Evidence row 786255

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": 1,
      "l30DaysUniquePayers": 1,
      "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":"d3b2240ed5d05631ba22d795dd0af22a966badb1cc3110d58e5b5a297cfbcfca","id":786255,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793211336535895,"prev":74348,"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 2026-10-28 (231336 rows).

1. 0x2ef794c103bbf5645191780c9c7bf8cf6a8aedc03be76df3ab4eb0243fff623b
2. 0x0a3a8e86e792b6557c4055e9d9b3e8394a0fb85d458cfcc770df311adfea8f11
3. 0xebcc4a80f352d503ed420fcaa207544e692710d98d04c52197ddf88fca441f09
4. 0x2cfaa5ad379a9dbd81e8818010f1335aff28d3bd7adc20d0030fd4c0b4ab8c70
5. 0xf9ecd88242d54419221ffa2898fb76448b203fd587e305e47bb18a954c49f047
6. 0x9998b3f43207ffd729e4f181788f2f1dcfe2abeaa57cad7c9fa8a59723d7ff7a
7. 0x010b98cc751ed4a62ffe596321f553ed1088898891e94a3d7b2d85517d6c0d6a
8. 0xf5fee48a8f24d1042647eb498a8ebcfd7b1205353f5f24f875adf8332281dd53
9. 0x6854d248ab6b035374126cf2899b4ea02b601383594712943445c4d64c3d1ac9
10. 0xad715e4905fcfca3abb611a685a0a7143bbab97608234776db71eb3cf61d61c3
11. 0x5177a90fe1db35842c16715c6853f0eebf60d23fa47c98ab0125cd2db0a27032
12. 0x0383fe3255c79fb178376a593551d0aefd8c75bd939df4c4f78d5b4cddb8108a
13. 0x812d7bac70bc08f291fb19afa5eb8416c90a0b364e6f03602654beab04a997ad
14. 0xa96695bb231e3cabeb4f03cab216cc6730b71e2304bf5be1e6c0447ea577aae6
15. 0x8d500b42a7bdba5e17ebd9e6a404f2de5260cf3420865b41e7de8c69434ce413
16. 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae