Evidence row 452175

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.blockchain.info/explorer-gateway-kt/x402/charts/avg-block-size"
    ]
  ],
  "name": "Blockchain.info API",
  "owner_address": "0x995ffef6c39234f0bbc95cf0e84fe1b6e6e2d8e0",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bda02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x995ffeF6c39234F0bBc95cf0E84FE1B6e6e2d8e0",
        "scheme": "exact"
      }
    ],
    "description": "Paid AI-agent access to Blockchain.com Explorer API",
    "extensions": {
      "bazaar": {
        "description": "Get average Bitcoin block size chart data (paid via x402)",
        "info": {
          "input": {
            "body": {
              "cors": false,
              "format": "json",
              "metadata": false,
              "rollingAverage": "8h",
              "sampled": true,
              "timespan": "1y"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "description": "The average block size in MB.",
              "name": "Average Block Size",
              "period": "day",
              "status": "ok",
              "unit": "MB",
              "values": [
                {
                  "x": 1704067200,
                  "y": 1.62
                },
                {
                  "x": 1704153600,
                  "y": 1.71
                }
              ]
            },
            "format": "application/json",
            "type": "json"
          }
        },
        "method": "POST",
        "schema": {
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "cors": {
                      "default": false,
                      "description": "Enable CORS headers",
                      "type": "boolean"
                    },
                    "format": {
                      "default": "json",
                      "description": "Response format:\n- `json` — Returns structured JSON with metadata and values\n- `csv` — Returns raw CSV data with timestamp and value columns (no metadata)\n",
                      "enum": [
                        "json",
                        "csv"
                      ],
                      "type": "string"
                    },
                    "metadata": {
                      "default": false,
                      "description": "Include metadata in response",
                      "type": "boolean"
                    },
                    "rollingAverage": {
                      "default": "8h",
                      "description": "Rolling average window (e.g., \"8h\", \"24h\")",
                      "example": "8h",
                      "type": "string"
                    },
                    "sampled": {
                      "default": true,
                      "description": "Apply sampling to reduce data points",
                      "type": "boolean"
                    },
                    "timespan": {
                      "default": "1y",
                      "description": "Time period (e.g., \"24h\", \"7d\", \"1y\", \"3y\")",
                      "example": "1y",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "const": "json"
                },
                "method": {
                  "const": "POST"
                },
                "type": {
                  "const": "http"
                }
              },
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "description": {
                      "type": "string"
                    },
                    "name": {
                      "type": "string"
                    },
                    "period": {
                      "type": "string"
                    },
                    "status": {
                      "type": "string"
                    },
                    "unit": {
                      "type": "string"
                    },
                    "values": {
                      "items": {
                        "properties": {
                          "x": {
                            "format": "int64",
                            "type": "integer"
                          },
                          "y": {
                            "format": "double",
                            "type": "number"
                          }
                        },
                        "required": [
                          "x",
                          "y"
                        ],
                        "type": "object"
                      },
                      "type": "array"
                    }
                  },
                  "required": [
                    "status",
                    "name",
                    "unit",
                    "period",
                    "description",
                    "values"
                  ],
                  "type": "object"
                },
                "format": {
                  "const": "application/json"
                },
                "type": {
                  "const": "json"
                }
              },
              "type": "object"
            }
          }
        },
        "serviceName": "Explorer Gateway API",
        "tags": [
          "Charts"
        ]
      }
    },
    "lastUpdated": "2026-10-27T10:00:11.648Z",
    "quality": {
      "l30DaysTotalCalls": 11,
      "l30DaysUniquePayers": 6,
      "lastCalledAt": "2026-10-25T20:54:07.419Z"
    },
    "resource": "https://api.blockchain.info/explorer-gateway-kt/x402/charts/avg-block-size",
    "serviceName": "Blockchain.info API",
    "tags": [
      "ai-agent"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Paid AI-agent access to Blockchain.com Explorer API"
}

What the leaf hashes

{"body":"728306b28c26cd51ace264bffad62f654dcfe358f89dfa5b680c278e1bd1da7d","id":452175,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100518478385,"prev":65252,"subject":"x402_bazaar:https://api.blockchain.info/explorer-gateway-kt/x402/charts/avg-block-size","subject_kind":"source_record"}

Proof

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