Evidence row 71452

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://base.kagurazaka.dev/v1/authorization"
    ]
  ],
  "name": "x402 Base Tools",
  "owner_address": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
        "scheme": "exact"
      }
    ],
    "description": "Whether a USDC transferWithAuthorization nonce of an authorizer has already been used on Base, which is how an x402 buyer tells a settled payment from one that never landed, plus the authorizer's USDC balance.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "authorizer": "0x5672C104c5A7F931843DD0b4Cc12BA0B525C7BCB",
              "nonce": "0x0000000000000000000000000000000000000000000000000000000000000000"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "usdc_balance": "2.89",
              "used": false
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "authorizer": {
                      "description": "the paying wallet (0x...)",
                      "type": "string"
                    },
                    "nonce": {
                      "description": "the authorization nonce (0x + 64 hex digits)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "authorizer",
                    "nonce"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "usdc_balance": {},
                    "used": {}
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T02:22:51.806Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T02:22:51.674Z"
    },
    "resource": "https://base.kagurazaka.dev/v1/authorization",
    "serviceName": "x402 Base Tools",
    "tags": [
      "x402",
      "usdc",
      "eip-3009",
      "payment",
      "debugging"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Whether a USDC transferWithAuthorization nonce of an authorizer has already been used on Base, which is how an x402 buyer tells a settled payment from one that never landed, plus the authorizer's USDC balance."
}

What the leaf hashes

{"body":"cee990e8822b48ca22fc327821c71bc82a6ad76911ba0f41f78c6e406170f73c","id":71452,"kind":"listing","method":"baseline/1","observed_us":1793025482171946,"prev":null,"subject":"x402_bazaar:https://base.kagurazaka.dev/v1/authorization","subject_kind":"source_record"}

Proof

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