Evidence row 37510

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://api.placementapi.com/mcp"
    ],
    [
      "web",
      "https://placementapi.com/agents"
    ]
  ],
  "name": "Placement API",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-07T22:59:27.501235Z",
        "status": "active",
        "statusChangedAt": "2026-09-07T22:59:27.501235Z",
        "updatedAt": "2026-09-07T22:59:27.501235Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Buy SEO link placements across every marketplace: verified domains, held prices, one invoice.",
      "name": "io.github.futurebets/placement-api",
      "remotes": [
        {
          "headers": [
            {
              "description": "Bearer <your Placement API key>. Keys are issued at https://app.placementapi.com/dashboard; a read scope can search, plan and compare, an order scope can spend credits.",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization"
            }
          ],
          "type": "streamable-http",
          "url": "https://api.placementapi.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/futurebets/placementapi"
      },
      "title": "Placement API",
      "version": "1.0.0",
      "websiteUrl": "https://placementapi.com/agents"
    }
  },
  "source": "mcp_registry",
  "summary": "Buy SEO link placements across every marketplace: verified domains, held prices, one invoice."
}

What the leaf hashes

{"body":"9e0fc305784235c332cc0e528b383a702680f7f29b572f5af8e23292f36238b3","id":37510,"kind":"listing","method":"baseline/1","observed_us":1793025390447088,"prev":null,"subject":"mcp_registry:io.github.futurebets/placement-api","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. 0xeebe7a35e44d8152a95423cbee038a268851b383954ca54438ab6418ea444e63
2. 0xe2a07029fce08209893741df6ec27aefddae42a369a607a4337a186aea7990c9
3. 0x65dd7845dbf825da5f12ba9ce2953f49250f52854396d50f3c4d3e8c0be72150
4. 0x11c6f5a936d4260a7fc392d11f1fa44ef2de1bd83121753372c5d683479b63ec
5. 0xf555b36cdcf902bcf5de8f00f9892a6460d4c319099b4c979085abda4071682a
6. 0x024fb48ed30663e4139a7c5c0ead9006daa86556580e871793292191b8ed76a8
7. 0x1dd7148a412a194b71360f66816c4c3ed72b719d1d2bea8bccb92a0948da5b20
8. 0x5dda28a9cb5b21a6c7f08ffe0113d809f2239ae042aaa089a6503acd711db86d
9. 0xc2802e175466f90063abc5e22614fde16de6a0b7d11b3f61692936b273000d81
10. 0x6a342165fe5c2fa8b0f8cd8b99ab88e01f9e0a758f16ba9193ba775d71446fbb
11. 0xd1f02e907670bf2f4c72056210a7d4ee252934850293a927f852acd3952f44a4
12. 0xb0cc0b4ce5a68e83d3e3e55b0387f828adf6f5eb6cfa666d75f6e16ed9d89c1f
13. 0x746e9e5b6765727b6b96f41204cc115b0302259f6c67be0cf0efbf245601d500
14. 0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae