Evidence row 2546201

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://acube.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/acube/"
    ]
  ],
  "name": "A-Cube MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-03T07:15:48.889936Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T07:15:48.889936Z",
        "updatedAt": "2026-11-03T07:15:48.889936Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read Italian invoices, receipts and SDI notices; validate, prepare and submit agreed drafts.",
      "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/acube",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://acube.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/acube",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "A-Cube MCP by usefulapi",
      "version": "1.6.1",
      "websiteUrl": "https://usefulapi.io/acube/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read Italian invoices, receipts and SDI notices; validate, prepare and submit agreed drafts."
}

What the leaf hashes

{"body":"b950f66a6545efbfdb29227d596be28c5101b5b7e8d7cbc9bc1b82a660b7b367","id":2546201,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793690343016807,"prev":2129976,"subject":"mcp_registry:io.usefulapi/acube","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. 0xa91e7e08f80d86f58756bc8d59c5f95e0725cdefb1e2285b6a2cf799869c2f2d
2. 0x2a0ee32ac38408cea9687504f42136b90d39c66a9da9b3f10277f309c8d77dc5
3. 0x4862134008ec0b94360e2aed8fa6c19d6a92868eb4d22abd09e4ce133465adfa
4. 0x26521156dab7479848d8ef0876e541c89432f4821492e6909dd384370c90d6f0
5. 0x069717ba309bd8d4c8d613fc5c50728c40b3ef9c75659d64e960a99649e2d858
6. 0x101d63e83154ced0cd36274cb6f3dbe170c888783b2310ac0dd2b0724157b8a8
7. 0x9f9e840c8fae4fb80b14860b8fc54e689e94d7914c4e187bd0bb8bf9a0e7a72e
8. 0xf094c941edebec00ed4a80cf60ee1ec50add92ead0a8d8e99eda470dd2ec62bd
9. 0x65e7e06674a795404c56c50ca452bdeb9e597ce922fab468077ca2329096c2a9
10. 0x3695645ad987f962a9a7f9dfcf030d92ad579eda0550ece15abb75e195264c5e
11. 0xbd4eb34f821c3bdaef5a148f4de34016e65c46becfa08ef61ffbacb3393bd216
12. 0x68ba01882f8cd5f05331ba4c13ed1736bd385302dfe369562d8c8dffb411db04
13. 0x072b3d17bb7341e0a6f5545d34c6714e6464c4add696fb4eda76427e86b03107
14. 0x0ca6f7cbe9f26e47db97b53988aa24d0ac07d16b5a4d91abf869814d4d297de9
15. 0xa538822e863ef8366c4eb66bf75faf8a639aa1f066f65f7444fa54d54d48ec53
16. 0xdbc1c0882584cff2eba84dcd18af41b5fd070127c962a21b00db1ec3e352cc94
17. 0x39dab39081985bbfffe23b080399a9d1a9cb9c2c8960102350c4212113cb2cba
18. 0xac5402954216dc6c7020a6405675c8fc3b0828c2ab02943d80de52677a2f1fc3
19. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7