Evidence row 407493

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.firstmention.uk/s/txpreflight/verify"
    ]
  ],
  "name": "txpreflight",
  "owner_address": "0xe029fcf4ba573f6fdc282208fe855df8cbb3ca9a",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe029Fcf4ba573F6fdc282208fe855dF8CBb3Ca9A",
        "scheme": "exact"
      }
    ],
    "description": "Base agent toolbox. /preflight simulates a tx (revert reason, gas, EIP-1559 fees in ETH and USD) before you sign. /verify reads a receipt and proves a USDC transfer settled: confirmations, amount, sender, recipient.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "amount_usd": 5,
              "pay_to": "0xe029fcf4ba573f6fdc282208fe855df8cbb3ca9a",
              "tx": "0x54002146b9c089ad89c91d1750b45d0c35e133caa5b0a536df8f57e9c2a4a74b"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "block": 53042026,
              "chain": "base",
              "check": {
                "amountMet": true,
                "asset": "USDC",
                "recipientMet": true
              },
              "confirmations": 27804,
              "ok": true,
              "status": "success",
              "verdict": "settled"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "headers": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "type": "object"
                },
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "amount_usd": {
                      "description": "/verify: minimum USD that must have transferred",
                      "type": "number"
                    },
                    "asset": {
                      "description": "/verify: ERC-20 to check (default USDC on Base)",
                      "type": "string"
                    },
                    "pay_from": {
                      "description": "/verify: require this sender",
                      "type": "string"
                    },
                    "pay_to": {
                      "description": "/verify: require this recipient",
                      "type": "string"
                    },
                    "tx": {
                      "description": "Transaction hash, 0x + 64 hex",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "block": {
                      "type": "number"
                    },
                    "chain": {
                      "type": "string"
                    },
                    "check": {
                      "properties": {
                        "amountMet": {
                          "type": "boolean"
                        },
                        "asset": {
                          "type": "string"
                        },
                        "recipientMet": {
                          "type": "boolean"
                        }
                      },
                      "type": "object"
                    },
                    "confirmations": {
                      "type": "number"
                    },
                    "ok": {
                      "type": "boolean"
                    },
                    "status": {
                      "type": "string"
                    },
                    "verdict": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T04:17:47.254Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-26T05:50:27.535Z"
    },
    "resource": "https://api.firstmention.uk/s/txpreflight/verify",
    "serviceName": "txpreflight",
    "tags": [
      "base",
      "usdc",
      "settlement",
      "x402",
      "gas"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Base agent toolbox. /preflight simulates a tx (revert reason, gas, EIP-1559 fees in ETH and USD) before you sign. /verify reads a receipt and proves a USDC transfer settled: confirmations, amount, sender, recipient."
}

What the leaf hashes

{"body":"8a966a1994fa3dbb5ebbfac786cee6a99d83d6acb5a45a96082d6485044b983a","id":407493,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080248958308,"prev":18494,"subject":"x402_bazaar:https://api.firstmention.uk/s/txpreflight/verify","subject_kind":"source_record"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.