Evidence row 1537631

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/datecalc/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/datecalc"
    ]
  ],
  "name": "Datecalc",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T21:09:00.172456Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T21:09:00.172456Z",
        "updatedAt": "2026-10-31T21:09:00.172456Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Date calculator MCP.",
      "name": "io.github.pipeworx-io/datecalc",
      "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-datecalc",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/datecalc/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-datecalc"
      },
      "title": "Datecalc",
      "version": "0.2.1",
      "websiteUrl": "https://pipeworx.io/packs/datecalc"
    }
  },
  "source": "mcp_registry",
  "summary": "Date calculator MCP."
}

What the leaf hashes

{"body":"1ba843301dd4a2ce1f07cb54fa19adfd2f6deccc601b89826a9660cfad5fcd1a","id":1537631,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793481415980537,"prev":989622,"subject":"mcp_registry:io.github.pipeworx-io/datecalc","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. 0x0ef87410d0cef4a5774a6329a7cfc6bcd689ff34f9c9b88ce4ab64b7bdcf46af
2. 0xed09d422690574620db509638afee7f3b32951bd8d27149bba0eba73fa1fad48
3. 0xaa11b1449b860ae2320a95ce248a1cc5fb6614d780d9e093630e7feb1df36b67
4. 0xfd9680bdfaf02f2e636169511c297d75720183b855692ba48c1fb22bccf385b9
5. 0x8ec95868f6d11aea0bc292d886ccbd6bcb874986b797e06d6f431f8b8901ca0d
6. 0xdfaa367e7cfe572b36c6a5f7663b3c574a77f780d3c80a5c3bcc731802575989
7. 0x5d8cc2b31f41abed85650bd98995c23411cf42ccb8e05fbedf1a7c961423ffff
8. 0x1a517a4d1fd76d724fcf086655e8b6ad1f1fb7310c6a376eb49a18d82034bf3c
9. 0x986e6a21616784f290049e3ee699283855914067b1cf77a71a51cd9358d292eb
10. 0x8d25520adca4d41d3c1965f220fbbd258670ca0043593d94e1f26ae7d1003ea5
11. 0xa21c961f23229786e92be71f698ff2cde4e154bb44d8ce532a0819887f2dd812
12. 0xa115d2aa4bb5cf8cb7b5b8814b35ba5ccc89943ee285b442443e4a06f973efa5
13. 0xcb2cb28a33039aae566babd0a0b4f4ee907393fb561a2e3c876f0270ee9a2350
14. 0x5f01ce2f7be13617b127cba8dfc54bc12d54dc74dbe1632c8104af22668fd4f3
15. 0x72fbe549c493739bb99e38209648de550f136f904e61b4f7609a937c2630a055
16. 0x2bca4aa3c59fe9209016c64bd8b706423477e3407201a00165afde9abf6fee2b
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0