Evidence row 1828716

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/europepmc/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/europepmc"
    ]
  ],
  "name": "Europepmc",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-01T20:58:02.816225Z",
        "status": "active",
        "statusChangedAt": "2026-11-01T20:58:02.816225Z",
        "updatedAt": "2026-11-01T20:58:02.816225Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Europe PMC MCP — biomedical literature.",
      "name": "io.github.pipeworx-io/europepmc",
      "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-europepmc",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.2"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/europepmc/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-europepmc"
      },
      "title": "Europepmc",
      "version": "0.2.2",
      "websiteUrl": "https://pipeworx.io/packs/europepmc"
    }
  },
  "source": "mcp_registry",
  "summary": "Europe PMC MCP — biomedical literature."
}

What the leaf hashes

{"body":"579cf3d78b3546f6eb4373bcf6ed6541c8d3f47cb30d245a98451878e82cc427","id":1828716,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793567868180579,"prev":1225306,"subject":"mcp_registry:io.github.pipeworx-io/europepmc","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x635367feafdce73ccbda6a14fdb7098d5f861d8d5dbfdd10c3f1da7287e9a771
2. 0x3a74866e6b3a241b36bbb4e66f9db4e076bf0561e1f98b46355a7c55acc00351
3. 0x19d6c6a6ed72582b14211db0ed9877f95eb10097e86933d77136ee0ed14fcf3a
4. 0xb03fe740d4ed2fdd0fa6595e5a14bf1af5e594e0276401204592c22feb7081b9
5. 0x84b0925d32e9ff9b52ec46042b505915a64cb2239333c4c7dcd660fb61037130
6. 0x30aa3a95c4f2e92550987372235db37f2c85a4dd0593ab27f4b983c597ee4a11
7. 0xa7edd48037a141018fa7985afed99ba77fa0e98ec89cd0d3222817b26f6ab000
8. 0x2efe91981e4c23420b5629ae2ab7830a2c9bdd85f87b406b207509c6d17d3fec
9. 0x6030acfe3634e9b38c9e5fd3406c7ffead28a54a7a0e5ea0183a8d1204bcca06
10. 0xc32e5a1883927c5955a5db41713e6a92f1ad474cc84325b02760b9334e1a89c2
11. 0x2fb970942c26a5668d795a2f3c38d9d72b2c547c354f4947337c45be065a5070
12. 0xff9b8f01632947d40738b3e8648f66d25af96563c1bee717d4e6024bf22ae3e3
13. 0x0aa7bcd64ab1520080bf6bd72a75d5f377537629b47f20b8e8d9418871f23602
14. 0xf2a2a0157f28bf3255c9b6847cbe675ba213d3983bbfe1c0848c216c57838e54
15. 0x7c66173839ef153f08dfd346f7ea956e9226e1b7ff05bf4c6cf27436953f336b
16. 0xc1f6e8dd182b37cbb6e04d0e69486bd40d440934f8e373b9bae8cb78de508bba
17. 0x97f6f39e601b6ef0e47b730aa0488b718c0d7882ad840342bbd7d3a705a1b3a2
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90