Evidence row 261157

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.ustariffrates.com/"
    ],
    [
      "web",
      "https://ustariffrates.com/developers"
    ]
  ],
  "name": "USTariffRates",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-26T15:59:37.970772Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T15:59:37.970772Z",
        "updatedAt": "2026-10-26T15:59:37.970772Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "US HTS search, origin-specific duty breakdowns, tariff sources and missing-fact guidance.",
      "name": "com.ustariffrates/tariff-mcp",
      "remotes": [
        {
          "headers": [
            {
              "description": "Your USTariffRates API key. Account plan and quota limits apply.",
              "format": "string",
              "isRequired": true,
              "isSecret": true,
              "name": "X-Api-Key"
            }
          ],
          "type": "streamable-http",
          "url": "https://mcp.ustariffrates.com"
        }
      ],
      "title": "USTariffRates",
      "version": "1.0.0",
      "websiteUrl": "https://ustariffrates.com/developers"
    }
  },
  "source": "mcp_registry",
  "summary": "US HTS search, origin-specific duty breakdowns, tariff sources and missing-fact guidance."
}

What the leaf hashes

{"body":"dd776c0674e08a4b86a6041176d6ecbdfe0e41b68ff8031139f4974f8743536f","id":261157,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793032167499497,"prev":null,"subject":"mcp_registry:com.ustariffrates/tariff-mcp","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. 0x7cc7f87d85b2c98feb0d01b36c048c0b1cde8f284de72d4c1f18fe2b83e5b533
2. 0xbc5be31b88380eac35c57473fa8b76a8ef4e71c31f57f2964918043469225a07
3. 0xc32cdefd80ec01e9750d22724247c5dd7c344ab2d9ed69d1c86459ba1ca17669
4. 0xdf65f017392582ae42714803028fbfd26d4ee8f4ccf9158c4aa5255849bd00e2
5. 0x243785b6c375c516065e64a1c9fbd458bb18e348b5ff0e7471279fea2ffe2ef5
6. 0x4a7b2f18f6a2ee0b230b9bb5b0c0aa41f8b70ab1a6ed913f59c031e0f69c6be9
7. 0x2cd7371eb98c82aa918b66178ff1654eb67b3f1dad3e8ece7f4a8b0884c14b45
8. 0xbc95e5969ad85e8a0b03139c83f007745cecb6b43af6c7f4e04bd358d4205bdc
9. 0x4a59d37e87bfd6c1a73e2e46dcb996811787999807c2354410bd4889fc4c24ba
10. 0xf0ed0e925a8a7da0329fe426ca59f504fc92f30b2f6f61a5828a859ff9cdb816
11. 0x05b818019343d04f2973b36329a447f88301721891653961b94822610edda553
12. 0x779c77295186b32da6387dfb36d3a76522e7d713472a7cebed7c93529ccc4be6
13. 0x0bffb634300aa5609bddaa79e8d31d7cde36c0a5a4465472f809b9f5287e40d2
14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae