Evidence row 555354

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.x402node.dev/chain/gas-estimate"
    ]
  ],
  "name": "api.x402node.dev/chain/gas-estimate",
  "owner_address": "0x4466d4a84b7c49a6a094ec6eef4a0712d6dd125e",
  "raw": {
    "accepts": [
      {
        "amount": "12000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e",
        "scheme": "exact"
      },
      {
        "amount": "12000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "CjNFTjvBhbJJd2B5ePPMHRLx1ELZpa8dwQgGL727eKww"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up",
        "scheme": "exact"
      }
    ],
    "description": "Estimates the USD gas cost of a common action (transfer, erc20-transfer, approve, swap, nft-mint) across EVM chains, combining live gas price per chain with the native token price. Lets an agent pick the cheapest chain to execute and budget a transaction. Live aggregated gas + price compute. gas cost estimate, transaction fee usd, cheapest chain to execute, swap gas Accepts payment on Base or Solana — either network works.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "action": "string",
              "chain": "string",
              "gas": "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": {
                    "action": {
                      "description": "transfer/erc20-transfer/approve/swap/nft-mint (default swap)",
                      "type": "string"
                    },
                    "chain": {
                      "description": "optional single chain; omit for all",
                      "type": "string"
                    },
                    "gas": {
                      "description": "optional custom gas units",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-24T07:10:21.974Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-24T07:10:21.827Z"
    },
    "resource": "https://api.x402node.dev/chain/gas-estimate",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Estimates the USD gas cost of a common action (transfer, erc20-transfer, approve, swap, nft-mint) across EVM chains, combining live gas price per chain with the native token price. Lets an agent pick the cheapest chain to execute and budget a transaction. Live aggregated gas + price compute. gas cost estimate, transaction fee usd, cheapest chain to execute, swap gas Accepts payment on Base or Solana — either network works."
}

What the leaf hashes

{"body":"8624b7f02d4e7a49b86647ff59459181bfd84ce09349caedf6e28dc6191828a1","id":555354,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133788223501,"prev":70294,"subject":"x402_bazaar:https://api.x402node.dev/chain/gas-estimate","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. 0x80cadb95d7a787f386361b87feebcec86bd051c4b3704559507a86ac6b1a1b20
2. 0xa138a8ffce983523126253f8484ed2b67312b0cf6090234d43e63ea1cea1bd0e
3. 0x86e73e77cf0443c48084677781917a760f544860953b4e4b96f9c36b6462d62e
4. 0x06d3d39a60634a4438b42ddb251d425c7d664666248e74379e49e51a67f05e0f
5. 0xfac1a92b194fcced2e4b157da0a3a4f0e5236e88af5fb09838cb7071cf153ed7
6. 0x2deacbf63905185f91ef4206f9cb6c68d4ff78349e35cad455f7ff97785f22bb
7. 0xeaa67aad0614987b86c2c7b3f4c8146b3db7512455b7743f0cc4c59dbc0d2acf
8. 0x2d9bd5275eebdccceb1165eecf23bc150612a9ce40b88a2f06b377134b524fd6
9. 0x878db09cf62cfbb259acb9458a88cd24fc53b49a36071f1df76c41cf9c472c56
10. 0x5adf0c0e56ec311cedb1f23a0eb22fbc34e5289b9f16d518b324a08aad04b0c5
11. 0x77641bdba200eb4cdb0cd7e7ae2756494b9b23a0e9cc5f962e803c9224e7281e
12. 0x233ead52b2b0fe0c87ddc3cb1aef399b68e9e9e33cc2fd50a2643345ab7455ad
13. 0xe38e66e8bf48306ee42504c4df50c2052cc9230af02e2ae6ff66da20232bf797
14. 0xfa0c8e8f1a1710ff197533b0a28208f2e168afe71abb7bb3416e09d1ac371d60
15. 0x3c500ec3d3edf0c74b87a6ca8fcd77656bfbe03db3d478bd0c184d0c88839c6b
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4