Evidence row 547685

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.marketintelligenceapi.com/api/v1/markets/gas"
    ]
  ],
  "name": "Market Intelligence API",
  "owner_address": "0x48d5a78d480b4c32de319c2aef69e682dc304615",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:137",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:42161",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88",
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "9CAhY1vdaZfrfoto3KLQtRAo1dVWxNn5xAfmc2XbZVsf",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:480",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "900",
        "asset": "0x60a3E35Cc302bFA44Cb288Bc5a4F316Fdb1adb42",
        "extra": {
          "name": "EURC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "900",
        "asset": "0x1C60ba0A0eD1019e8Eb035E6daF4155A5cE2380B",
        "extra": {
          "name": "EURC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:480",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      },
      {
        "amount": "1000",
        "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:84532",
        "payTo": "0x48d5A78d480B4C32dE319C2aEF69e682Dc304615",
        "scheme": "exact"
      }
    ],
    "description": "Gas price and transaction fees per chain ($0.001): base fee, priority fee percentiles and the USD cost of a transfer and a DEX swap on Ethereum, Base, Arbitrum, Optimism, Polygon and other EVM chains. Use before sending a transaction to pick the cheapest chain.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "type": "http"
          },
          "output": {
            "example": {
              "chains": [
                {
                  "baseFeeGwei": 0.0071,
                  "chain": "base",
                  "gasPriceGwei": 0.0092,
                  "nativeToken": "ETH",
                  "swapCostUsd": 0.00368,
                  "transferCostUsd": 0.000515
                }
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "additionalProperties": true,
              "properties": {
                "example": {
                  "description": "Example JSON response returned by this endpoint"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input",
            "output"
          ],
          "type": "object"
        }
      },
      "sign-in-with-x": {
        "info": {
          "domain": "api.marketintelligenceapi.com",
          "expirationTime": "2026-10-27T18:16:10.099Z",
          "issuedAt": "2026-10-27T18:11:10.099Z",
          "nonce": "2e38f0e3562103b018bb1949e44795d5",
          "resources": [
            "https://api.marketintelligenceapi.com/api/v1/markets/gas"
          ],
          "statement": "Pay this call from the prepaid credit of this wallet (bought with POST /api/v1/credits/buy/5)",
          "uri": "https://api.marketintelligenceapi.com/api/v1/markets/gas",
          "version": "1"
        },
        "supportedChains": [
          {
            "chainId": "eip155:8453",
            "type": "eip191"
          },
          {
            "chainId": "eip155:137",
            "type": "eip191"
          },
          {
            "chainId": "eip155:42161",
            "type": "eip191"
          },
          {
            "chainId": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
            "type": "ed25519"
          },
          {
            "chainId": "eip155:480",
            "type": "eip191"
          }
        ]
      }
    },
    "lastUpdated": "2026-10-27T18:11:10.154Z",
    "quality": {
      "l30DaysTotalCalls": 12,
      "l30DaysUniquePayers": 8,
      "lastCalledAt": "2026-10-27T18:11:09.69Z"
    },
    "resource": "https://api.marketintelligenceapi.com/api/v1/markets/gas",
    "serviceName": "Market Intelligence API",
    "tags": [
      "gas",
      "gas oracle",
      "fees",
      "evm",
      "transactions"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Gas price and transaction fees per chain ($0.001): base fee, priority fee percentiles and the USD cost of a transfer and a DEX swap on Ethereum, Base, Arbitrum, Optimism, Polygon and other EVM chains. Use before sending a transaction to pick the cheapest chain."
}

What the leaf hashes

{"body":"2f4e5943e69f684751a1e92befef44ef2135781e1f1e006eb4336f358fd4c527","id":547685,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133214584948,"prev":19375,"subject":"x402_bazaar:https://api.marketintelligenceapi.com/api/v1/markets/gas","subject_kind":"source_record"}

Proof

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

1. 0xb0150d9a0afa8de711768c4e8284634dac1e3b6051393495f8f5e56c7305971d
2. 0x24abd4887c8eb77ed49e2721c19e0a46669cc27e25ce2eadaeb0a8813d6c7500
3. 0x078f5a4998221da9d4df645f0a0ebe62547cd20923a99d348f928b8918ea2c83
4. 0x4b5755a4d643facdb0dea92c4625111316eb810da23ff94e78eb45030a7d5aec
5. 0x138da2a1da16a6128be5b5aa2e8b46d187ba5247c29b63dd623bc93a3eb56051
6. 0xfe558b19c84e66c0763958303389384e969a75451430262cdb35fd1b7784b9a8
7. 0xd9c391d7d760c1c671ed97fe31831e8daf30bd7d3ff38deadf31aef38b1fa4f0
8. 0xfec90a5db6e3d99796cfcb4a22497b6c6c1137b3f074fff78443960e251d765a
9. 0x21a4d48f38ca7c0d6cd6401e0c696d9404c0ab6ad6ce1d356c20be74a42c0233
10. 0xd0b754d6a919ae0618fb43b587cf99ce18534aaf6627ab545862bc00e6bb323d
11. 0xb401429c8bd10413f6592bff0d0ca36d15f4057fe715a18ac4410a9b8e3c3342
12. 0x6413c10d59083704c26ae4eedf79ca24dbf9c92cad846aac6f2a11f02ab3b17b
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