Evidence row 519460

What was observed

{
  "endpoints": [
    [
      "web",
      "https://proofcheck.something-agent.workers.dev/"
    ],
    [
      "mcp",
      "https://proofcheck.something-agent.workers.dev/mcp"
    ]
  ],
  "name": "ProofCheck",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-27T16:45:33.749383Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T16:45:33.749383Z",
        "updatedAt": "2026-10-27T16:45:33.749383Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Free x402 offer/receipt checker: verifies signatures and whether the signer fits the host.",
      "name": "io.github.something-agent/proofcheck",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://proofcheck.something-agent.workers.dev/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/something-agent/proofcheck"
      },
      "title": "ProofCheck",
      "version": "0.1.0",
      "websiteUrl": "https://proofcheck.something-agent.workers.dev"
    }
  },
  "source": "mcp_registry",
  "summary": "Free x402 offer/receipt checker: verifies signatures and whether the signer fits the host."
}

What the leaf hashes

{"body":"689c36f9ca7bcef5a559d4a8ce939816adffed42af10e269eb097ddfb4dc5ed0","id":519460,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793122147436462,"prev":null,"subject":"mcp_registry:io.github.something-agent/proofcheck","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. 0x87b98f8bb6ce2cd085e87b9c5cde8b1615041c96e201078cb81a9365dfd80120
2. 0x9173f8f1c5b5d7d610916d2dd38fc89cc831eb519a21fa65da45fd4b9bf11242
3. 0x8816ad75a1f3b5ebad593ebc240a9e4e96941cffe194d425ad05e71348b9f93f
4. 0xdb389b45ca9e1099b9d1cddecdb55f8c04a123026bfb4ff73688d21c78eb2e7a
5. 0xc42627158c1a76e3d4916867b225ae09745ea758416b206b8ee7949a7211953a
6. 0x5f877b709ce500dd3e3300ecdd874057efa6cc6bc3a5a997efb9e325304d246e
7. 0x4a883cd7c412c9c724558584dad32a340bcb9c6bf9980bbc7dbc395a0da9e600
8. 0xf0626bef5d06412a8f8d19d0c90c6b9ddc145700f037805f5ad7755438b4b5c3
9. 0x4861721e114e2f2f342bf5cf33a2ca3760578f27c7d69c10754c63118b754b09
10. 0x9dc25a7fda1522dda5d2072e86165df16f49960ad44e48a53e9d50481f9174bc
11. 0x75376c2d4b66495f3289538d2a16eac6d0471b87780b054af7810e758374d02a
12. 0x470f6acef0d823e6f9e5fa35684563c8f27c3d338b165b457171afc3d44d4d86
13. 0x6251e2be57e8d16b82579481d181c265d75096882014489550b74a728741f2f1
14. 0x4964f0806efde5ed25f60da2b45d78cd2e0f07d67e64aad2822f6016ad973c47
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4