Evidence row 427368

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.fairseal.io/v1/veo/verify"
    ]
  ],
  "name": "x402.fairseal.io/v1/veo/verify",
  "owner_address": "0xbd5eb5559f5ac14475ac0c81b6735a4d9106ce28",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xBd5eB5559f5Ac14475AC0C81b6735A4d9106ce28",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb",
          "version": "2",
          "withdrawDelay": 900
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xBd5eB5559f5Ac14475AC0C81b6735A4d9106ce28",
        "scheme": "batch-settlement"
      }
    ],
    "description": "Verify and validate AI agent output integrity. Checks structure, SHA-256 hash, and optional cryptographic proof signature. Returns a per-check verdict. Accepts VEO-2 compliant output objects. Use to confirm an AI output has not been tampered with before acting on it.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "confidence": {
                "score": 0.9
              },
              "execution": {
                "model": "gpt-4o",
                "prompt_hash": "sha256:deadbeef"
              },
              "issued_at": "2026-09-12T10:00:00Z",
              "object_class": "VEO-2A",
              "object_id": "veo-abc123",
              "provider": {
                "name": "my-agent",
                "version": "1.0"
              },
              "standard": "VEO",
              "version": "2.0"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "confidence": {
                      "required": [
                        "score"
                      ],
                      "type": "object"
                    },
                    "entropy": {
                      "description": "At least one of execution/entropy required",
                      "type": "string"
                    },
                    "execution": {
                      "description": "At least one of execution/entropy required",
                      "type": "object"
                    },
                    "issued_at": {
                      "type": "string"
                    },
                    "object_class": {
                      "enum": [
                        "VEO-2A",
                        "VEO-2B",
                        "VEO-2C",
                        "VEO-2D"
                      ],
                      "type": "string"
                    },
                    "object_id": {
                      "type": "string"
                    },
                    "provider": {
                      "required": [
                        "name"
                      ],
                      "type": "object"
                    },
                    "standard": {
                      "const": "VEO",
                      "type": "string"
                    },
                    "version": {
                      "const": "2.0",
                      "type": "string"
                    }
                  },
                  "required": [
                    "standard",
                    "version",
                    "object_id",
                    "object_class",
                    "provider",
                    "confidence"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T06:05:31.923Z",
    "quality": {
      "l30DaysTotalCalls": 7,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-27T06:05:31.513Z"
    },
    "resource": "https://x402.fairseal.io/v1/veo/verify",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Verify and validate AI agent output integrity. Checks structure, SHA-256 hash, and optional cryptographic proof signature. Returns a per-check verdict. Accepts VEO-2 compliant output objects. Use to confirm an AI output has not been tampered with before acting on it."
}

What the leaf hashes

{"body":"e9593992ee52f7df44e5def8b1713ca29eeaa1a90bf63992f9fb1081d646e676","id":427368,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793086349117274,"prev":126060,"subject":"x402_bazaar:https://x402.fairseal.io/v1/veo/verify","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. 0x877c3de93a87273af7a9d5e2df928e1c790ccb087d4f88cf6d7b641c2f0c6b0e
2. 0x1e166fdc57414d1aaf60575a82a8527833430a144bd0fabd8a3524b597e1fbbf
3. 0x821b5f6a5664ddc40bcfb1362ecb74806e87f30ba7111fa8190e67729562ab40
4. 0x3db7aae00acaa1fe65beefaf0dfb0b11f3d6e107a476383e246505e3362ebbaa
5. 0x7a87aec9ab6c4ae7b1e83efcbd3c3022d1dc4ac26f97d6051e2322af2dafd4eb
6. 0x82f51ad1056e9c5df6a0f8dacf728c5407d87fd60b32cb4309b2e924c423f7ab
7. 0x9d0eafcc22115a4b6891204203782a56d28ee20e4172379a2e7f56cf479b26ae
8. 0x4d668837707249f9495aec030437c745adc30d93331ea6b71d51104aef07b19e
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