Evidence row 39745

What was observed

{
  "endpoints": [
    [
      "web",
      "https://github.com/json-contracts/json-contracts"
    ]
  ],
  "name": "JSON Contracts",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-05-05T16:22:31.928726Z",
        "status": "active",
        "statusChangedAt": "2026-05-05T16:22:31.928726Z",
        "updatedAt": "2026-05-05T16:22:31.928726Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "JSON contract registry and validator for structured LLM and agent outputs.",
      "name": "io.github.json-contracts/json-contracts",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Folder containing JSON contract files. Defaults to ./json-contracts.",
              "format": "filepath",
              "name": "JSON_CONTRACTS_DIR"
            }
          ],
          "identifier": "json-contracts",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.1.2"
        }
      ],
      "repository": {
        "id": "1230012930",
        "source": "github",
        "url": "https://github.com/json-contracts/json-contracts"
      },
      "title": "JSON Contracts",
      "version": "0.1.2",
      "websiteUrl": "https://github.com/json-contracts/json-contracts#readme"
    }
  },
  "source": "mcp_registry",
  "summary": "JSON contract registry and validator for structured LLM and agent outputs."
}

What the leaf hashes

{"body":"bbf04bb63dcd4e2e2ceff9a87f2fef5b94f39f0baa13091cc6f465a6ad98b9e8","id":39745,"kind":"listing","method":"baseline/1","observed_us":1793025396131430,"prev":null,"subject":"mcp_registry:io.github.json-contracts/json-contracts","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. 0x0d94c4b5487fca19e803ffa1b8402c93fd663708ff49b6e94861a1824db2d37a
2. 0x2765e2764021989d3afec15230bf120cf97a245cadd593e77604f6b0aa2e898b
3. 0x55b15d2a9a5b65c417ddb932c447a4787c75221ec7d4a1b2cf1bd8fc5d888958
4. 0x1518fe096edf8bb1a61fe0b6c9eb47d1b8ffc8ee7d05b270845ebe6e2d37fe6f
5. 0xaf3148b82e0b7ec2fcc444abaab5321aba14ae12b25a269b977e7dfb55e92a5c
6. 0x7671276690ec4e1d07e7e521d34e3d408765a8ae136814f744baebe1ba389eb4
7. 0xc572f8b948bb3e83c43e137cfae56de438af371aa1ef994208172206908cccac
8. 0x843b1d37eb0424f8f59251dd9fcae66138ab41afa34e5003b87c185ca24bd607
9. 0x11453579365b464f8ae186361df4e55e1fa62386275493eb4eb12feb14626e3d
10. 0x6660c80902a0d0eb7e099a74231019f561e7aad745384cd90bc57b2aac09aef3
11. 0xce6314435eaa4c458576d2a1150a919748260a8a10f1eae96b7a8bc75ff32536
12. 0x362683225b724b8d2d652a95968c57a6f4199ed4f2ad60900fc3603492f17520
13. 0x5aefcf9e3d86e125861c0d490079969110eea8fc901ec61531bba10bb58258a1
14. 0xa96bb9408ce00a0d40ddaba8736257dfce76d5478b131d69db1afdf8a824312b
15. 0x7ddc2fead128357f881b63e6c7c26d7fbbb84fca6c7c8e0bbfe386de86ca8d39
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae