Evidence row 567078

What was observed

{
  "count": 1,
  "tools": [
    {
      "description": "Fetch a URL, expect an HTTP 402 response, and validate the JSON body against the x402 protocol shape (x402Version, accepts[] fields, resource/description). Free, no account. Returns a pass/fail report with concrete errors and warnings.",
      "inputSchema": {
        "properties": {
          "url": {
            "description": "Absolute http(s) URL of the paid endpoint to check (should return HTTP 402).",
            "type": "string"
          }
        },
        "required": [
          "url"
        ],
        "type": "object"
      },
      "name": "lint_x402_endpoint"
    }
  ]
}

What the leaf hashes

{"body":"19d6e61d3b3fedeb397c7e029aa9a3c41e10692618a34fd488c49e5ed4687f68","id":567078,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793138596236808,"prev":null,"subject":"f6150708-15d8-4d3c-b2db-5c5a61b293e1","subject_kind":"endpoint"}

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. 0xb1848afaff0c9c84dfe02c85f3ef769daf88df39e89efc5af36b3ae5b835b675
2. 0x0ae3b3b7230bcc1c7a1a4376030f41f5baba08f9417afdc75c988db3859ae381
3. 0xdb1826eaf13899219deec7d34c5e707fa5156f4bf0f246de15a7ba069f415e46
4. 0x4527a8e0a93980b529e75f682f947189e47a4b2330da396aa1aa7fc3b055fb78
5. 0xe4e9364d1a6352c2e7f46e89e6085d6e455db0922cdc438c6d68fc91ad924a84
6. 0xf8c9413082b20f9d563a882b3fcffc205360d0aa38fcf51e702cf1380934ec0c
7. 0x5b45547b3a939ab45b5c2392bdebc25d904d58b4f5218385f903e48027d1748a
8. 0x33eb9107cb65715777a6d5adc3dfa6090865d0be1624d88164fd9081825c4399
9. 0x11b36b7663789da621c3596120185c45b92dba31235e39c3fc4b09fc7283f56c
10. 0xb051f096bc79c1bbb03bc79499188f988e7e5dd828351db4070d80477204cc36
11. 0xd1a9e8a17c2c3a118d3b406bbe49f0e2c50cfd03c0e6b4125e82eb782af3a286
12. 0x2d136d228d8bf54a46835cf3532884988271b7ca1e85edf2327300bd225d178e
13. 0xf1104ea7df082465ff9df25ed29be80a0ac7c1c6b25c289b5d2e6ae5e6331952
14. 0x87cb8935612c40b569de008a9bf8218cd24a06f74a7364a1654613d972fe00ed
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4