Evidence row 44543

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.live.nevermined.app/mcp"
    ],
    [
      "web",
      "https://nevermined.ai/docs/products/catalog/mcp"
    ]
  ],
  "name": "Nevermined Catalog",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-21T17:06:50.522912Z",
        "status": "active",
        "statusChangedAt": "2026-10-21T17:06:50.522912Z",
        "updatedAt": "2026-10-21T17:06:50.522912Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "_meta": {
        "io.modelcontextprotocol.registry/publisher-provided": {
          "documentation": "https://nevermined.ai/docs/products/catalog/mcp",
          "keywords": [
            "catalog",
            "commerce",
            "payments",
            "x402",
            "mpp"
          ],
          "publisher": "Nevermined"
        }
      },
      "description": "Discover and pay for services from the Nevermined Catalog using a spend-capped budget.",
      "icons": [
        {
          "mimeType": "image/png",
          "src": "https://nevermined.app/favicon.png"
        }
      ],
      "name": "io.github.nevermined-io/catalog",
      "remotes": [
        {
          "headers": [
            {
              "description": "Optional Nevermined API key in the form 'Bearer <key>'. OAuth-capable clients can omit it.",
              "format": "string",
              "isSecret": true,
              "name": "Authorization",
              "placeholder": "Bearer live:..."
            }
          ],
          "type": "streamable-http",
          "url": "https://mcp.live.nevermined.app/mcp"
        }
      ],
      "repository": {
        "id": "946485192",
        "source": "github",
        "subfolder": "apps/mcp",
        "url": "https://github.com/nevermined-io/nvm-monorepo"
      },
      "title": "Nevermined Catalog",
      "version": "1.79.0",
      "websiteUrl": "https://nevermined.ai/docs/products/catalog/mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "Discover and pay for services from the Nevermined Catalog using a spend-capped budget."
}

What the leaf hashes

{"body":"c333b96687a14d989c780374614f40471deac6cde6551dd99ca6e98db1ab8c8e","id":44543,"kind":"listing","method":"baseline/1","observed_us":1793025404889920,"prev":null,"subject":"mcp_registry:io.github.nevermined-io/catalog","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x072bb533051dcae42676cfe5b82b62406c1ca2419b27d27ea08ebda473656f16
2. 0xbde839f5115253f5f1ecdaf0d618bb7d34437546aaa41c9d8dfbf99eaa5d1282
3. 0x1a027c1c9abf80fd1a2481568871aabe0d8b3ce5a0d1950bc8be84519a8704c8
4. 0x8ca3d87a946f34d248d18e794eeb3ee6337d9c667217502df30b3d8a498f7bf2
5. 0x6e20c76ad2f14011f015dc0b5a91b99e714ceaac4a14298d61306853c609e4f2
6. 0x8dcf5380295c9427fe24f671a3d3d13abc1dd1cf943ab0aec7e5b3a28d3416b1
7. 0x84133bd0b5300881a5e72ce86fd83617fc13e9be1749f267d28350caec7c85e5
8. 0x2368a19e0c0dfac25253628f958854f15afc6c56259475eddfeb2f42560e8bf5
9. 0xe58a7bfbcf7ee0d09cdd1c9633a76e0cb7f5d22098bb0135fe0fd6c148c481b4
10. 0x9a948adeab9018ec5a898e396ee4bd686403fcc757d5eaa65da65f42603cb55c
11. 0xdd6d5f87470c9b64b375ecc2fb3ff4a65fedf3d6a0bd40f365da40a6a41b103d
12. 0x7910a200eb458bec3c3badb3b2ead3e75cec5f3ba263800cea6b9f32efb53f25
13. 0x610fdf3e989af0a6b4a400a3a8aab9156d757f8c96efe4e9d0594dfd04de1cc0
14. 0xd1d3499072edb10edc68f84bcae2365d2ab534df689250cab18c751b6f13b6ff
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae