Evidence row 77293

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": 8,
      "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":"1974e6f94423c0f4e99e870a63c69d2a3011dbd23e98832658bf42d985d235e8","id":77293,"kind":"listing","method":"baseline/1","observed_us":1793025493773518,"prev":null,"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 2026-10-26 (296695 rows).

1. 0xc01847bc3eec83dbe7ad147a8ce67a69a8e0db788cf2a612e3b4d8e498c45089
2. 0xd6eac4a2df2d192ea70ed81ec77a6113355405ca348be7988f72dbf240a3591e
3. 0xb646fd6a9c563a505121e3ed420410e1060902e977a532d4384c34d05904b191
4. 0x3d0ec0d315cb82c2731a816f279b6d1f9df72825f55dfe8904d57518c492a080
5. 0x03e7e891643db4062fc0c60aec21b6d320e93d60ddc7b6b60a2cdffb624ca956
6. 0x6b09d089896699de68a45c5ade623a185b8cc01523c6b21536cbf63d93cb180b
7. 0xb9b6a19046cb181fad6e12d75dbd4af33b79bacced5c13a07d00f3aaa170dbed
8. 0x2b4d77da8da85d7ab0925c094502a7b4b1908c3e9fff079ceb2342851ea845fb
9. 0xfe358e902a6fa4649454f811da8316224a026c38d6f17c298505d93a63228567
10. 0xb33388c24233bd0f8d79ebb3c3ccad47f73830bca7936d0dea5659e86f4fa250
11. 0x1ee01b339a84463f4b1d9b89cf58bd877e8b7f91bd1aa7bb362bc554f4a1cae7
12. 0xc520305226daa0caf1c2416854f726ec072c950c1903497b2a1e88b0c6f406da
13. 0x96eae331a78c1c9248bc58130ff83d31b884760a51fe7191de2a39105ae7c072
14. 0xdbe2e8dd65ea1248b2936612538f18268abd5cf27ebdab3737694571ad496004
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae