Evidence row 35471

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://datacite.caseyjhand.com/mcp"
    ]
  ],
  "name": "io.github.cyanheads/datacite-mcp-server",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-18T22:18:24.250117Z",
        "status": "active",
        "statusChangedAt": "2026-10-18T22:18:24.250117Z",
        "updatedAt": "2026-10-18T22:18:24.250117Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Search DataCite datasets and software, fetch DOI metadata, trace relations, format citations.",
      "name": "io.github.cyanheads/datacite-mcp-server",
      "packages": [
        {
          "environmentVariables": [
            {
              "default": "info",
              "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').",
              "format": "string",
              "name": "MCP_LOG_LEVEL"
            },
            {
              "description": "Contact email sent in the User-Agent as mailto: (never a URL parameter). Moves requests to DataCite's identified tier (1,000 per 5 minutes per IP instead of 500).",
              "format": "string",
              "name": "DATACITE_CONTACT_EMAIL"
            },
            {
              "description": "Request budget per 5-minute window, 50-1000. Default 800 with a contact email, 400 without; divide it across replicas sharing one egress IP.",
              "format": "number",
              "name": "DATACITE_MAX_REQUESTS_PER_5MIN"
            }
          ],
          "identifier": "@cyanheads/datacite-mcp-server",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.1.3"
        },
        {
          "environmentVariables": [
            {
              "description": "Selects the HTTP transport.",
              "format": "string",
              "name": "MCP_TRANSPORT_TYPE",
              "value": "http"
            },
            {
              "default": "127.0.0.1",
              "description": "The hostname for the HTTP server.",
              "format": "string",
              "name": "MCP_HTTP_HOST"
            },
            {
              "default": "3010",
              "description": "The port to run the HTTP server on.",
              "format": "string",
              "name": "MCP_HTTP_PORT"
            },
            {
              "default": "/mcp",
              "description": "The endpoint path for the MCP server.",
              "format": "string",
              "name": "MCP_HTTP_ENDPOINT_PATH"
            },
            {
              "default": "none",
              "description": "Authentication mode to use: 'none', 'jwt', or 'oauth'.",
              "format": "string",
              "name": "MCP_AUTH_MODE"
            },
            {
              "default": "info",
              "description": "Sets the minimum log level for output (e.g., 'debug', 'info', 'warn').",
              "format": "string",
              "name": "MCP_LOG_LEVEL"
            },
            {
              "description": "Contact email sent in the User-Agent as mailto: (never a URL parameter). Moves requests to DataCite's identified tier (1,000 per 5 minutes per IP instead of 500). Set it on any hosted deployment.",
              "format": "string",
              "name": "DATACITE_CONTACT_EMAIL"
            },
            {
              "description": "Request budget per 5-minute window, 50-1000. Default 800 with a contact email, 400 without; divide it across replicas sharing one egress IP.",
              "format": "number",
              "name": "DATACITE_MAX_REQUESTS_PER_5MIN"
            }
          ],
          "identifier": "@cyanheads/datacite-mcp-server",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "streamable-http",
            "url": "http://localhost:3010/mcp"
          },
          "version": "0.1.3"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://datacite.caseyjhand.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/cyanheads/datacite-mcp-server"
      },
      "version": "0.1.3"
    }
  },
  "source": "mcp_registry",
  "summary": "Search DataCite datasets and software, fetch DOI metadata, trace relations, format citations."
}

What the leaf hashes

{"body":"330fba5821cd75f9c827150cfd2edff52faa6e79ed2cdc6b4584222c8fcc1c56","id":35471,"kind":"listing","method":"baseline/1","observed_us":1793025373083833,"prev":null,"subject":"mcp_registry:io.github.cyanheads/datacite-mcp-server","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. 0x3eaa7c9177172dfa63f336353a730e560d0952563c148a2bb02df0c012a610a8
2. 0xd7c4510bb0191a9d0493fb7cc2415073296590f1a93e8718687098083829b5ad
3. 0xf560ae3647a68c3e7ecec2b849d7f6bdcc111ea3d758d04809fbbaa1b150be2b
4. 0xba71d7b7177f8dd15da032cccccb5c8b19d028384565faebe20028397111101c
5. 0x17f5555cd2a12a8c377b6e4e8df68f925533e89d03f8b5e9718555ce7bfee7d6
6. 0xce3b33402bb223d3feb3aaf2419f5e9e4bcb11178882e4190b543da6604394de
7. 0xe0fa47d8fc80fc9ca42cf1aaacb3435205b5f1354cda09d14e8e9a91e4585535
8. 0x34effaa8f85ed3c50fc2a923f57f766ac263b4a1e37e17691941a04348bc4e66
9. 0x278b57004432e1248c5169a8df1b1834df696ee7256b842515a2b0c2f6f3ecad
10. 0x870d07b9eca299ca4a4138d50bec59a15e7e0971fcb5751398118bfa5b9f74e6
11. 0xeff3ae4ccee9e9ab663bed39de24a2076950808876228a89701d6ab7f016bd7e
12. 0x1afc0318a98c6dbb5a80e5cb86eba22b844e3f3b185a16f17290e29ab7410f55
13. 0x215f432600b78f2e7c9629cd10ce6ce4b7f3351b0b71f3f2c7dcb8e650f6cd63
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae