Evidence row 3723989

What was observed

{
  "endpoints": [
    [
      "web",
      "https://usefulapi.io/youtube-data/"
    ],
    [
      "mcp",
      "https://youtube-data.usefulapi.io/mcp"
    ]
  ],
  "name": "YouTube Data MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-06T12:09:59.007582Z",
        "status": "active",
        "statusChangedAt": "2026-11-06T12:09:59.007582Z",
        "updatedAt": "2026-11-06T12:09:59.007582Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Search videos; read channels, playlists, comments and popular videos in YouTube.",
      "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/youtube-data",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://youtube-data.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/youtube-data",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "YouTube Data MCP by usefulapi",
      "version": "1.2.4",
      "websiteUrl": "https://usefulapi.io/youtube-data/"
    }
  },
  "source": "mcp_registry",
  "summary": "Search videos; read channels, playlists, comments and popular videos in YouTube."
}

What the leaf hashes

{"body":"aacf00331c1fd8605d8599940733fcfa1006269bf6d904ea739a1233c072d5bc","id":3723989,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793967742896361,"prev":3414705,"subject":"mcp_registry:io.usefulapi/youtube-data","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. 0x7dd0aa220faf65c4e076c454581d03ce7c644cdac77ff98f04d741ebea49bb23
2. 0xe0e424530c880c5a0af7a4340740ec6f983715960e4afd1f3214abe01cd6ef4c
3. 0xcec3a511155a8f0f397d3a5199b2fa758e5392345f64a9b662c0c34596acc99d
4. 0x39ffee014621c463ceef384d25f1e8707fa85f00aea53f48cafe6d94140676b5
5. 0xa4246cf5bd1b9612130e60e5112d858a4081ec71bd3ec07b34afb856d2866f87
6. 0x28409b43cda3714385a2852380527ed1c1f376a877426de3bebf364b80036d6b
7. 0x3507201b1c79badf936363ccd9f31496abbc00b64c43189a3f56a09f695a66de
8. 0xd8089e773d9197eb568d85e21de46c95cda3b9dee4ef3993a88b630e228aaffb
9. 0xe0bccb0fc2e207d7bd8738f2585156c4cac88764a48e3780ba9e348eb17ecce2
10. 0x53b999490375c61083f8f1bd27b08ab6846da556e133a7c848a148b6f2b662ae
11. 0xea86c462cf19078cf8ce1dc0bd6fe8f61b8a015d167eeb78b6ed49caf3ae7945
12. 0x811b914592925c2ff347714ee926e75e42118849af6c05e29ca20b8ad52d6c7b
13. 0x89e86fdab677858fce587b6892b9ffc4fbf139424c0e40d61dae57526f7eb1f9
14. 0x6aa61e674b3c29ca9cbf3bb85eb5c666ed7c7ae477218e53a6b5bd9b7314a653
15. 0x4aa18de7ba70c1384dfa5e9fde2ce72817bb169f51aa0c98d197468e304aabd5
16. 0xa020619e8f130eeb03f3c2beaba0422017bd8b95688ddf44db1c31cf0fd40a6a
17. 0xe98c6c6b56a21a2fc4c1edfe2563812e690a6a4336d11aef772ac1799d1ee7ca
18. 0xd422a75f6c3780ed53eca52b50bf40b8f17dc14cffb804142e44fc9f2672029d
19. 0xc0d08d48601d1be90bcfc025e66bcaa0030120d688dd9c919b36c2c4446f4948

Day root

0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f

Chained

0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3

Published

On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1