Evidence row 3958492

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": "2026-11-07T18:05:26.273723Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T18:05:26.273723Z",
        "updatedAt": "2026-11-07T18:05:26.273723Z"
      }
    },
    "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": "1.3.4",
      "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":"18c4b7971a93a2034001cb9e8e3e57f3740efec3feb4c5e254df3400effed0cd","id":3958492,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794075912513507,"prev":3945654,"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 2026-11-07 (195826 rows).

1. 0x7c1e85fa59724bacc5190f57fba9d1dd6569681a219fb4bb3d1c852ef21a8fdc
2. 0x9f8ecff619059738d486d38230eb61727185d2f3a22f37c71fd04767ac0f6ac8
3. 0xc61508c3dd17dcbb80cb2af1be54c63a98115a8d58e4580f1773dd18203976ce
4. 0x8e53ff30e2c096e02d59ec691f31ec1b048770d73bb04087f10511f5f30bc032
5. 0xbe6279acb9a08f2b949bbfee878f582f5510441f37707d9c1ba386326f927f68
6. 0xbd75f95705f6f4e7eec5ce701a5ebbea6b0d79cbe8c07ecf546ab63daab2ea06
7. 0xaf4b99c39598e6eccfefe22415317413261cc9772b06f548fc7714a0ea55b985
8. 0x02523df3b0e67d0576146e11de50e6c227428e6da4bae5721ad13f3c79d2faca
9. 0x3d9b780b30c3b9b201ca8783d2644bc9261567530b2798e88ba25d8e15a1b11c
10. 0x7518ea42071a0dc7aa0bef871ff329891fecd907330f2c0c282b9335bc36fa42
11. 0x9492bc29c014a0cc4db12f590be32a19c639bde31f0bb4d99aa33c88646bdc50
12. 0x5c65af7f5af10206168fa6d142ed80310c50c91050e9f686f8e0d302493f5b74
13. 0xdb8937d5e94ce631726ca4d5174d465ef8d90afa09be74c6c17febce89e84dad
14. 0xc9930015910e15b4a3ee7fa6677b93ccee48576a50ff5a3514be8ce187946e8f
15. 0xdda41bf8f8b807884588170276b0203d24918e4a5c47ba7f4d5d0217f85e0cf7
16. 0x9108c80d13a11b7549b554924410a7c5d215a2cd03aee9659ca627cb099f1a2e
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa