Evidence row 293987

What was observed

{
  "endpoints": [
    [
      "web",
      "https://github.com/MysterionRise/pubchem-finder"
    ]
  ],
  "name": "PubChem Finder",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-26T20:49:07.308446Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T20:49:07.308446Z",
        "updatedAt": "2026-10-26T20:49:07.308446Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Search PubChem by structure: a local similarity/substructure index, live PubChem data, RDKit tools",
      "name": "io.github.MysterionRise/pubchem-finder",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Data directory for the local index and the PubChem response cache (default: the platform's user data directory)",
              "format": "filepath",
              "name": "PUBCHEM_FINDER_HOME"
            }
          ],
          "identifier": "pubchem-finder",
          "packageArguments": [
            {
              "type": "positional",
              "value": "mcp",
              "valueHint": "mcp"
            }
          ],
          "registryBaseUrl": "https://pypi.org",
          "registryType": "pypi",
          "runtimeHint": "uvx",
          "transport": {
            "type": "stdio"
          },
          "version": "2.1.0"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/MysterionRise/pubchem-finder"
      },
      "title": "PubChem Finder",
      "version": "2.1.0",
      "websiteUrl": "https://github.com/MysterionRise/pubchem-finder"
    }
  },
  "source": "mcp_registry",
  "summary": "Search PubChem by structure: a local similarity/substructure index, live PubChem data, RDKit tools"
}

What the leaf hashes

{"body":"d52d32efd610548a09b63ae82bf015de5c61b0b00d539aedee016461730de5c7","id":293987,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793049820156233,"prev":null,"subject":"mcp_registry:io.github.MysterionRise/pubchem-finder","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. 0xff2ed4813e01c8b640d62c0527f8615b6d42e40255f24cbd0385dfacd5e27add
2. 0xf3c97a0edb3c9fa08484ef36cb4b6f5df332f7d839be9f45ae8ab7f8b762ce4b
3. 0x0730d5a2b838eb42201c0faac6eb6de9d9f507af4966dfc18b5b338ef9599a4c
4. 0x5b934a40a34e22b9cc856056dd1bd75b503e3bf8641b59ddb9c695d0a56ec3f0
5. 0xc058a25414559013d227eb1bce482329d0ea59e142a37672b2aec9c8e007234b
6. 0x98b41f8fbdb044f29a3e83996a5ea2b60ff5bbd1fb7a77175cc2c17f9ae3eefc
7. 0x523c5aaf261c1204a203e8c2144172c77d7d63dc0bba9bf91e4262027afe7b6a
8. 0x5aabf3ce9106e0b9528ea34d76d3ca3c9007cd933e882c7f5501adde0bcb50b5
9. 0xfc83ee4738c633e4c5c1f727c601153a2afb21d524ceb83f6e84b881a41b3d93
10. 0x301cb2348a778b944d1bff0de6fa4d710487d6a5b6fb61608bd9e3d5df1f098a
11. 0xf0e3125fdb80cc0fbd2c1ed68c94834a74c7a387a89a1ab6de49183f24f78649
12. 0xbd264414f726ecec85a6b231446a7d5db56b5a61f8c3f471b7913d982daa291d
13. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae