Evidence row 126057

Observed 26 Oct 2026, 14:40 UTC, by baseline/1.

Kind: listing
About: source_record x402_bazaar:https://x402.fairseal.io/v1/notarize
Recorded: 26 Oct 2026, 14:40 UTC
Previous row: None: the first of its kind about this subject
Body SHA-256: 947c579b56d94f1e57da2b711e6ce76ebfa1989a3d90eb5fa0567a00f7a096c3
Leaf: 0xb7a4f484602b020ec2a355ab945a4276827d1fea9b1fb0e20e96ac5e6b8b954d

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.fairseal.io/v1/notarize"
    ]
  ],
  "name": "x402.fairseal.io/v1/notarize",
  "owner_address": "0xbd5eb5559f5ac14475ac0c81b6735a4d9106ce28",
  "raw": {
    "accepts": [
      {
        "amount": "50000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xBd5eB5559f5Ac14475AC0C81b6735A4d9106ce28",
        "scheme": "exact"
      },
      {
        "amount": "50000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "receiverAuthorizer": "0x3721824a31197dcDD2984cF43b92B6cc8A87c0Fb",
          "version": "2",
          "withdrawDelay": 900
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xBd5eB5559f5Ac14475AC0C81b6735A4d9106ce28",
        "scheme": "batch-settlement"
      }
    ],
    "description": "Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof and on-chain anchor_tx available via free GET /v1/notarize/:receipt_id after batch anchors (within batch_threshold receipts or 120s). Include Idempotency-Key header to prevent double-charges on retry.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "metadata": {
                "agent_id": "my-agent-v1",
                "decided_at": "2026-09-12T10:00:00Z",
                "decision_hash": "b94f6f125c79e3a5ffaa826f584c10d52ada669e6762051b826b55776d05a3d7",
                "input_hash": "a665a45920422f9d417e4867efdc4fb8a04a1f3fff1fa07e998e86f7f7a27ae3"
              },
              "payload_hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
              "schema": "agent_decision"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "metadata": {
                      "description": "Schema-specific metadata. agent_decision requires {agent_id, decided_at, input_hash, decision_hash}",
                      "type": "object"
                    },
                    "payload_hash": {
                      "description": "SHA-256 hex of full payload (64 lowercase hex chars)",
                      "pattern": "^[0-9a-f]{64}$",
                      "type": "string"
                    },
                    "schema": {
                      "enum": [
                        "agent_decision",
                        "audit_evidence",
                        "probe_record"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "schema",
                    "payload_hash",
                    "metadata"
                  ],
                  "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": "2026-10-17T13:52:00.754Z",
    "quality": {
      "l30DaysTotalCalls": 9,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-17T13:52:01.325Z"
    },
    "resource": "https://x402.fairseal.io/v1/notarize",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Anchor an AI agent decision or audit record to Base mainnet. Submit {schema, payload_hash (SHA-256 hex, 64 chars), metadata}; service queues into a Merkle batch and returns a receipt with pending_anchor status immediately. Full Merkle proof and on-chain anchor_tx available via free GET /v1/notarize/:receipt_id after batch anchors (within batch_threshold receipts or 120s). Include Idempotency-Key header to prevent double-charges on retry."
}

What the leaf hashes

{"body":"947c579b56d94f1e57da2b711e6ce76ebfa1989a3d90eb5fa0567a00f7a096c3","id":126057,"kind":"listing","method":"baseline/1","observed_us":1793025627164244,"prev":null,"subject":"x402_bazaar:https://x402.fairseal.io/v1/notarize","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).
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Day root: 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
Chained: 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
Published: On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae

How to check it · This row as JSON