Evidence row 535607

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": "2026-10-27T18:18:45.646181Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T18:18:45.646181Z",
        "updatedAt": "2026-10-27T18:18:45.646181Z"
      }
    },
    "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": "3.11.17"
        }
      ],
      "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": "3.11.17",
      "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":"a7e56da61b94b5539317d712ef5af9a83272080d271919a53162502b000ac3b0","id":535607,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793128343182659,"prev":27060,"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 2026-10-27 (273461 rows).

1. 0xc2313a5751d17a08521aa19fcd7547ea2f8c512f57ef66781c03940381081e01
2. 0x24d0c8d92ca354a4aebf0b539b11c5636c6ac7198f1eeeeac57650f5448f29ef
3. 0xec1079c36fabf7d45ddaf385a42ff9b2ef3b0c2031391c33c9d2ca880e631ee9
4. 0x7c9ea460b1ded6baa99388d0345405ec19acff82d7dadd98946eb75cbf17882a
5. 0xab0839b5391b9294fe9057fe87973927310c9f4f244e4bcfed0709bca869f3d4
6. 0x2591087db8d421fb0875a32d0d681b28b96292dd9a12511996c7871b675b646c
7. 0xc5947206acb12959ac6017eb044e2b1f0bfaad79af4b5261d4c07410f8afda54
8. 0xdf89df29c162f4976fd348de6ad9303a52b421c5e9f594f514a246391663fdce
9. 0x23b79faf7a742d2b7bbd049b1ab37b74c25935e41972f8033d7a3da431e420eb
10. 0x572d1cc74bcceba9fbf33b27255c0ccfc74c032291a71d0b93440bd4d8549348
11. 0xd42fabc45b614023fa5a8deff7b18538443a7a95af9b5415109cc428d27485e6
12. 0x09c148bbe62d15164b3840b798915bcd800d49ae022a1820cd04cc89b1b4e59a
13. 0xb48b088603004f0a5232faea4acd65999cbb4832f4c15b0098e853144cb91655
14. 0x077edf0f29e2a3aa19c876439830696b88f0236fd0b2a3c43c76f38cdd29bb2b
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4