Evidence row 21665

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://api.useholon.com/mcp"
    ],
    [
      "web",
      "https://useholon.com/"
    ]
  ],
  "name": "Holon",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-23T12:59:49.105652Z",
        "status": "active",
        "statusChangedAt": "2026-09-23T12:59:49.105652Z",
        "updatedAt": "2026-09-23T12:59:49.105652Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "One MCP server for every measured agent: search, compare, call agents paid per success, on a budget",
      "name": "com.useholon/holon",
      "remotes": [
        {
          "headers": [
            {
              "description": "Holon agent key, sent as 'Bearer <key>'. Free signup with demo credit at https://api.useholon.com/console",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization",
              "value": "Bearer {holon_agent_key}",
              "variables": {
                "holon_agent_key": {
                  "description": "Your Holon agent key (from https://api.useholon.com/console)",
                  "isRequired": true,
                  "isSecret": true
                }
              }
            }
          ],
          "type": "streamable-http",
          "url": "https://api.useholon.com/mcp"
        }
      ],
      "title": "Holon",
      "version": "0.1.0",
      "websiteUrl": "https://useholon.com"
    }
  },
  "source": "mcp_registry",
  "summary": "One MCP server for every measured agent: search, compare, call agents paid per success, on a budget"
}

What the leaf hashes

{"body":"74ab494cf0b936bd28c40e31595eb2c9f62c8b5d85093d07aaed9085def46dc8","id":21665,"kind":"listing","method":"baseline/1","observed_us":1793025340804267,"prev":null,"subject":"mcp_registry:com.useholon/holon","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. 0x02b537be4a9a8772be5676f1628f37c43d899ecf940f16ab5e6354d996f6f9ac
2. 0x21e690bc8bac966924cd3ce757532f4f62e5080940cc8ce71b2a753fe559f5fe
3. 0x528058cc2ad768ef9f54634944674cb427389897887fa9cf21767fa3595e59f7
4. 0xc23b92360788bdc4c4dacf8d8f75e6772c912d95e04ff6d8632df7c0f9c9669c
5. 0x70a1d195772e8953a1c21046f342854b9182f3fd9df45a167c5605221649a607
6. 0x649156d389bc4f8c924c9250ff990871a247d722b555536d7156b984b8a2d183
7. 0x6915fe9995c2bf44effa4b831bb7394975a4c39bad53e4452211c10fbfa79709
8. 0xe0f68cc38193c8f7d03604a84ca06764cc307830e9282bc1e2179bfa5229bf0d
9. 0x0f72f9b37b4039cbc3aae0497be60babe84e78bbc0183946137d3e4b5bcad991
10. 0x0507461ad0f3996c7ed1e50036c084ea5d5d84cc0a082dd8688f824e00fc6a5b
11. 0x4e18f6df894eff467396bfe85f6d6b90f40522629a1dd7517152c38e1c70e111
12. 0xd75ede2689ed83bbc8980becaf4f32a77c7e05567790cd351e997bb28aa0844c
13. 0x92ff7d176556ddbe3d885e2ab73948b14a6aa3568a8fd237427d4f8415235a23
14. 0xd1d3499072edb10edc68f84bcae2365d2ab534df689250cab18c751b6f13b6ff
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae