Evidence row 555251

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mailcheck.hugen.tokyo/mailcheck/validate"
    ]
  ],
  "name": "mailcheck.hugen.tokyo/mailcheck/validate",
  "owner_address": "0x29322ea7ecb34aa6164cb2ddeb9ce650902e4f60",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x29322Ea7EcB34aA6164cb2ddeB9CE650902E4f60",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "4du4AfkjJEwch2zk3shkPJVZfyJHNDnNjEWC6AboaS5Z",
        "scheme": "exact"
      }
    ],
    "description": "6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana",
    "extensions": {
      "bazaar": {
        "category": "email-validation",
        "discoverable": true,
        "info": {
          "input": {
            "bodyType": "json",
            "example": {
              "email": "user@gmail.com"
            },
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "checks_performed": [
                "syntax",
                "mx",
                "disposable",
                "free",
                "role",
                "typo"
              ],
              "did_you_mean": null,
              "domain": "gmail.com",
              "email": "user@gmail.com",
              "is_disposable": false,
              "is_free": true,
              "is_role_based": false,
              "mx_found": true,
              "mx_records": [
                "gmail-smtp-in.l.google.com"
              ],
              "score": 0.95,
              "status": "valid",
              "syntax_valid": true
            },
            "type": "json"
          }
        },
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "tags": [
          "email",
          "mx",
          "disposable"
        ]
      }
    },
    "lastUpdated": "2026-10-18T13:09:06.499Z",
    "quality": {
      "l30DaysTotalCalls": 7,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-18T13:09:05.819Z"
    },
    "resource": "https://mailcheck.hugen.tokyo/mailcheck/validate",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "6 email validation checks in one call — syntax (RFC 5322), MX record verification, disposable detection (5,000+ domains), free provider identification, role-based address detection (admin@, info@), and typo suggestion. Returns a 0-1 confidence score with detailed per-check results. POST method protects email addresses from access logs. No API keys, no multiple service integrations needed. Accepts USDC payments on Base and Solana"
}

What the leaf hashes

{"body":"4c7c6312fc6e9767109481ba68126597ad63fa42ba9a6bf026d88b05e3916dcc","id":555251,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793133783533229,"prev":77293,"subject":"x402_bazaar:https://mailcheck.hugen.tokyo/mailcheck/validate","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. 0x98019fcd3b00b094fd0a71c5444938cb34b2e3756e2933c42f3ab54ac071fb5e
2. 0x064f0b8f5f9196a11b06869928c6cbfee764fca41f80959dec813931ef698d9d
3. 0x5d04eed1e4a2a764fb2ea4e778778709d1da655b8da3d610eb4f438f4b241498
4. 0x91f535e5786afe718bbe12714507230b50e966965ab391bef27afb282c5a43db
5. 0x3acd7d5b2dcf1865e4b3e30a66aa5a67e02498783c604ef79efdda13ba11a877
6. 0x5f6cb8ad336d92841ed5ed45a0404bdd7aa307bd9218ad0e02408e3802b874eb
7. 0x04b4ca52a8aa9115e649746feb6dd6855b1dcf0d06ca68d7382a732b6c118327
8. 0x6ac6ed86d43a22b3ef77b345ea142c265ff2b06b85b4f1567bb418452e2ba2de
9. 0xe5be3a21824f275e32299e4311f73c2c279dcdc8dfb099979279d9acf71d7c3e
10. 0x1c722c9044e8e0376a8ec2ea9b9afc5d86689ca0ab56008144c16e747fb78efb
11. 0xa5c23f377d8ff4ee53b580cb756ab2bc047f39357bdac89f30099775b7b2ef70
12. 0x265cee5401cfadc89cfe40c27cc910090736b6a94b8d688bb7729f0791087d26
13. 0xfe6d2e9a468b7e99de9162a2ef30ac0b0e3b318387b4356bf524493aa67b295b
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4