Evidence row 409144

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": "2026-10-27T04:32:19.509Z",
    "quality": {
      "l30DaysTotalCalls": 101,
      "l30DaysUniquePayers": 21,
      "lastCalledAt": "2026-10-26T09:08:24.222Z"
    },
    "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":"ab12c3627ce7bddc63b80c2bfc285be2a3d541070836d128eab68baa4ed35a76","id":409144,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793080348725400,"prev":67471,"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. 0x7ed14eb862eed915353201256305bb9363200e9ca0a8c9f70b2bffac1086afef
2. 0xfa2523679a7952737841e3935f16a7805089fde1c2488293ee650089cdf855e7
3. 0xc0d4fd1dd301fc4a1b5263b92405ce05cce2b038395fd6cdd5787ab766004b5a
4. 0xbb8d5b5b72a9808858204daed0dc6da7ba86c029f889d4ed9c301f9fe6035a3a
5. 0xcde8de5d3a57ec1cb39b825a10eda8ae3fd942aba591b724c8b886b8e116afd8
6. 0x42c470192321424333668fae6d649a022f561a5ca2413787531c7c34220f4f30
7. 0xb9ad94eb54c6a4c68a7d14d568908f52745e83d91e5ff9bad3377d04778fb0e5
8. 0x2a76bf9b11050ff08d6c0ddf0c5463665815072dff9cbbd3344d907193cc7747
9. 0x9fc556b45095dfbfde5cc73a618f10d1e3f91ad7c4884414f5268495313a164c
10. 0x570cb12c20cd5012b2bb587c01cdd898d9e25ca22fad8fbf3449412b030ca1ec
11. 0x868e095a0e024f898de0327309385070aef4560771a159bdc58d9e1c53b28672
12. 0x4b98c7145f5ead65ac9430579969acab10bc70758d3533f5a4fd4dbb462a2b61
13. 0xbc7cf10ae301dcdbc5db5be8c29e1b3618ffaf1c196a74cb6a9e6c4fae0bbeed
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4