Evidence row 2564394

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://cats-ats.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/cats-ats/"
    ]
  ],
  "name": "CATS MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-03T09:55:04.728021Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T09:55:04.728021Z",
        "updatedAt": "2026-11-03T09:55:04.728021Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read CATS candidates, jobs and pipelines, and make explicitly confirmed recruiting changes.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://usefulapi.io/icon.svg"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "256x256"
          ],
          "src": "https://usefulapi.io/icon-256.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulapi.io/icon-512.png"
        }
      ],
      "name": "io.usefulapi/cats-ats",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://cats-ats.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/cats-ats",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "CATS MCP by usefulapi",
      "version": "1.7.0",
      "websiteUrl": "https://usefulapi.io/cats-ats/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read CATS candidates, jobs and pipelines, and make explicitly confirmed recruiting changes."
}

What the leaf hashes

{"body":"b9023a3b9991b79b41ff7fa9ebe85994d95d1b2050e0b94ca605c682ab443a13","id":2564394,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793701159207866,"prev":2546289,"subject":"mcp_registry:io.usefulapi/cats-ats","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-03 (425475 rows).

1. 0xf27549f6804a3eb4e227d4a58da828c5346eaa61fe4962cb806746e22a817352
2. 0x737ec21c6e396cfc33029badffb08e597a1e20c38813049169d2d1900ef7b2ad
3. 0x6f340b7a6806bf7a5c969fb7c885f3b4bcd6175ec7ef0d2fb90501ccade0cd74
4. 0x2ae1069448ab6ba991c26b69a11a01c9887c07de60059df44d2445aa7737bf59
5. 0xb75405c09a826c93f5ee28049de0e93206cc54585ebaebe5408bf9fcd96ca8f7
6. 0x170399ce9f15eb269206932ff9b2cbc118864ee9ceca4d81c05f438cd2294a88
7. 0x409fb11c966bde4de4d3e408c60f50b22007e2e00ba19d4d69ffcaeacf605016
8. 0xb56a9ab4d05067370704d5a6002f66b2f95980b83d8f16bd65697fee9d8dc0aa
9. 0x98c7fe5a2225fd53fc5e24df658757a8c7dd14c2d55f7505fd0716d45daa8cf0
10. 0x91c62a8064ab2b136f10f84de485d653a84f41949517b07b978bde1400602e41
11. 0xec2ad0073f4374f52e12f097daf15be6762089a62c75640abfee739b422ae823
12. 0xfe18618faf14f5f3247bf408decfc900cc66a3a6e03adbedbb53236cb4b3892f
13. 0x0ea954b95dc4e26bb21744a0d424db9da57e2da18185ea0406675355cc4a2429
14. 0xc456b1c820d564945f129896256bb07afc74e79940a2da0ea6e9440718d856c7
15. 0xa29933ab8020ad948edbcf3e65194e73a6b113a0063231c1105b56c2d59ab97d
16. 0xd60b16e6a71fbffc93a233ee89f916e50c0206a56f52c852b85e5a246b6b417c
17. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7