Evidence row 277795

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": "2026-10-26T18:06:02.674184Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T18:06:02.674184Z",
        "updatedAt": "2026-10-26T18:06:02.674184Z"
      }
    },
    "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": "0.2.0"
        },
        {
          "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": "0.2.0"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://datacite.caseyjhand.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/cyanheads/datacite-mcp-server"
      },
      "version": "0.2.0"
    }
  },
  "source": "mcp_registry",
  "summary": "Search DataCite datasets and software, fetch DOI metadata, trace relations, format citations."
}

What the leaf hashes

{"body":"cd12eea226d5ce54c00022493e0773d24c81f14fe9d9df6a919be20c9a945556","id":277795,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793042042365138,"prev":35471,"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. 0xd66d406fb56800d0c4680df8f4bae02d03e436ab2895cdd91d0da553fd3d7aac
2. 0x4582bfbbd197820122522f3efcfa574224feea0ef8379f8141d6de1410997483
3. 0xa5a8c65d0f688871b174af758ca130c70bcdf06560cbaf67417c75012f1019df
4. 0xe5d98bb84e88a7dfb650e646771d07516109cd8813a5c88c25ff05d870250132
5. 0xe6e8432cffc90e54a5ff99a5059f53056bd361c8656e766b8932594389130320
6. 0x19c55f341b4ce6263d586927a09c0a7e3e787a9af0b59606d91cfcc1bc2a6291
7. 0x2a206886143d739413f82185dcf5fb420646bcc4a96d4f28c73ee7157fd2900e
8. 0x5a80c1af85fc5df438c782ec403b6cfee723f204e3b758e590db09a045cf70d4
9. 0x8f12d8691e59ef968184b3a7da1feae3625ddd58b4094ed7ded8e157fa743809
10. 0xf226be7a40555e1c0639dcbf0c0dae400939299db6fb2a8e4eb2b5866510dc29
11. 0x993ee5fd278bf116928331fbf1ccabe7ebb40d4f5e12235f09eee4dcb29676aa
12. 0x39d84ffb833c94bfff15760ea7da987f5303e407884de386d5a33b2328c7d785
13. 0x3199db04c2c73c3483386a86bf503eafde5af103465608156e2e5f42e72a6fbe
14. 0x6b927d53caa5125cdba9255612d524976c691f8672796c3f0885ba2c5b3af1ad
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae