Evidence row 800559

What was observed

{
  "endpoints": [
    [
      "web",
      "https://backroom-api-wmk6.onrender.com/backroom/api/docs"
    ]
  ],
  "name": "Backroom",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-28T20:06:15.395401Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T20:06:15.395401Z",
        "updatedAt": "2026-10-28T20:06:15.395401Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Invoice extraction for agents: submit a PDF, get verified structured data — never a guess.",
      "name": "io.github.pardhuparimi/backroom",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Your Backroom API key. Mint a free test key at https://backroom-api-wmk6.onrender.com/backroom/get-a-key",
              "isRequired": true,
              "isSecret": true,
              "name": "BACKROOM_API_KEY"
            },
            {
              "description": "Backroom API base URL override; defaults to the production API.",
              "name": "BACKROOM_API_BASE"
            }
          ],
          "identifier": "backroom-mcp",
          "registryType": "pypi",
          "runtimeHint": "uvx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.1.0"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "mcp",
        "url": "https://github.com/pardhuparimi/backroom"
      },
      "title": "Backroom",
      "version": "0.1.0",
      "websiteUrl": "https://backroom-api-wmk6.onrender.com/backroom/api/docs"
    }
  },
  "source": "mcp_registry",
  "summary": "Invoice extraction for agents: submit a PDF, get verified structured data — never a guess."
}

What the leaf hashes

{"body":"f99a395731603a8f039475c371405b85fcf2695810491df964bfda5702ba8cc6","id":800559,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793218349946938,"prev":null,"subject":"mcp_registry:io.github.pardhuparimi/backroom","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x15fecae07e77e07e2423878cb0bda733dd9ab2047cd4d51406bc7a14b59156c8
2. 0x27ab5c40a48df151de80c4b3fdbf97e693b894491377325a1ecec1f105d63127
3. 0x023dc04558b82d425b9b431b0bf73fc8b0fa61e501f68cf5442d4cd09bb405e2
4. 0xd6344714b9491f050e3eec8c44838bb5d2114a624a3260e5e20d24c7cf5426d9
5. 0x8d930dcfbdb67de747602e589cf4a6f9fdc7252aa5a631b7392afec8f3cda4a6
6. 0x10bcd227080a8583760e2b861f2c96182f6fff1eb82f466a895f80eaaf3fbb7f
7. 0xde36aec3d6c9fd4e559ac42f7d5826c2a5cfccf3caf36f89d7c85637d4f6428c
8. 0x2931571c4f3f478ea77afa306271d9ddcebdd43dd33e10c23d8e3db8f1351a13
9. 0x96911679e77f51647584d9c4a8ab60de19c758f4735158da92d0d9d7a4849b83
10. 0xff67e27c02f8242516876b167411b74b3f2b563dbab435efd9979cabb5d81b7d
11. 0xb10705f81943cd4fbe0a546ed91726ca401baeb3464ea12e96cb49674f018670
12. 0x71efc28c2e14cb043457b6e4ace2ab05dc5b4575f4ad63fd87b311c3af7569aa
13. 0x7fa5866908096f0b22f929078a2cec5d1e2891fa5835c6c55f26448d682790ec
14. 0xdf8e9d4c523b87b2bea3cc4d461fe94e163080e98a261c596a4641e3fcaf7cc4
15. 0x4698ebc7cbcb2286f661b867355eb6a9183e884482ee16965889e886b17d19ac
16. 0x35e8995c30094446ec790423171382fccb377081b921295b0ae3840cc2c4f52c
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae