Evidence row 1790603

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://freetier-agent-api.pages.dev/api/gas"
    ]
  ],
  "name": "Agent Extraction API",
  "owner_address": "0x165eb3dc3e98403ecb1141e90400f5e71806554b",
  "raw": {
    "accepts": [
      {
        "amount": "1500",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x165Eb3dC3E98403ecB1141e90400F5e71806554B",
        "scheme": "exact"
      }
    ],
    "description": "Gas price (5 EVM chains): Live gas prices across 5 EVM chains in one call (Ethereum, Base, Arbitrum, Optimism, Polygon): gas price in gwei, latest block, and the cost of an ETH transfer, an ERC-20/USDC transfer and a swap in native coin and USD, plus a ranking of which chain is cheapest right now. Public RPC nodes with failover; no keys.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chains": "all"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "chains": [
                {
                  "block": 37000000,
                  "chain": "base",
                  "chainId": 8453,
                  "estimates": {
                    "erc20_transfer": {
                      "gas": 65000,
                      "native": "0.00000039",
                      "usd": 0.0012
                    }
                  },
                  "gasPriceGwei": 0.006,
                  "nativeCoin": "ETH"
                }
              ],
              "cheapestForUsdcTransfer": "base",
              "ranking": [
                "base",
                "optimism",
                "arbitrum",
                "polygon",
                "ethereum"
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "chains": {
                      "description": "\"all\" (default) or a comma list: ethereum,base,arbitrum,optimism,polygon",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793252197/bazaar-icons/19906174df41ffa4.png",
    "lastUpdated": "2026-11-01T07:16:46.3Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T07:16:46.175Z"
    },
    "resource": "https://freetier-agent-api.pages.dev/api/gas",
    "serviceName": "Agent Extraction API",
    "tags": [
      "gas",
      "multi-chain",
      "crypto",
      "ethereum",
      "base"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Gas price (5 EVM chains): Live gas prices across 5 EVM chains in one call (Ethereum, Base, Arbitrum, Optimism, Polygon): gas price in gwei, latest block, and the cost of an ETH transfer, an ERC-20/USDC transfer and a swap in native coin and USD, plus a ranking of which chain is cheapest right now. Public RPC nodes with failover; no keys."
}

What the leaf hashes

{"body":"0d3d309de32e3e04ec5dc794ace981d1306a81d4f78a8a0433ec499652d95aea","id":1790603,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793559936161490,"prev":1038851,"subject":"x402_bazaar:https://freetier-agent-api.pages.dev/api/gas","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0x43be64d9a1189ae89988513587de5887049f70a6d1e7e4668951f32c019a271a
2. 0x2f698538573e471b9e91441024e9d7321a7a272232964697f757a9d3f4fd6cd8
3. 0xfbd0fa022b244d0d6506636cae79ff9c58ac83346090d732f520626a53b15195
4. 0x99414c15c1d78d6c2612dd2917064461e4da73c3ccc17b678125ffa8821a448c
5. 0x7523fa44931b41b84e71150b30537581d010b2cae7ffd945bf163194f831d395
6. 0xb806eb4978f2e4e5cb56dd5035a578c13ec4f71cbc306263948e93b4e99a7c5c
7. 0x1bd73d5946ed282656a5e9d604a45a1b48526c856ffe9824c2f5c4b76a3cbde6
8. 0xe15f76e5ad91049fc94032c8c70e2e018f393697ac682b31ce35b44f6690472d
9. 0xbe9ba87c3dee32764f1cd167b660fb44a9095f3000ae7abad4a3030e2031c40b
10. 0x4986a1ed5af496b30352d75fadf3b2d483c6a288e9998124cf58e0c063bfc9b5
11. 0xa81bef7345f800b2feae2a85c15ee548045f0790575c156ed56fd85ef7c156cd
12. 0xa512aefa3742f8f2217e32a01436ec8a845ef3a867bd17d3a3ee2de3875040bd
13. 0xb0ac6ba344d3036c1dcee62f9b248fb9e72f51af0768ac256a6f2e19b8431780
14. 0xafcf38f796fa072123f5d525a88fd2fb85646ecc6e7e9a763c13179738711c9e
15. 0x9518f8c5450505f008d5d964f03e490f2bbe4e73e8c89384cb6b935788ff2107
16. 0x00ec7149eb024693951d82cb635dfa183f4f34dae011e77ba0420a38a378e0aa
17. 0x97f6f39e601b6ef0e47b730aa0488b718c0d7882ad840342bbd7d3a705a1b3a2
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90