Evidence row 1034172

What was observed

{
  "endpoints": [
    [
      "web",
      "https://omnicost.com/"
    ],
    [
      "mcp",
      "https://omnicost.com/api/mcp"
    ]
  ],
  "name": "Omnicost",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-29T15:54:23.623585Z",
        "status": "active",
        "statusChangedAt": "2026-10-29T15:54:23.623585Z",
        "updatedAt": "2026-10-29T15:54:23.623585Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Construction unit prices with source and date for Spain, the US and the EU. Search and item tools.",
      "name": "com.omnicost/catalog",
      "remotes": [
        {
          "headers": [
            {
              "description": "Bearer token with your Omnicost organization API key",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization",
              "value": "Bearer {api_key}"
            }
          ],
          "type": "streamable-http",
          "url": "https://omnicost.com/api/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/sinequix/omnicost-mcp"
      },
      "title": "Omnicost",
      "version": "1.0.0",
      "websiteUrl": "https://omnicost.com"
    }
  },
  "source": "mcp_registry",
  "summary": "Construction unit prices with source and date for Spain, the US and the EU. Search and item tools."
}

What the leaf hashes

{"body":"05f1c5a639e4b03b6febe7b7ef1c32b713c667208157fc73902d6cb4e45b6111","id":1034172,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793290410519190,"prev":null,"subject":"mcp_registry:com.omnicost/catalog","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0x5ff1f8737a5714d82465672267f1a37d42e3f57b850045e66509ea10f7b94406
2. 0x5078a16bfcd82ba20b46d48fdd5a3fa2c8e1c463f11ef4e617923a432c28ae09
3. 0x3af1e9b1fdc9f48bfbe83d418d68119b6bb317072a0b3a312bfcc0e5f18460a0
4. 0xe6c5dd2dea313dd0494891b1d0274c2239819e79e65c1e6fb4797aa6564869ab
5. 0x11b406b39606a51923bd10999cb7eff1c6ac0c40618e028f1b3a3544d7d797d9
6. 0x87655558d8170b0c28ebfd696935d1bbd038cfdc33cd4e04bdb5401100d2f92a
7. 0x9781a1893ad1e63b01f20f98d7983f5cb9a642c63717f009936360c940023528
8. 0xd2ff3a1c0bef6dfa715d9f9faef21ab5116e46fe3176e9669a2f6f4b1ae65838
9. 0x3c5a8153de37b4511207f408cbb6e028ccf6e6e5c2746708f662c8d0490e8fed
10. 0x139ebe15ff43b63d15d024ee8452b02ae59f79a1d58c3546c2c0a323fc2b7bdf
11. 0xda9f1ed41eaae7b65f7e1f7631fb4f684f778c02cbfd5e9333b88fe6fe6376de
12. 0xf1660b18a8e8edb8734c77f32a7089ce48701a59d7e8c33412c0ae2fa901d40c
13. 0xc90367b07a500caa9d82d581b4945e6249bed8be8c5175223f7b366bf9ff9d37
14. 0xa523bd4cbb3e762fe27dc53a6d42747aef6e5dea4f602786fa6968d56a8842bf
15. 0x5c72917224317e5d0d7a0d4ada19337530fcd8b513d6fc46866876f7844efe17
16. 0x976395aaca1b771b7e37710dee4157412909d2398c44e306a2e1e3fe83b984fd
17. 0x91f12a2db1e2c1be07cbe4de3981a37a33051a36d3c3eee5a260804add6d1d75
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1