Evidence row 16547

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://quickbuild.quynguyenbac.workers.dev/api/base/gas"
    ]
  ],
  "name": "QuickBuild",
  "owner_address": "0x751a4c3841be287544c371b4ee09bd3366aea7cf",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x751a4c3841bE287544C371B4EE09Bd3366AeA7cf",
        "scheme": "exact"
      }
    ],
    "description": "Live gas snapshot for Base mainnet (chain 8453) read from public Base RPC: latest block number/time/utilization, base fee, eth_gasPrice, eth_maxPriorityFeePerGas, the last 10 blocks of base fees, slow/standard/fast EIP-1559 fee suggestions (10th/50th/90th percentile tips) in gwei and wei, and the estimated total cost (L2 execution + OP Stack L1 data-fee upper bound) of an ETH transfer, an ERC-20 transfer and a swap in ETH and USD (Chainlink ETH/USD on Base). No params. Cached 4 s. Errors are...",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "baseFeeGwei": 0.005,
              "blockNumber": 52868139,
              "blockTimestamp": "2026-10-20T19:47:05.000Z",
              "blockUtilization": 0.0652,
              "chainId": 8453,
              "estimatedCost": {
                "erc20Transfer": {
                  "eth": 3.92303e-7,
                  "gas": 65000,
                  "usd": 0.000955
                },
                "ethTransfer": {
                  "eth": 1.27598e-7,
                  "gas": 21000,
                  "usd": 0.000311
                }
              },
              "ethUsd": 2433.71,
              "gasPriceGwei": 0.006,
              "maxPriorityFeeGwei": 0.001,
              "network": "base",
              "suggested": {
                "standard": {
                  "maxFeePerGasGwei": 0.011,
                  "maxPriorityFeePerGasGwei": 0.001
                }
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {},
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "baseFeeGwei": {
                      "type": "number"
                    },
                    "blockNumber": {
                      "type": "integer"
                    },
                    "blockTimestamp": {
                      "type": "string"
                    },
                    "blockUtilization": {
                      "type": "number"
                    },
                    "chainId": {
                      "type": "integer"
                    },
                    "estimatedCost": {
                      "description": "ethTransfer/erc20Transfer/swap: gas, l1DataFeeWei, totalWei, eth, usd",
                      "type": "object"
                    },
                    "ethUsd": {
                      "type": [
                        "number",
                        "null"
                      ]
                    },
                    "gasPriceGwei": {
                      "type": "number"
                    },
                    "maxPriorityFeeGwei": {
                      "type": "number"
                    },
                    "suggested": {
                      "description": "slow/standard/fast: maxFeePerGas + maxPriorityFeePerGas (gwei and wei)",
                      "type": "object"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T12:05:02.496Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-26T12:05:01.47Z"
    },
    "resource": "https://quickbuild.quynguyenbac.workers.dev/api/base/gas",
    "serviceName": "QuickBuild",
    "tags": [
      "base",
      "gas",
      "crypto",
      "onchain",
      "evm"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live gas snapshot for Base mainnet (chain 8453) read from public Base RPC: latest block number/time/utilization, base fee, eth_gasPrice, eth_maxPriorityFeePerGas, the last 10 blocks of base fees, slow/standard/fast EIP-1559 fee suggestions (10th/50th/90th percentile tips) in gwei and wei, and the estimated total cost (L2 execution + OP Stack L1 data-fee upper bound) of an ETH transfer, an ERC-20 transfer and a swap in ETH and USD (Chainlink ETH/USD on Base). No params. Cached 4 s. Errors are..."
}

What the leaf hashes

{"body":"6551d3071c54eb847acd4b39ed0e43924f1769a60948be4e4c35298e3bf7de21","id":16547,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025324673841,"prev":null,"subject":"x402_bazaar:https://quickbuild.quynguyenbac.workers.dev/api/base/gas","subject_kind":"source_record"}

Proof

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