Evidence row 27060

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://studio.contentrain.io/api/mcp/remote"
    ],
    [
      "web",
      "https://ai.contentrain.io/packages/mcp"
    ]
  ],
  "name": "Contentrain",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-24T13:19:54.50123Z",
        "status": "active",
        "statusChangedAt": "2026-10-24T13:19:54.50123Z",
        "updatedAt": "2026-10-24T13:19:54.50123Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Git-native content governance for AI agents — 27 deterministic MCP tools over stdio and HTTP.",
      "name": "io.github.Contentrain/contentrain",
      "packages": [
        {
          "identifier": "@contentrain/mcp",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "3.11.16"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://studio.contentrain.io/api/mcp/remote"
        },
        {
          "headers": [
            {
              "description": "Bearer token using a Contentrain Studio MCP Cloud API key.",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization"
            }
          ],
          "type": "streamable-http",
          "url": "https://studio.contentrain.io/api/mcp/v1/{project_id}/mcp",
          "variables": {
            "project_id": {
              "description": "Contentrain Studio project ID for the MCP Cloud endpoint.",
              "isRequired": true
            }
          }
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "packages/mcp",
        "url": "https://github.com/Contentrain/ai"
      },
      "title": "Contentrain",
      "version": "3.11.16",
      "websiteUrl": "https://ai.contentrain.io/packages/mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "Git-native content governance for AI agents — 27 deterministic MCP tools over stdio and HTTP."
}

What the leaf hashes

{"body":"4584c554e91a6ae9fddc933b914f2621722bc40315702352043d6705bf15c8a4","id":27060,"kind":"listing","method":"baseline/1","observed_us":1793025356871824,"prev":null,"subject":"mcp_registry:io.github.Contentrain/contentrain","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. 0xf54588a0070d0eee016756d6873898c7fe2b2ac83c345c5781b54c26088d7c2a
2. 0x3f61051ad23acdd67562c0775b76581a43e82cfb7a07fc2dced60c73df69650e
3. 0x78828de2ac88e636ce7bbcffb65f22fee8e5e8821fccd488ae5da3b2c7a713bb
4. 0xbab0335184eb38b9b3ca0683b8c4de33c19752c786e38b91b6fa35dd1298beeb
5. 0xda3ef906381f7dd17f41a99d9f578220474fd80ca93000dd004b4c10afb0df6c
6. 0x9d498f06a77cc70b0f457cd5c8eb427fea4a86060b3f7e109bcd62deaba43602
7. 0x09a740d09397b15c20522395e740a4969efb497e3c24db2c32f7f6b921db8b4a
8. 0x26f07f0af4c8911df13cb157ee560f9e1ce16c07dd41975c492712e6680d048f
9. 0x3d82e9ada7c7d17c361b62c6ce33f9647e7db0d1c163d3a3aa6538d4c298b9bd
10. 0xf7bdc34efb83dc5cbbcb5071558fe87a477728e005b9d180c492e090371b2357
11. 0xd1f6cbd0d3ee44ebe2e23b42e7f1822bbdf0afd342375323b5d4f8bc89cd943a
12. 0x86ae35463d854f3938d986999aa8497e14f0ba2aa6f39a269e1e6d1134f9b847
13. 0x79695e4356ea25a2b58265a824698704cd2c743099ce2dca9e41384ce8f1a8c5
14. 0xd769d41500075835c3b2f9184d223699fb983fd05c29fbcb44d964abc7ee380d
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae