Evidence row 126166

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402.freeq.one/market/bazaar/tools/verify_stablecoin"
    ]
  ],
  "name": "x402-gateway",
  "owner_address": "0x90b0dc893406d6ea63bb077ed59f5e8340f98d84",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 60,
        "network": "eip155:8453",
        "payTo": "0x90b0dC893406d6eA63bb077ED59F5e8340f98d84",
        "scheme": "exact"
      }
    ],
    "description": "x402-gateway tool: verify_stablecoin (market: bazaar)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "address": "address",
              "chain": "chain",
              "preview": true,
              "symbol": "symbol",
              "tx_hash": "tx_hash"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "content": [],
              "isError": false,
              "structuredContent": {}
            },
            "type": "json"
          }
        },
        "resource": "https://x402.freeq.one/market/bazaar/tools/verify_stablecoin",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "description": "JSON request body. See GET /tools for the parameter catalog.",
                  "properties": {
                    "address": {
                      "description": "Token contract address (0x + 40 hex). e.g. 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USDC on Base)",
                      "type": "string"
                    },
                    "chain": {
                      "description": "Chain for address lookup: base (default), ethereum, arbitrum, optimism, polygon",
                      "type": "string"
                    },
                    "preview": {
                      "description": "true = free registry-only check: input validation + issuer identity, no on-chain calls, no attestation payload. No payment required.",
                      "type": "boolean"
                    },
                    "symbol": {
                      "description": "Known symbol: USDC, USDT, PYUSD, USDS, FDUSD, USDe (alternative to address)",
                      "type": "string"
                    },
                    "tx_hash": {
                      "description": "Transaction hash — resolves the token contract from the tx's ERC-20 Transfer log",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "description": {
                  "type": "string"
                },
                "headers": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "type": "object"
                },
                "mcpServerUrl": {
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": {
                    "type": "string"
                  },
                  "type": "object"
                },
                "toolName": {
                  "type": "string"
                },
                "transport": {
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "content": {
                      "type": "array"
                    },
                    "isError": {
                      "type": "boolean"
                    },
                    "structuredContent": {
                      "type": "object"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "json",
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-25T19:55:14.717Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-25T19:55:14.508Z"
    },
    "resource": "https://x402.freeq.one/market/bazaar/tools/verify_stablecoin",
    "serviceName": "x402-gateway",
    "tags": [
      "mcp",
      "pay-per-call",
      "verify_stablecoin",
      "bazaar"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "x402-gateway tool: verify_stablecoin (market: bazaar)"
}

What the leaf hashes

{"body":"c45109468b96f287088731d81a935428f1ee9bafc5fe497accb893553c550bcb","id":126166,"kind":"listing","method":"baseline/1","observed_us":1793025627314104,"prev":null,"subject":"x402_bazaar:https://x402.freeq.one/market/bazaar/tools/verify_stablecoin","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. 0x242196a38dac8c21a8c1c58a58446e9688d4057778fc329b288a955e384e39e8
2. 0x38bd9c8900206b25b1fea34653018e4050e92a0fe9f268c0146696bc50a1c5d7
3. 0xb51894fd05ecc6f973dd2a17bae802e9dda894ecdf95e46b11106c7a3e58fccd
4. 0xfe7c0c18ef6069d1347ce42c9176d80015de3dddd998a79caee2567b6055117b
5. 0x4fb4632c5bda68b21322c05844386c1fb2416d2c61f676bd5f1ea73845240879
6. 0x1d6478c3390642f60d8270d0a5e4d4a60e800b72d27e037403bb29c38b05fbf3
7. 0x5bf8d219b3204d9f2fe0fd006f6f0b9d18fb4fe3c08ebdca43b7e634723e5fa5
8. 0x978958531254a4298420ec55c84a3366d31c07f117caa7fec6c225211ec5562f
9. 0x3bfb38f380d8dbf47928cadc45d6bd11b5134668387e8c5f016472eb81ece3f9
10. 0x2a32852d08f3dbad9d322dd91bc905c97a70f059d4f616e591b3fe5721ef2000
11. 0x395ecef2713b13f9a2a88fe836fbc1a4e94906043e3938cd3fd16627be6b95de
12. 0x2ceb9cc3a43f479e6ab73db5d3d474a93995fb4188ee45f71846b4cf537a0016
13. 0x830b2c874449c7499489eba2baa67d49f991298225763c0161b471621038d0fb
14. 0xd843afcced75dedd39194ff9bd12326b88099e6112686db2299392d022dc3146
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae