Evidence row 1537557

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/data-europa/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/data-europa"
    ]
  ],
  "name": "Data Europa",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T20:55:11.449552Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T20:55:11.449552Z",
        "updatedAt": "2026-10-31T20:55:11.449552Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "data.europa.eu MCP — EU open-data hub.",
      "name": "io.github.pipeworx-io/data-europa",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Optional Pipeworx API key. Without it calls are anonymous and capped daily; a free key raises the cap.",
              "isSecret": true,
              "name": "PIPEWORX_API_KEY"
            }
          ],
          "identifier": "@pipeworx/mcp-data-europa",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/data-europa/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-data-europa"
      },
      "title": "Data Europa",
      "version": "0.2.1",
      "websiteUrl": "https://pipeworx.io/packs/data-europa"
    }
  },
  "source": "mcp_registry",
  "summary": "data.europa.eu MCP — EU open-data hub."
}

What the leaf hashes

{"body":"26d126882a2f015ab1f94e1bbe373b3a33b149a154db33d1f8aae3357f6a61a5","id":1537557,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793481415199986,"prev":1000973,"subject":"mcp_registry:io.github.pipeworx-io/data-europa","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xda6cf884ab3d7b84d06258b796a4414ea42ec4468073e8ae7c25630b1d75f2fa
2. 0x0a316b38fc88f0d9e331f77096a01f8d1ec1b2ba2d43c4a35da574458bf368b7
3. 0xd6846736051381df5c7b86913e21c53dda9aafccfed25451e831529bce089681
4. 0xd7fecb01b980ed4d4cadb668da0a1c01c4f0f83eede20a782c5fd5bb043fe1bf
5. 0x8bfec7d647674200eae48b021d087bfcccd82c199bc5660ee915b0e7c344113f
6. 0x33f2600bfa0ab2143122fd9d3a39f0d2ca774e4b4b8fa1895e3326bb0fe94a31
7. 0x58104970ea7b2230b6a54c07055b0d2e21f5073440458b84bf87c7c0038cde13
8. 0x2b949f8b373e48ea210536047a729503896e89c436aa87294f6279df5cfd84dd
9. 0x2b61a40db318e893670eb4f48a4838aff41a12c53e1a7446c9ca7c7da1e73cf8
10. 0x6a3c1a819cbcd30703723249fad73788333de478447d29baee99dc7a7c018019
11. 0x1b6bc9ab50690a64d6b4ff6944cb0ef973e19813671a631f7221a979fc869916
12. 0x0c06adadf19f919a9d5dc3e0de4a333ea84b77c73233c4564014b6745a7cb638
13. 0x38ff5931db651d605476dd5d3ea00904e0ec5807919810f7803011a660e48abe
14. 0x33d6b05cf42539c0ad2d9f9d3b99e4003beca3e59b45affa3d20cf6d400d4bbf
15. 0xad3f03d7f9e1b66264ddfca29446faf13bc0fee7d8eec5f018d0d45302d3f8fd
16. 0x24f03354dcb3a621317889ed99048bdf74b380516ca991bfb585c751d5cc7dfd
17. 0xa1146af524f673843507e7427a575964580eef01bc0e0eae466a7920df017ab2
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0