Evidence row 1537720

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": "2026-10-31T20:57:34.110769Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T20:57:34.110769Z",
        "updatedAt": "2026-10-31T20:57:34.110769Z"
      }
    },
    "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": "1.4.0",
      "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":"965d748e2b122241bc7814acb54efbcaf8243d47ccdf0ec1e8aec6d1eeaff2f9","id":1537720,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793481416672652,"prev":1500047,"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 2026-10-31 (246033 rows).

1. 0x1263793652ac284196c7e0bc3bdc0d4b691d59d8b9778ec5273cdbe9fd774e46
2. 0x6cb5498eba31a50ee6b541f534da578a58cd11266cb67393946632e389539699
3. 0xca6e1eb23ecdd7038d6743350ec9c44c742ccbe8f35f831d8976f90e70c4ad44
4. 0x9c4e0417fa9aee04115e47bdcfa86564f3c94398c6f35bce1c9c36071134aa31
5. 0x9f7b02e92c56e15fef86a8479e591ced5a6657a6974050977e7912c2940dee97
6. 0x5dd0de6d9b227d8dedaf04bf0c18ee9f70257add95ccbae633a550de2325c63f
7. 0x832750f6f98b9220282e7e3a67a9d4cfcf095302edd37dd22630e2a1f66902c2
8. 0x51af9f0f427d3f650ddc3f2f0fc1730e43a9a639ad42c415da054f11b891969f
9. 0xff61af020f72dc85c54917095b786557c0d6a9a3301a102b49eadcecc621dd6c
10. 0x8aaa255f90b3f7cea74a70580cc5c1fa631f2457973584440d2cb97c051ce162
11. 0x1079fedb4fe966296f1a428fb5e70f49f8148b6745299582c2e3d50710f3b415
12. 0x3506f733503d54d5526cec588d9e8b1f94f6fb7fc812cbfc49cabc52200335f5
13. 0xf2b49afd37f6c7a074cb7e2e9bd6248a3e1bcb90308acf1af6b3be8a3c1b7cfe
14. 0x500efd0d65e793a02397af46769412226d4deefe24ac497b68f3a32f6828638e
15. 0x95ec49fc7f2c7be30422eaa1d0d6036836dd63ff46a8ed4027258fcf3eb8cf24
16. 0x2bca4aa3c59fe9209016c64bd8b706423477e3407201a00165afde9abf6fee2b
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0