Evidence row 74348

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://dt0ur.online/api/onchain/gas"
    ]
  ],
  "name": "dt0ur.online/api/onchain/gas",
  "owner_address": "0x7f520c845d5dc5e51a27699a1f098dc13aa789b7",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x7f520c845d5Dc5e51a27699A1f098dc13Aa789b7",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
        },
        "maxTimeoutSeconds": 60,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "6PSaCVqWbKh5oYUEpHohs8krmLsRQDrnMzKvxAySGsQX",
        "scheme": "exact"
      }
    ],
    "description": "Live gas prices across base, ethereum, arbitrum, optimism, polygon, bsc, sorted cheapest first: base fee and gas price in gwei, plus the USD cost of a native transfer and of an ERC-20 transfer on each chain, so an agent can pick where to transact.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "chains": [
                "base",
                "ethereum",
                "arbitrum"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "chains": [
                {
                  "base_fee_gwei": 0.005,
                  "block_number": 51655589,
                  "chain": "base",
                  "chain_id": 8453,
                  "erc20_transfer_usd": 0.001073,
                  "gas_price_gwei": 0.006,
                  "native_price_usd": 2752.08,
                  "native_symbol": "ETH",
                  "native_transfer_usd": 0.0003468
                },
                {
                  "base_fee_gwei": 0.02024,
                  "block_number": 507864148,
                  "chain": "arbitrum",
                  "chain_id": 42161,
                  "erc20_transfer_usd": 0.003616,
                  "gas_price_gwei": 0.02024,
                  "native_price_usd": 2748.73,
                  "native_symbol": "ETH",
                  "native_transfer_usd": 0.001168
                },
                {
                  "base_fee_gwei": 0.154926806,
                  "block_number": 26034738,
                  "chain": "ethereum",
                  "chain_id": 1,
                  "erc20_transfer_usd": 0.02768,
                  "gas_price_gwei": 0.154926806,
                  "native_price_usd": 2748.73,
                  "native_symbol": "ETH",
                  "native_transfer_usd": 0.008943
                }
              ],
              "cheapest_chain": "base",
              "note": "Execution fee only; rollups (base, arbitrum, optimism) add a calldata-dependent L1 data fee.",
              "timestamp": "2026-09-22T18:08:45.816Z"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "chains": {
                      "description": "Chains to compare (default: all)",
                      "items": {
                        "enum": [
                          "base",
                          "ethereum",
                          "arbitrum",
                          "optimism",
                          "polygon",
                          "bsc"
                        ],
                        "type": "string"
                      },
                      "type": "array"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T06:26:46.684Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:26:46.376Z"
    },
    "resource": "https://dt0ur.online/api/onchain/gas",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live gas prices across base, ethereum, arbitrum, optimism, polygon, bsc, sorted cheapest first: base fee and gas price in gwei, plus the USD cost of a native transfer and of an ERC-20 transfer on each chain, so an agent can pick where to transact."
}

What the leaf hashes

{"body":"86c61a0c8cb207f422face6ae7647ce0a184ad4b6efe0251a60b025e3708c82a","id":74348,"kind":"listing","method":"baseline/1","observed_us":1793025488826714,"prev":null,"subject":"x402_bazaar:https://dt0ur.online/api/onchain/gas","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x88335e36fa686ecdf9ccd48de79e43480f5c7e24ac149b2d11284df8655b42d3
2. 0xd17b80a40bfac2995d830afafe9e004f0167791558c7aedcd1349fdcc7641368
3. 0x49e7e210cbf1b72db5f1031bd87d239cf4c79022c62e2673029055fa0aba7285
4. 0x431293dfc3cf5d41eb958c33dc30eb807911a6882c17ce12b0997d0d17e63447
5. 0xb614bbbae6bf9295dfb437d7153db9ca271e9c22ad0b85effceff53ed5ca2df5
6. 0x9d723f2c528b18c484fa1537e604f50abda3e17c1cc9bcdacb1fa010f42ffd30
7. 0xe6fe30455dfc1b6ed25cdeb373c3712aa4fc279034cbffdcd386c50ac4b86ba2
8. 0xdeddba4d5bf908200f9e82d944848e91c3403810e06ee9cb5905fc3b71eed72e
9. 0x496ad2c875b9f9238155f8f707e3b22646b3b7589d0f854dc8c7955012827ca8
10. 0xb7586af46bfddb2ee3fc0eb75ae3d787275fe8ca92d7e23797abbeb88c292ae9
11. 0x8c20bf7d4b3dd52508d554a379143f96b80b2bc0af227c0b1ce2e34d99c6430b
12. 0x7bf2d426bb827b94d7608055662cf2e3f09791e1a4c2c6bd606c0a9e89b18e59
13. 0x49d11be052a4c069b10250aaba214f566b3f2e5aaa7a98e82ccc6a71c0e801a0
14. 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae