Evidence row 2726672

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://retainful.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/retainful/"
    ]
  ],
  "name": "Retainful MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-03T22:30:56.50145Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T22:30:56.50145Z",
        "updatedAt": "2026-11-03T22:30:56.50145Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "List contacts and lists; create contacts, add them to lists and record events in Retainful.",
      "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/retainful",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://retainful.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/retainful",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "Retainful MCP by usefulapi",
      "version": "1.1.1",
      "websiteUrl": "https://usefulapi.io/retainful/"
    }
  },
  "source": "mcp_registry",
  "summary": "List contacts and lists; create contacts, add them to lists and record events in Retainful."
}

What the leaf hashes

{"body":"67c90069c286ef63428191ab0adca55d9dd5941583a94c7c4690653ffcf900f7","id":2726672,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793747994305821,"prev":2564818,"subject":"mcp_registry:io.usefulapi/retainful","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. 0x9a4e4778b393b36b8f0f99de3b1c5e746416f61872bf377154ef0914ce38adac
2. 0xdb88f10069fbee92efa52b88e33253e31685d2b6ecb07d81732cdae4591f8e03
3. 0xdd50888191bbebe9ae4740e9fc7ae2a452ccf8e26ca3bef6dca4f924b4303c61
4. 0x5a800f2b8f455dc08b1b1b0f4fa26fdd2cfe082d32e86c828458c39d47f4064f
5. 0x9be3afc464b11cbc03f989fe191ff5f15cae92d59c0f8e6d5337de9c7e932e86
6. 0xe356970bcb90d34992ab8365381a926dbdb6d795847fb8ff9fb853dd2e5577bb
7. 0xdb5a4f33170b3f2c6a5ece69cbfb4777032349618012fc2bf957ca394bd72543
8. 0x4d39349ed52723a09d9eb840e16316fe33bde4bd416ed5c8346395970c683fca
9. 0x4c963a39600144a78ed462f64f653139a37cb12b8bbff740d1b71063d249b6f5
10. 0xd12af14057b0600ea4e564aebd62bb8aceaebb46514f6964c162f39dd745c7d7
11. 0x7213abc3b073b11e10ab782304691b87f942a9b7a8039cdf65b5779d776039c5
12. 0xe96c3e9661ba818444523b64b69e1c93799e202d182e14e10495bf7bc6acf0d6
13. 0x047541275fbded65ddbf146d04bc8eb09e9b534f8e8c3e57ae4e8bfffd8bcb21
14. 0x7657cb1e96189305f3276517cf3716f7cacdef06e4b876b60d2c0bd8b60fda96
15. 0xbdd3407977f70b26d0af6e874d984fe982a78bf95057b70049009db10e525ebc
16. 0x77587d79b39ec04901214373cabf0c9651bc2cf065dc080615a260064314c4a5
17. 0x271a5f715272513f57457682f93389885577f2664b5ae5dcea924ad10a098eb5
18. 0x717b5d7cbc24826c5b1f7b7433bf30b76e9ba1370476af4e1b494a5211897cc3
19. 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7