Evidence row 77292

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mailcheck.hugen.tokyo/mailcheck/mx"
    ]
  ],
  "name": "mailcheck.hugen.tokyo/mailcheck/mx",
  "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": "MX record lookup for any domain — returns whether mail servers exist and their hostnames sorted by priority. Verify email deliverability before sending. Supports all TLDs including ccTLDs and new gTLDs. No DNS library setup needed. Accepts USDC payments on Base and Solana",
    "extensions": {
      "bazaar": {
        "category": "email-validation",
        "discoverable": true,
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "domain": "gmail.com"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "domain": "gmail.com",
              "mx_found": true,
              "mx_records": [
                "gmail-smtp-in.l.google.com",
                "alt1.gmail-smtp-in.l.google.com"
              ]
            },
            "type": "json"
          }
        },
        "schema": {
          "properties": {
            "input": {
              "required": [
                "method"
              ]
            }
          }
        },
        "tags": [
          "email",
          "mx",
          "disposable"
        ]
      }
    },
    "lastUpdated": "2026-10-08T05:40:45.978Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T05:40:45.292Z"
    },
    "resource": "https://mailcheck.hugen.tokyo/mailcheck/mx",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "MX record lookup for any domain — returns whether mail servers exist and their hostnames sorted by priority. Verify email deliverability before sending. Supports all TLDs including ccTLDs and new gTLDs. No DNS library setup needed. Accepts USDC payments on Base and Solana"
}

What the leaf hashes

{"body":"17c9f9eead623e33205b460d6fb8278de6fcede2cf090a69c44bd12369c10e9d","id":77292,"kind":"listing","method":"baseline/1","observed_us":1793025493772561,"prev":null,"subject":"x402_bazaar:https://mailcheck.hugen.tokyo/mailcheck/mx","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. 0x7b00d7e703fb89e77b0e4af870920aa456d3e8a985146b06c543990469accc7b
2. 0xfcf365ad6df8b4f58edeb00f1c6a28af29a2ade517832aaad91ae26fec2f0487
3. 0xcef7b59680293525fe71d08a87098b8ae615c0ee48583d9703a5152549d7e660
4. 0xa941b93b66df7d385112c8bc132461807200eacc2289f21bec1a384eb0d59a49
5. 0xc423db58e38654808a9dff5a590f7f35be48353b507c1e8e3bd8be05b596bce2
6. 0x164d510cce3ba9af344ce1a1d36050b6c1d65382c3366c666bf28bd6a279d75c
7. 0x196562712db301f63fb87fd49121d78ad565155c0a4143a91cb6852fd27d9b49
8. 0x128fefa7179eb6b68574aebac765389ee4388b39c197ac15accaa08779300ac1
9. 0x8538b668ed58b72cabc6b99d60f85a3ea2176e1d3ec947794899400b5f19d061
10. 0x227b1846e9338d14a584d945977a59dd6a05f2e84a33212202400515ac9c0632
11. 0xe7152aaccc7d7d5da2d13bc6ee8ec470b8c1a5abe7dfed1431f0ed53ec50ebc5
12. 0xa6406b1a5540d26e0cbd03bb274a01c10968fadb17913a6043bb9427ddfb71ba
13. 0x01c95624b1f2385ef774ee258a9ae58a4df07a1bdaa829de84e1d5201f3f39c2
14. 0x7721d38652b6444b18e1193824e50490ade04851ce6221771f6e374c4527d80f
15. 0x15039087bf60ae9b06b756ec3cbc299760e59923a438bbd91e34d105186db0ed
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae