Evidence row 40541

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://horizon.leocelis.com/sse"
    ],
    [
      "web",
      "https://leocelis.github.io/horizon"
    ]
  ],
  "name": "Horizon Fidelity Monitor",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-05-06T23:14:11.413858Z",
        "status": "active",
        "statusChangedAt": "2026-05-06T23:14:11.413858Z",
        "updatedAt": "2026-05-06T23:14:11.413858Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Tracks conversation health in real time — drift, desync, and causal collapse — for any AI agent.",
      "name": "io.github.leocelis/horizon-fidelity-monitor",
      "remotes": [
        {
          "headers": [
            {
              "description": "API key for the Horizon hosted server. Request one at https://github.com/leocelis/horizon/discussions",
              "format": "string",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization",
              "value": "Bearer {api_key}"
            }
          ],
          "type": "sse",
          "url": "https://horizon.leocelis.com/sse",
          "variables": {
            "api_key": {
              "description": "Your Horizon API key. Request one at https://github.com/leocelis/horizon/discussions",
              "format": "string",
              "isRequired": true,
              "isSecret": true
            }
          }
        }
      ],
      "repository": {
        "id": "1219148287",
        "source": "github",
        "url": "https://github.com/leocelis/horizon"
      },
      "title": "Horizon Fidelity Monitor",
      "version": "0.2.1",
      "websiteUrl": "https://leocelis.github.io/horizon"
    }
  },
  "source": "mcp_registry",
  "summary": "Tracks conversation health in real time — drift, desync, and causal collapse — for any AI agent."
}

What the leaf hashes

{"body":"eb24b0da3ea6bbc1f53541cd89f8e67c71205d73730e3c3f1173d35445eae236","id":40541,"kind":"listing","method":"baseline/1","observed_us":1793025397464249,"prev":null,"subject":"mcp_registry:io.github.leocelis/horizon-fidelity-monitor","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. 0x8bdd89e73d6cca031356c9417f93037ecf251a89800d47f82e3939e8cb36516f
2. 0x759075767a0e8493370c849de806790b22d3c6a3f131e3999c8590be7d76dcea
3. 0x847a51871b2ae059af30720fbd74df0b4a880b957f292403fd4ffe3afd463449
4. 0x00f498f88e78081c76b9cc1693333e8445b0ab3b782960ccea597d1cbc4bbf12
5. 0xd9313e2423a32a152d65c97dafd12c23319ada622524d2df5430203812a1babe
6. 0x1346b9130c2e84c70d19988c17551c2be1e99a4d7666b473711326c198a83e18
7. 0x972c59e16aa674e0f617dfa9ef7ec569ce11f9a3d1e9218251501396738387ec
8. 0x4ff3deeb7d6128c755044741afeddc6617d675b91e3b514ceb96c9693d152168
9. 0xc72282c0b45ff3f519592065e737fbf899f9608fa2d1d8e93804eb5365037610
10. 0x6ddbfc11a7759e428ac6be29ebc89a10db0158bf96c5d141eb5c2695e3450573
11. 0xc0c39d9d8be0b7d600d3badab7754e326243b0d4eb60c4b5cd965d7d764d1d04
12. 0xfc86b2282cb8f91e68280efe01f3c50453c94fae2ef04af1a75d4b05d0af2b8f
13. 0xd5ec7ffaecac790d8adfa0620b0a5494758f862e3090b49e556a6ecbad2f0782
14. 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae