Evidence row 277793

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": "2026-10-26T18:12:45.07271Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T18:12:45.07271Z",
        "updatedAt": "2026-10-26T18:12:45.07271Z"
      }
    },
    "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": "0.3.0"
        },
        {
          "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"
            }
          ],
          "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": "0.3.0"
        }
      ],
      "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": "0.3.0"
    }
  },
  "source": "mcp_registry",
  "summary": "Browser compatibility and Baseline status for any web feature — offline, from bundled MDN data."
}

What the leaf hashes

{"body":"a5719cc6b5d63eeef278a1b3b61a289c441765235c62474a1e6676889350c630","id":277793,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793042042356469,"prev":35453,"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. 0x72e2639aff864c3116bc3d2ab85800e329d8212f14b9a447ef253e70622f3eb5
2. 0xb46bd60df7c7bd6e676632d368cdde082d43919b3f621842f320c4130862e6fe
3. 0x568a777b050a1958d4d6ae317b2fa317c8473be83c7721e93e0dfd0aa8727406
4. 0x1a7ed03b7826ec8647e3db8c6d5e4a186c97b926bfacbbf2042560332ea2d98f
5. 0xc52aeff8db1ed00327e5b16036a36ff7412621527eede788d0043b0488b92ba4
6. 0xfc4ec3df07240cfbd63c8bb72959d89b4cc9177fac4b5029d319c920a8f4a2c2
7. 0x7734ca1782ffe6f3e51dd761f6aaaea5adc63c0a5a44dc7640ffc76ef0c645fd
8. 0x1a1b06347a650fa523f8390a69367f1596615582dfdd8aa95479f8eca291b37f
9. 0x7459f654e3deb4daa7554739b67f789eb49794526fe128ad87d04e63bc2da617
10. 0xfec618220a4577d4063b5b2d1736f3db0d758d4b39800128bc55fe3318ff8373
11. 0x9763a000e2506d3e18d36911968fe32044769ec0822949b880df4736389d3536
12. 0xef1802ec08c5a2efaca6aadccc58edcebeb620a019383dc0785f198c677a9427
13. 0x06064dc1eb2363bec8c2a752e0a28aafc4bf0cb21d1b1b755821c1575bb77a96
14. 0xc4fe2177880ea1b0e82b6fe4c270090fd0fbe5af3a42a8cbf6a6ba2fa35625f6
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae