Evidence row 3775453

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": "2026-11-06T20:28:10.590342Z",
        "status": "active",
        "statusChangedAt": "2026-11-06T20:28:10.590342Z",
        "updatedAt": "2026-11-06T20:28:10.590342Z"
      }
    },
    "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": "1.2.2",
      "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":"985923a52130ae6527bedf093f624dd1c2609c72c010f0a9d88c725ff3609de8","id":3775453,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794000218555977,"prev":3765149,"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 2026-11-06 (303443 rows).

1. 0x3ed5180bb997e32f86bb7a56eac5e24428eedf1b7b049cd566035ac588c16f2a
2. 0x3eb43d998829af2808cc336d909d6f745a900a93c38f3bea3f9b5969d4795251
3. 0x75806e22b0a79a336f5957e8174ea40eb86e9c66a9c285b071eba2a4143ba8d5
4. 0x1ca98ba788f82be9e55dd0fd7d7b2169315ef4bf3666ac6550c2841dfc622c0b
5. 0x715c62b26806966730c0615787ca6b357a07591844bcd36fe07c2f606909e622
6. 0xce531d43c72d16c67adac6ad429dca656010471924b85998e2d81792238976e7
7. 0xfbe0ca63423e58fe6b6a9cc76066d3161bc81b1eb1d9c771cf4472ef7382b724
8. 0x4ca887eec8df076da653d00f3e2600cf4527a86e08e2f90e3658a5b4dbe164ce
9. 0x9c6f5a00403358e0d5343145ef9ed06cc6db583b06e8dde81005669b6b652eca
10. 0xda92d317d4d536a75a3309729494902b47116bf40b8da12e24ae3ea3b5e55f5b
11. 0x442aecbb336a8197b5520de8e292c4fbee64898a0142c16bd3850378b13c927d
12. 0x83c45f4b1c17fed9365b5dea4b351128887d611c98b738a63be5b4fba85f82c6
13. 0xdea67765485b7f8e9cfd696a7b48f8329881cd7cb66c12d7580fdc33ae4e6a67
14. 0xfff93ce218f4539f2d354235d409dc53c9f6102b043c9da7a4a7f0fd9c804d4f
15. 0x3e5703f087c9966ff9f302cea33450db9f9fde7cafb8269b22ded1b2a3da03b0
16. 0xdfedd18f60be5438b67a88cd42d31ead60bf5dbfc8d726e3d83be13474b3bd3f
17. 0x4a618d78b1cebba8beec4ef22aaac9187dcdfb39064e0be537ca2600abb90740
18. 0x119743aadcddb571b28b442b62196d4a0afc4e1c9979c2d477d34fcc9413deaf
19. 0xc0d08d48601d1be90bcfc025e66bcaa0030120d688dd9c919b36c2c4446f4948

Day root

0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f

Chained

0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3

Published

On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1