Evidence row 439612

What was observed

{
  "endpoints": [
    [
      "web",
      "https://psinglap.github.io/websearch-api-eval/"
    ],
    [
      "mcp",
      "https://websearch-api-eval.psberkeleymba.workers.dev/mcp"
    ]
  ],
  "name": "Web Search API Eval",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-27T07:51:39.385671Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T07:51:39.385671Z",
        "updatedAt": "2026-10-27T07:51:39.385671Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Web search API benchmark for AI agents: You.com, Tavily, Exa, Parallel. Results and charts.",
      "name": "io.github.psinglap/websearch-api-eval",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Optional. You.com API key, used only by run_live_search",
              "isSecret": true,
              "name": "YDC_API_KEY"
            },
            {
              "description": "Optional. Tavily API key, used only by run_live_search",
              "isSecret": true,
              "name": "TAVILY_API_KEY"
            },
            {
              "description": "Optional. Exa API key, used only by run_live_search",
              "isSecret": true,
              "name": "EXA_API_KEY"
            },
            {
              "description": "Optional. Parallel API key, used only by run_live_search",
              "isSecret": true,
              "name": "PARALLEL_API_KEY"
            }
          ],
          "identifier": "websearch-api-eval-mcp",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "1.1.0"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://websearch-api-eval.psberkeleymba.workers.dev/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "mcp",
        "url": "https://github.com/psinglap/websearch-api-eval"
      },
      "title": "Web Search API Eval",
      "version": "1.1.0",
      "websiteUrl": "https://psinglap.github.io/websearch-api-eval/"
    }
  },
  "source": "mcp_registry",
  "summary": "Web search API benchmark for AI agents: You.com, Tavily, Exa, Parallel. Results and charts."
}

What the leaf hashes

{"body":"db967db87acb442c674a464f2b5a71a11020f35fc99c850444a60c867445f815","id":439612,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793089654956271,"prev":396087,"subject":"mcp_registry:io.github.psinglap/websearch-api-eval","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x95907ef1517b82ed01240cd88d0db6d36f37ecf0c40ab815b509f1676451a1c7
2. 0xbb0de74601e736172ab29c47c56938136408ced35305f4881180df360b4c0638
3. 0x61886792849dba7b0808a5717eab687737461109f03b6b01959fe4dea6aa3bfd
4. 0x2372994a622b4d89a3a825252d74dbc6ec21a32556b070166132b6a39568e8e8
5. 0x8400e747254b302b4549bd56c778cb4062e05422e1e2e4a62bfa0e390ec6a9bb
6. 0x091038962fce60c9b8f419fad54bbe0245cc9d23ac40bcdfc3f0f8c666f339e5
7. 0xa556d638ea8fa4472fe0c5eb69f5cedc3d5657c7a30097c0523c99b47fc6b27e
8. 0xc4eda18786d974606cce2cbf6c1813f9d739407d8eee08f6a4f17f8b4a0ea890
9. 0xf7beed7e1548d9a483574650c9e5f3a4f0d415d114b147898ca3ae2426625d7c
10. 0x6f2bfc0aab2f9e0223a64b796c1f862e21a76c0f9888b77eee18828dd9bc9878
11. 0x788aba917f07b58dad1b1840a291541326bd98232b25a97c4a60c84fb2992815
12. 0x747fb8d60cfe8dde3cb6d73475c58c3912bdf8d928b8f0480aa1c97a1b71d408
13. 0x59c5c792b40d9054ce2b84a60af97fa54f2e1a2a369a6a52dc3f45de41128e97
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4