Evidence row 37710

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://getamber.dev/api/mcp"
    ],
    [
      "web",
      "https://ambr.run/"
    ]
  ],
  "name": "Ambr",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-04-21T14:34:15.300403Z",
        "status": "active",
        "statusChangedAt": "2026-04-21T14:34:15.300403Z",
        "updatedAt": "2026-04-21T14:34:15.300403Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "_meta": {},
      "description": "Ricardian contracts for AI agents — dual-format, SHA-256 bound, legible by construction.",
      "name": "io.github.getambr/ambr-mcp-server",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://getamber.dev/api/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/getambr/site"
      },
      "title": "Ambr",
      "version": "0.3.0",
      "websiteUrl": "https://ambr.run"
    }
  },
  "source": "mcp_registry",
  "summary": "Ricardian contracts for AI agents — dual-format, SHA-256 bound, legible by construction."
}

What the leaf hashes

{"body":"b15e0ea0d67ff0c1bf89c86728e9501a2020acd67447a32ae4f4fa46285e9c82","id":37710,"kind":"listing","method":"baseline/1","observed_us":1793025390760893,"prev":null,"subject":"mcp_registry:io.github.getambr/ambr-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. 0x3bb97400a3a420f669aa7cc3ad65bf37f4edd020eb3764f6e46065fb6a753838
2. 0x95486ef26c9c6153bcc30d74ab97d723154579fcc6d01e4189a2b4bd6fab83e4
3. 0xb598f049569c4dc90bc3b88342a4500d8d0928eb161721c88d3a52be4963178e
4. 0x0c0370f5cb2b5839f0cb54a808168e7cb610d8e883978a606782374a798e3c82
5. 0x0c3d395d70f7cf0752bad697613cf59cf4469847339a2e8aed633a53ffda693c
6. 0x22df482e3dd6cd807f76940cf1c0f2368d884fb159a730093964afcbb2829e25
7. 0xfd56d98492a7c4e69d0ff4345a2b78dc69f939b60a13ec6c875ad495499a3093
8. 0x128250cc4f932a3f2b23ad9d9e16c0ddb977c9b80c527ab4c9addae77b8fe679
9. 0xf2faf4093728c777232702b119748ec430da4271007ae8518a236a38e4851f96
10. 0x2e8a687ff66d8afe58fa1b3504a221aae25ce629dbb3718301a0d0479898a139
11. 0x876d91ae08f3c341c1d9ba4ed92a9c937c054b5c7d6cd935bb21dda6fb029cac
12. 0xdb4b9388e3fe1df4b04e149e559f925fb354066ae1d2537fd6f918162716fadf
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae