{
  "x402Version": 2,
  "id": 36642,
  "slug": "36642",
  "resource": "https://audit.liquidlogicx.com/api/prove",
  "description": "Payment receipt and settlement proof for x402 and agent payments, by Liquid Logic X. Input: a Base USDC tx hash (optional memo). Output: JSON proof recorded onchain on Arc mainnet (proofId, from/to/amount, Arc tx, refId) plus a public verify link anyone can check. $0.02 USDC on Base, charged only when a proof is returned. Your paying wallet must be the tx sender or recipient. Liquid Logic X also records proofs on Tempo mainnet. Site: https://liquidlogicx.com",
  "type": "http",
  "serviceName": "Payment Receipt/Settlement Proof",
  "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790770824/bazaar-icons/a00cfa28ab21cfd9.png",
  "resourceType": "Payments",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x147991A1c25e78f6D9225d2dBA61eD93A6158c7b",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "20000",
      "amountUsd": 0.02,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "properties": {
          "arc": {
            "properties": {
              "chain": {
                "const": "eip155:5042",
                "type": "string"
              },
              "contract": {
                "const": "0x1de52cbc4490a7873ef007e51cb91a5b374facb1",
                "type": "string"
              },
              "txHash": {
                "description": "Arc tx that recorded the proof",
                "pattern": "^0x[0-9a-fA-F]{64}$",
                "type": [
                  "string",
                  "null"
                ]
              }
            },
            "required": [
              "chain",
              "contract",
              "txHash"
            ],
            "type": "object"
          },
          "memo": {
            "type": "string"
          },
          "proofId": {
            "description": "1-based position in the SettlementProofs registry on Arc",
            "type": [
              "integer",
              "null"
            ]
          },
          "recordedAt": {
            "type": "string"
          },
          "refId": {
            "description": "Settlement ID on Arc = keccak256(srcTxHash, payee, amountUSDC)",
            "pattern": "^0x[0-9a-fA-F]{64}$",
            "type": "string"
          },
          "source": {
            "properties": {
              "amountUsdc": {
                "description": "Decimal USDC, e.g. \"0.05\"",
                "type": "string"
              },
              "chain": {
                "const": "eip155:8453",
                "type": "string"
              },
              "from": {
                "pattern": "^0x[0-9a-fA-F]{40}$",
                "type": "string"
              },
              "timestamp": {
                "description": "Base block time (UTC)",
                "type": "string"
              },
              "to": {
                "pattern": "^0x[0-9a-fA-F]{40}$",
                "type": "string"
              },
              "txHash": {
                "pattern": "^0x[0-9a-fA-F]{64}$",
                "type": "string"
              }
            },
            "required": [
              "chain",
              "txHash",
              "from",
              "to",
              "amountUsdc",
              "timestamp"
            ],
            "type": "object"
          },
          "status": {
            "enum": [
              "recorded",
              "existing"
            ],
            "type": "string"
          },
          "verifyUrl": {
            "description": "Public verifier page on proofs.liquidlogicx.com",
            "type": "string"
          }
        },
        "required": [
          "proofId",
          "status",
          "source",
          "arc",
          "verifyUrl",
          "recordedAt"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "memo": "invoice-42",
            "txHash": "0x93a15735c5b82fb8c9fdc0f7db5d56916a14f6ee4ef343000a29fd55c4bcaf4c"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "arc": {
              "chain": "eip155:5042",
              "contract": "0x1de52cbc4490a7873ef007e51cb91a5b374facb1",
              "txHash": "0x2bb316073c034140d74d73ca67ad2b71bfaaa9dea531d69290a16efdd0f10bbe"
            },
            "memo": "llx-self-test-0.001",
            "proofId": 1,
            "recordedAt": "2026-09-22T15:32:28.000Z",
            "refId": "0xe6db5a86740c0e40943c06268bda4e09b45ac0a45fd6c5d7b7f2550e19e0c50e",
            "source": {
              "amountUsdc": "0.001",
              "chain": "eip155:8453",
              "from": "0xEA24bafbBAF6d7Ba58bE860EE906f0Fe533d167D",
              "timestamp": "2026-09-15T20:38:57.000Z",
              "to": "0x147991A1c25e78f6D9225d2dBA61eD93A6158c7b",
              "txHash": "0x93a15735c5b82fb8c9fdc0f7db5d56916a14f6ee4ef343000a29fd55c4bcaf4c"
            },
            "status": "recorded",
            "verifyUrl": "https://proofs.liquidlogicx.com/proofs?q=0xe6db5a86740c0e40943c06268bda4e09b45ac0a45fd6c5d7b7f2550e19e0c50e"
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "memo": {
                    "description": "Optional plain-text note stored on-chain with the proof (printable ASCII, max 64 chars). Public.",
                    "maxLength": 64,
                    "pattern": "^[\\x20-\\x7E]*$",
                    "type": "string"
                  },
                  "txHash": {
                    "description": "Base mainnet (eip155:8453) transaction hash of a USDC payment (must contain a Transfer from Base USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). Your paying wallet must be its from or to.",
                    "pattern": "^0x[0-9a-fA-F]{64}$",
                    "type": "string"
                  }
                },
                "required": [
                  "txHash"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "arc": {
                    "properties": {
                      "chain": {
                        "const": "eip155:5042",
                        "type": "string"
                      },
                      "contract": {
                        "const": "0x1de52cbc4490a7873ef007e51cb91a5b374facb1",
                        "type": "string"
                      },
                      "txHash": {
                        "description": "Arc tx that recorded the proof",
                        "pattern": "^0x[0-9a-fA-F]{64}$",
                        "type": [
                          "string",
                          "null"
                        ]
                      }
                    },
                    "required": [
                      "chain",
                      "contract",
                      "txHash"
                    ],
                    "type": "object"
                  },
                  "memo": {
                    "type": "string"
                  },
                  "proofId": {
                    "description": "1-based position in the SettlementProofs registry on Arc",
                    "type": [
                      "integer",
                      "null"
                    ]
                  },
                  "recordedAt": {
                    "type": "string"
                  },
                  "refId": {
                    "description": "Settlement ID on Arc = keccak256(srcTxHash, payee, amountUSDC)",
                    "pattern": "^0x[0-9a-fA-F]{64}$",
                    "type": "string"
                  },
                  "source": {
                    "properties": {
                      "amountUsdc": {
                        "description": "Decimal USDC, e.g. \"0.05\"",
                        "type": "string"
                      },
                      "chain": {
                        "const": "eip155:8453",
                        "type": "string"
                      },
                      "from": {
                        "pattern": "^0x[0-9a-fA-F]{40}$",
                        "type": "string"
                      },
                      "timestamp": {
                        "description": "Base block time (UTC)",
                        "type": "string"
                      },
                      "to": {
                        "pattern": "^0x[0-9a-fA-F]{40}$",
                        "type": "string"
                      },
                      "txHash": {
                        "pattern": "^0x[0-9a-fA-F]{64}$",
                        "type": "string"
                      }
                    },
                    "required": [
                      "chain",
                      "txHash",
                      "from",
                      "to",
                      "amountUsdc",
                      "timestamp"
                    ],
                    "type": "object"
                  },
                  "status": {
                    "enum": [
                      "recorded",
                      "existing"
                    ],
                    "type": "string"
                  },
                  "verifyUrl": {
                    "description": "Public verifier page on proofs.liquidlogicx.com",
                    "type": "string"
                  }
                },
                "required": [
                  "proofId",
                  "status",
                  "source",
                  "arc",
                  "verifyUrl",
                  "recordedAt"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    },
    "builder-code": {
      "info": {
        "s": [
          "cdp_sdk_server"
        ]
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "additionalProperties": false,
        "properties": {
          "a": {
            "description": "App builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          },
          "s": {
            "description": "Service builder codes",
            "items": {
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "maxItems": 11,
            "type": "array"
          },
          "w": {
            "description": "Wallet builder code",
            "pattern": "^[a-z0-9_]{1,32}$",
            "type": "string"
          }
        },
        "type": "object"
      }
    },
    "eip2612GasSponsoring": {},
    "erc20ApprovalGasSponsoring": {}
  },
  "tags": [
    "payment-receipt",
    "settlement-proof",
    "verify",
    "x402",
    "usdc",
    "bazaar",
    "builder-code",
    "eip2612GasSponsoring",
    "erc20ApprovalGasSponsoring"
  ],
  "sourceHost": "audit.liquidlogicx.com",
  "lastUpdated": "2026-10-06T04:48:57.649Z",
  "quality": {
    "calls30d": 1,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-10-06T04:48:57.458Z"
  },
  "metadata": {
    "serviceName": "Payment Receipt/Settlement Proof",
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1790770824/bazaar-icons/a00cfa28ab21cfd9.png",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "memo": "invoice-42",
              "txHash": "0x93a15735c5b82fb8c9fdc0f7db5d56916a14f6ee4ef343000a29fd55c4bcaf4c"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "arc": {
                "chain": "eip155:5042",
                "contract": "0x1de52cbc4490a7873ef007e51cb91a5b374facb1",
                "txHash": "0x2bb316073c034140d74d73ca67ad2b71bfaaa9dea531d69290a16efdd0f10bbe"
              },
              "memo": "llx-self-test-0.001",
              "proofId": 1,
              "recordedAt": "2026-09-22T15:32:28.000Z",
              "refId": "0xe6db5a86740c0e40943c06268bda4e09b45ac0a45fd6c5d7b7f2550e19e0c50e",
              "source": {
                "amountUsdc": "0.001",
                "chain": "eip155:8453",
                "from": "0xEA24bafbBAF6d7Ba58bE860EE906f0Fe533d167D",
                "timestamp": "2026-09-15T20:38:57.000Z",
                "to": "0x147991A1c25e78f6D9225d2dBA61eD93A6158c7b",
                "txHash": "0x93a15735c5b82fb8c9fdc0f7db5d56916a14f6ee4ef343000a29fd55c4bcaf4c"
              },
              "status": "recorded",
              "verifyUrl": "https://proofs.liquidlogicx.com/proofs?q=0xe6db5a86740c0e40943c06268bda4e09b45ac0a45fd6c5d7b7f2550e19e0c50e"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "memo": {
                      "description": "Optional plain-text note stored on-chain with the proof (printable ASCII, max 64 chars). Public.",
                      "maxLength": 64,
                      "pattern": "^[\\x20-\\x7E]*$",
                      "type": "string"
                    },
                    "txHash": {
                      "description": "Base mainnet (eip155:8453) transaction hash of a USDC payment (must contain a Transfer from Base USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). Your paying wallet must be its from or to.",
                      "pattern": "^0x[0-9a-fA-F]{64}$",
                      "type": "string"
                    }
                  },
                  "required": [
                    "txHash"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "arc": {
                      "properties": {
                        "chain": {
                          "const": "eip155:5042",
                          "type": "string"
                        },
                        "contract": {
                          "const": "0x1de52cbc4490a7873ef007e51cb91a5b374facb1",
                          "type": "string"
                        },
                        "txHash": {
                          "description": "Arc tx that recorded the proof",
                          "pattern": "^0x[0-9a-fA-F]{64}$",
                          "type": [
                            "string",
                            "null"
                          ]
                        }
                      },
                      "required": [
                        "chain",
                        "contract",
                        "txHash"
                      ],
                      "type": "object"
                    },
                    "memo": {
                      "type": "string"
                    },
                    "proofId": {
                      "description": "1-based position in the SettlementProofs registry on Arc",
                      "type": [
                        "integer",
                        "null"
                      ]
                    },
                    "recordedAt": {
                      "type": "string"
                    },
                    "refId": {
                      "description": "Settlement ID on Arc = keccak256(srcTxHash, payee, amountUSDC)",
                      "pattern": "^0x[0-9a-fA-F]{64}$",
                      "type": "string"
                    },
                    "source": {
                      "properties": {
                        "amountUsdc": {
                          "description": "Decimal USDC, e.g. \"0.05\"",
                          "type": "string"
                        },
                        "chain": {
                          "const": "eip155:8453",
                          "type": "string"
                        },
                        "from": {
                          "pattern": "^0x[0-9a-fA-F]{40}$",
                          "type": "string"
                        },
                        "timestamp": {
                          "description": "Base block time (UTC)",
                          "type": "string"
                        },
                        "to": {
                          "pattern": "^0x[0-9a-fA-F]{40}$",
                          "type": "string"
                        },
                        "txHash": {
                          "pattern": "^0x[0-9a-fA-F]{64}$",
                          "type": "string"
                        }
                      },
                      "required": [
                        "chain",
                        "txHash",
                        "from",
                        "to",
                        "amountUsdc",
                        "timestamp"
                      ],
                      "type": "object"
                    },
                    "status": {
                      "enum": [
                        "recorded",
                        "existing"
                      ],
                      "type": "string"
                    },
                    "verifyUrl": {
                      "description": "Public verifier page on proofs.liquidlogicx.com",
                      "type": "string"
                    }
                  },
                  "required": [
                    "proofId",
                    "status",
                    "source",
                    "arc",
                    "verifyUrl",
                    "recordedAt"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "s": [
            "cdp_sdk_server"
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {},
      "erc20ApprovalGasSponsoring": {}
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "audit.liquidlogicx.com",
    "manifest_name": "audit.liquidlogicx.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "example": {
      "arc": {
        "chain": "string",
        "contract": "string",
        "txHash": "string"
      },
      "memo": "string",
      "proofId": 0,
      "recordedAt": "string",
      "refId": "string",
      "source": {
        "amountUsdc": "string",
        "chain": "string",
        "from": "string",
        "timestamp": "string",
        "to": "string",
        "txHash": "string"
      },
      "status": "recorded",
      "verifyUrl": "string"
    },
    "type": "string"
  }
}