Evidence row 35453

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://browser-compat.caseyjhand.com/mcp"
    ]
  ],
  "name": "io.github.cyanheads/browser-compat-mcp-server",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-15T21:41:33.69738Z",
        "status": "active",
        "statusChangedAt": "2026-10-15T21:41:33.69738Z",
        "updatedAt": "2026-10-15T21:41:33.69738Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Browser compatibility and Baseline status for any web feature — offline, from bundled MDN data.",
      "name": "io.github.cyanheads/browser-compat-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"
            }
          ],
          "identifier": "@cyanheads/browser-compat-mcp-server",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        },
        {
          "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"
            }
          ],
          "identifier": "@cyanheads/browser-compat-mcp-server",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "streamable-http",
            "url": "http://localhost:3010/mcp"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://browser-compat.caseyjhand.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/cyanheads/browser-compat-mcp-server.git"
      },
      "version": "0.2.1"
    }
  },
  "source": "mcp_registry",
  "summary": "Browser compatibility and Baseline status for any web feature — offline, from bundled MDN data."
}

What the leaf hashes

{"body":"f7458e334529d9c4144da9aec7c153b84941c8b10c36e0948db5e4699f107e1d","id":35453,"kind":"listing","method":"baseline/1","observed_us":1793025373053291,"prev":null,"subject":"mcp_registry:io.github.cyanheads/browser-compat-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. 0x583ddbe1b42ce7c6391c29cb9cf924ad8634d3ba4f4389b24fe6c50142994936
2. 0x2c8ba5f05cbf8eb7c2945cc06871ccaff20c387303dd94dea1ea5aecca5677f4
3. 0x5afa240ad413c06ffa2bf402e53bee379c89759665ca7146d33719158252beda
4. 0x81c981cb01247d8deefe359152f16de25762874ec7ab808d18537b5a1280a88e
5. 0x3acf475aca2eacc4baaf4ea3cc8a01da92a29da7ae3712391124715063a8f411
6. 0x26e00a63943ddda7f761d2b18b21f0f82cc842c29a28909457df6b0c1d29ed3d
7. 0x12d307319fa7a8bfcd1cbfe3e59b851e96b4910f5f9690ff50cb3f521a59a1c3
8. 0x96bb9ca724aa420578ebb1c48b7544b016bc44d7d61700fc48ec39aa48934b3b
9. 0x269b9096d0604ea79f487040804f7794785a2c21c4b2755a2a58fd0bab2d5376
10. 0x7ae162dcc3142c20e9800f624edcd459f9a47b7db25601e5e24164992c46399a
11. 0x86f49d35fee840c62060e3a6cbc75237dbfdc70dd7439506d3f085c9cca8e4f2
12. 0x01ecb94c2efbfb8e9050ebbd813fbba80bbcbc345f98de707345bc4bc88c94e8
13. 0x8ba3430866b4c11cea7eba9923ee4fa8a5074849df417006e4441426c1f13056
14. 0x5cdeb4648502e0633d01cc4f3379d48cccb9d4f528565b2868eb93db0df9e829
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae