Evidence row 49542

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/contrast-ok/mcp"
    ]
  ],
  "name": "Contrast ratio for two hex colors",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-08T04:40:12.991062Z",
        "status": "active",
        "statusChangedAt": "2026-09-08T04:40:12.991062Z",
        "updatedAt": "2026-09-08T04:40:12.991062Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Contrast ratio for two hex colors",
      "name": "io.github.sadri-dridi/contrast-ok",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/contrast-ok/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/sadri-dridi/named-mcp-utilities"
      },
      "title": "Contrast ratio for two hex colors",
      "version": "1.0.0"
    }
  },
  "source": "mcp_registry",
  "summary": "Contrast ratio for two hex colors"
}

What the leaf hashes

{"body":"871f2b1b12b2ae1e8268d0f603a6867bea657a4e613900bcd79abb35c1d9a7d7","id":49542,"kind":"listing","method":"baseline/1","observed_us":1793025413800899,"prev":null,"subject":"mcp_registry:io.github.sadri-dridi/contrast-ok","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. 0xc94ebf634f9bc87033eb6fd1a0ef16985af3515c605cb38bd794028c70b8119d
2. 0xf5e79d948a454409a8ffc6089b0421d86235ff04fb6060db1c4bf5869b8bb15b
3. 0x590e2512b31c70d3082a87e4aae70b8e3c183ac3469ada9920291b5cd82dc0b9
4. 0x2212c304514ea915b02bf4035dfb6adc52e676a12a7f743880bd7cb246da9b88
5. 0xa7c115779254e3244fe10fd437edb785e5f6f00b55068ed1a381896fcd0f84bb
6. 0x78dfa1af404ab1b324c0ed1f64f6b1ec02a72c3e2fdca568f8bfd83efbbfa68b
7. 0xadf26817a2c05c24efe646032328e83226cc3b510be137dd1afaa4e918857291
8. 0x255e3653b29f1d3f38ea6a63c011b2be8e384400e8e4e5c80443655c0061fd17
9. 0x19371ac31dc54dd266460f6772fd154ff43f2492dbc49df948134b9503159020
10. 0xaf49c58b07f643adc422bcd56cf09b773ac862513c92c8ec09dac6240a88a8cc
11. 0xde080106ffe5b9071b2505ae31b17f7da4d3a9c7f4f4d9819f700d720702beeb
12. 0xde09984239f27618a13932caf48f5d39831fc5021500b0581dce0dabd570bd6e
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae