Evidence row 70294

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": 5,
      "l30DaysUniquePayers": 5,
      "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":"1bea4e250fbd5e3cb08625086774289be70ba5fe894e54f1119923957c2f8346","id":70294,"kind":"listing","method":"baseline/1","observed_us":1793025480132909,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x8e8b515699aba9ff99bb45e8ee4baa10fd3b3488e87a6e93eea220317a54ceb4
2. 0xb6705bd571cdaa0867c38f85b1e16ceec8abdc456f255c764a2338cd12ed4c03
3. 0x3394f15869dd4480ed889131acb925766450068a6bee54c0f7fc0533f560b621
4. 0x128ebb595d5f1c3e05960d31d5e48cd7675f18ad096d747d6944892fc1ff38ad
5. 0x330944a3a4c377da48e40921c093f1d7e2ec4c23f1f8fae748486afdea1037dc
6. 0x425d5e4e0b126226f95a4861eda95ab90919476854b83c03f3add0c4fa4a4259
7. 0xc97d2a9873aa582c20900b5db87cedf831ad9910884970d0535983fae7188517
8. 0x09e96f05ec71bb7575c5a1961a442c6a18c8d873a036587605455a71e989fbc8
9. 0x5c99577550148bb6939bed51ecf55ee45b15ebdb3603fb5a5d328c121e70b4c9
10. 0xb45d7f3c0bbf1dbd174936f74bee2215bba98889ae1b45f88dec07545b773ee4
11. 0xf44f104cf96a81c75851a644746103fcbe6ade398683a18e789cc91eff4537ff
12. 0x59a4efa65a01e4e2abdb3b8b7bb673db6d1c72e0f9d52dd2f94777b14a5b061c
13. 0xc0cb184c9bdf71abcf18fda97bd59289153d120dbf8fee9f517b63bf303deb95
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae