Evidence row 453269

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.x402node.dev/chain/gas-oracle"
    ]
  ],
  "name": "api.x402node.dev/chain/gas-oracle",
  "owner_address": "0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125e",
  "raw": {
    "accepts": [
      {
        "amount": "6000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e",
        "scheme": "exact"
      },
      {
        "amount": "6000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up",
        "scheme": "exact"
      }
    ],
    "description": "Live gas oracle with slow, standard and fast fee tiers computed from recent block fee history - current base fee plus recommended priority fees and the cost of a standard transfer, so agents can set the right gas price and decide when to submit transactions. gas oracle, gas price, recommended gas, gas fee tiers, optimal gas, priority fee, gas estimate, when to transact Accepts payment on Base or Solana — either network works.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "chain": "string"
            },
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "chain": {
                      "description": "base (default), eth, arbitrum, optimism, polygon, bsc",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T08:48:11.825Z",
    "quality": {
      "l30DaysTotalCalls": 99,
      "l30DaysUniquePayers": 21,
      "lastCalledAt": "2026-10-27T04:32:19.264Z"
    },
    "resource": "https://api.x402node.dev/chain/gas-oracle",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live gas oracle with slow, standard and fast fee tiers computed from recent block fee history - current base fee plus recommended priority fees and the cost of a standard transfer, so agents can set the right gas price and decide when to submit transactions. gas oracle, gas price, recommended gas, gas fee tiers, optimal gas, priority fee, gas estimate, when to transact Accepts payment on Base or Solana — either network works."
}

What the leaf hashes

{"body":"68407f224f89be24e2b1a3b35c19dee08f1e4d11f104e5ede0caa672c347a7ca","id":453269,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793100613056264,"prev":426810,"subject":"x402_bazaar:https://api.x402node.dev/chain/gas-oracle","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xaebba246d4fd7a72e42ba93adcbd3703d5d4d05d4a5adb874b7c49ed26fc880c
2. 0xbc61b95c7c536237ccf5fa7317e4b23a20ffbeae510faf5e82b6a67eb8faf423
3. 0x69de6b1129d97f26c399aa5b6889a3fb6eeca3e2bb6368874e1388262f8f4a7b
4. 0x664649fd7b8a5e0f70aff3b779dd89b57f980c5404c03d734cb92f6d329ecd86
5. 0x9d8e5b265c8d3825e1f141c043ca80801c1732e44bcfd03a25213106501c3dff
6. 0x2c90d85c556e7cb1290e4082f0f79d389d473592c12eb375b9883518b5ca368c
7. 0x2999cd657f50f916eac3ea28a49a37a8461fdf53217ca30cffdadd8c6465dbe8
8. 0x41dbce54ce2fdc66ce6dbec910693afcd5eeeaed0748fe1990b2bd7b542f508d
9. 0x67517d585d081d1c9b86f6d972bc890588dee9f37ae1e37462e8bb6ed6ed6bff
10. 0xfb2398796ce51972d9964eeb7752e1a9bd97a1bb1da62a7fa8de5665b92bfcff
11. 0x1554a869917424e4ca64b7d38e6ca6cacdec1cf2cb654fa2dcd18eed4dcb9776
12. 0x4cddbeeac8c1524fc617036c97fadc68ab084810bb271f11ef4210796d067f9d
13. 0x4c82d20074b9d7d77e728b0250a2c662412d8d0f7eccff2d8100bfcc4434597f
14. 0x98c6ed3e7b5bb7f1757a8660af410226a11dd563bf83010040c2ce059ab45e54
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4