606c8e0e72ce94a16332c19bf77c27df8032f71c95d5690246968bbe
15. 0x6222037db785cc797fc8809e52e551d945c928d389b7ac947c037fb9af818562
16. 0x50ca74d7c8f26a46e9c3b8fb5e7f9ebcdfdcc1b7c863db3b6d2b7c12e24ca66f
17. 0xb0c9ef42e725578748f3119c9dbebf2fc437266bda013df29f98ed3ebe621403
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861