Evidence row 1245695

What was observed

{
  "endpoints": [
    [
      "web",
      "https://ai.contentrain.io/packages/mcp"
    ],
    [
      "mcp",
      "https://studio.contentrain.io/api/mcp/remote"
    ]
  ],
  "name": "Contentrain",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-30T11:46:45.813071Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T11:46:45.813071Z",
        "updatedAt": "2026-10-30T11:46:45.813071Z"
      }
    },
    "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": "3.11.19"
        }
      ],
      "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": "3.11.19",
      "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":"82f6992a35ce5c911406b177b08abfbd8d61a38ec2cdb153b10766bc35bab712","id":1245695,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793362519474878,"prev":780152,"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 2026-10-30 (243099 rows).

1. 0xace25240c07c7dd1dc1e698adb48955aec123fd5c110bdf5427a73233848c895
2. 0x83a449c393c06728a1e5696de1cc0374d2f187425314a2d3f7174f274330ca17
3. 0xad81cb2f0dede4c631666d0a6b24008ed02330534b59bcfb268f644955dbe405
4. 0xdcf4b2d91653fc699ab009f8bc5999ee5b8faa21071cd05ad615d1ab0023b7c8
5. 0x2e60c004de1c5ab070eed9b5487f95ffcc0006341d72a56f8a40d81db33b0db7
6. 0x13f8c306bae2f1afd786e97bd04e8bfa629ee191d786549d4789a634d78d8e08
7. 0xac702564ced8e3d5b13a81fba3e471f7e1e76cfd5728828c13595f8a674d6ab2
8. 0xe2117020ee65d953b8d87d28b8ed7e98a1c5cf9aa51cd31e27a256603c5e3704
9. 0x2b98cc6bbf8b803eb9a157941c952c04c296864c70241c42f475d5a13fe660e7
10. 0x4452a8396e747ebc80e888885825debca45cbd9c9866ec5aea11f16442ac2491
11. 0x4a421255b1067e9950c61438b9a0af43982710037e033134f119b4b2f8c209c6
12. 0xf50221ca652ce2d14481b6c066bd45668186607e6def3b9f0fdefc2c0b32f857
13. 0x0409d601a89a50f7eb5f4894cbcd524cb8f362e2e58241fd0551016000226646
14. 0x4943cf5368ac3124a50a8845e933556cda4f3f7ee527441ef6351afbceee79d8
15. 0xa0b1f6bc1eecfaf70581673c1a7f638b96d1769a5c578c460337f7db0dbe963e
16. 0x0c59b8770d2782eb535aefbb9b2f6810bab4757f51b37e00f5147713a1de9481
17. 0x61ef83255d34604cb052882568ca1d1386ac3cfb8284509715bc1734cff77831
18. 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861