Evidence row 3944994

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": "2026-11-07T09:18:01.594325Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T09:18:01.594325Z",
        "updatedAt": "2026-11-07T09:18:01.594325Z"
      }
    },
    "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": "1.8.3",
      "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":"1f93e9549dbef21a38152c7fc96421003baf1cbfd505af324bd3809175620de5","id":3944994,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794043454030836,"prev":3775013,"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 2026-11-07 (195826 rows).

1. 0x5b00f183e49bbfcab7caad015555376fee862575650d987a72f4f29c17687e83
2. 0xecdf30b58413fd43f37222de2318edbcc83bffeb6796a87da8f5f0a3a7b8fc55
3. 0xafe1a191ccccbbae6864f0223c0701a3219b7467e642154362a42c19ffe5bfb8
4. 0x524012770d8aa8ac002179b0e81aa61f02b3ddd2d41840302be82ee2cad724ec
5. 0x7424c5f468f664d6cdf6da8dacd6eb3253fd3a0cd4e81befe26b30a7e964663e
6. 0x97f6ca025a9902abb3fed6fe9ce22b7777a4d9cb0b2de75ef805d45a73efc52b
7. 0x8e72f8deb940b6859d8b2e44a0efd33c036caa8ccc53c9c381ebc91426fde6d0
8. 0x477c9571f4b370df523acc9559879eb8d964bd075cb05253153c83248b9f9594
9. 0x37ead41d67d45240d24552d51d0bc4b199a99f7e3732e77616634f6e6c75f6fc
10. 0x79af205fa5e2398baec5fa1e4c145f0fbe5159824f501a8a20959011eed55f62
11. 0x41affd84efb27fe70c6884e08adc1ae7b2f934e6e1b82f493bfb732a7a2dc9ea
12. 0xc993339f8da646bed2fb3665c7056505de1e2b657f02d07dc7418ad49e7357eb
13. 0x610cfeaa2eca7ae44f051846531f815573ef1030804869a7ed428105b6b78f81
14. 0x712cc609388442c0171a13fe8c2149c1d02ab5643adc1ab035eb3abf53adbae9
15. 0x9127f3a0ab829dab5d80217ddc8d077053e20f2e260baed043c8a97478ebb2bf
16. 0x9108c80d13a11b7549b554924410a7c5d215a2cd03aee9659ca627cb099f1a2e
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa