Evidence row 3944901

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": "2026-11-07T09:17:59.150392Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T09:17:59.150392Z",
        "updatedAt": "2026-11-07T09:17:59.150392Z"
      }
    },
    "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": "1.8.3",
      "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":"25c5cc96fef10ccca630bd380dfced22029943f482f44c034735e49383696338","id":3944901,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794043453257175,"prev":3774919,"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 2026-11-07 (195826 rows).

1. 0x890380be8fbff34ebad5a8639342f7bab8e96be6e4fb142afcc81b52f95bc5d5
2. 0xddf2326357ebcfb8af195012df3529f350a250a36195d7672fd2cbce167a956a
3. 0x3ce4744d715bd7c94b3f7098854d21748ac934afbf98ea1c09e2f1ca97888b3a
4. 0xd4f820772c6c0ce59dc18848ee31ae0f9251c54b74109bd22dc916759367e808
5. 0x5d30b23519a0823d37ff8181311a43354eb08fb3f55c0a88fef8787838d9a7ab
6. 0x271fabbce65244e481cb834ff03ae1f051d0239d883928c413c4ab2f3a72fa1d
7. 0x05af7c2efa5584209129e8fee0c02a7b317600092537302c3e79aa9f25186238
8. 0x93dedd62235b56069fd4b98b344917c8653298ec59bb1d1e1d9c05f00125f168
9. 0xdd5fff55c1d7daf41781b97dae62e9109b571aa193a6b173146f7db56a92ba76
10. 0xe7c395726676d31532f8dc535ee10cbb763d0763b7d70622f0a5b85f46e11fb6
11. 0x361638af2fd0ccf907db054262ed36e259f0545698dedfae6f2e94e24e8f43e5
12. 0x6029236289c3f232d8a52c70313dc9592ee92ad910140c5200de2b733046a006
13. 0xec49601319806ac4fb8864fe5b58c4d0e2904402b01d96fee8f1e2e36118c30f
14. 0x12c0a392774b845f910669768178b834bb75c37650d35b673c7a7e05ebd31c5b
15. 0xd41994358bb34b15f062df47abfbb736ac4887eb6ef21ce32a5d581e6ae47e6e
16. 0x39ddab61a3a1eeffcb2f54acf6ff87eaec375674f3e77f00c342826d4e1bf071
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa