Evidence row 443289

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://safetychain.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/safetychain/"
    ]
  ],
  "name": "SafetyChain MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-27T08:35:10.48694Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T08:35:10.48694Z",
        "updatedAt": "2026-10-27T08:35:10.48694Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read SafetyChain food safety records, CAPAs, forms, suppliers, items, locations and equipment.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://usefulapi.io/icon.svg"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "256x256"
          ],
          "src": "https://usefulapi.io/icon-256.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulapi.io/icon-512.png"
        }
      ],
      "name": "io.usefulapi/safetychain",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://safetychain.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/safetychain",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "SafetyChain MCP by usefulapi",
      "version": "1.3.0",
      "websiteUrl": "https://usefulapi.io/safetychain/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read SafetyChain food safety records, CAPAs, forms, suppliers, items, locations and equipment."
}

What the leaf hashes

{"body":"6f1d8b7018f3021d8316211d86297a1d8dc52b9ab55aa315b7b6e0b0478316b8","id":443289,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793093259200652,"prev":56795,"subject":"mcp_registry:io.usefulapi/safetychain","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0x17ff3ae7f15b70533d81825c64eeb9c16ffead673047bdcef1abb2987fa9dd5b
2. 0x934babc1a0b34f7a8eed845664a2432aed24f0ca0fce6e2cb068a8c204b2f5e0
3. 0x19b3fe45fefbd58c560e15b99e05ea4797c7b6d4c6a9b39f36c8385504a13772
4. 0xa7e23329ae50659977b1209ff0135bf5d4a2c100fb9fb19f48b471dc01543919
5. 0xef5bccf7053a4fb30ce61533fdb77ddc491329df3f56d0037959d60c2217c0b5
6. 0xdee9a2474ac9906d3a9cd704b9207cf5e828437ce50ff3977eb0d88426105b48
7. 0x1e38b231faed1011791cd87303ca35b0cc88925f705705f63f7b3975dfffa687
8. 0xd21672e9a9b8e5583811a42b6b66c4700d8c3eb9ad2fc8cd98a76f58705e0ef0
9. 0xc08f8c0e5f2c97b04fc5dec0440213ed03e364d5c461d5f6f2d2682e46d27652
10. 0xcc4a5e968f8104975c0d4e73f435fe9abd4c13bd43300bcd5458a7c5e6bb099a
11. 0xf79d4220a9fc71105fb136100defea9d0ad81dbe57947e6220e673f633a3e805
12. 0x7afa806e5533c63e57a18fda23b38702b370e8b298a35edc0c1de641c8ffcaec
13. 0xca0b37bb3b043ccf0f24c50fccd9c2f22b7e5290df49886008fc2ff55380fdd1
14. 0x2064e3a2b01d0d12d5079bf720a0d0125e9703c55e92de54ad40c302469ec047
15. 0x6913cb48392acb8dc5c940dcdb6e6fc889d544f85dff11da249551a5f027e688
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4