Evidence row 751979

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://how.is/v1/domain/email-auth"
    ]
  ],
  "name": "how.is/v1/domain/email-auth",
  "owner_address": "0xa76a0e93c5af3fd43521300b0a58ef5f70fc44f6",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xa76a0E93C5af3fd43521300B0a58eF5F70fC44F6",
        "scheme": "exact"
      }
    ],
    "description": "SPF, DKIM and DMARC records and posture for a domain.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "domain": "github.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "_shape": "data.data: spf, dkim, dmarc, mx, overallScore, overallStatus, recommendations."
              },
              "receipt": {
                "charge_usd": 0.005,
                "rail": "x402",
                "settlement_tx": "0x…",
                "tool": "email-auth"
              },
              "result": "Email authentication for the requested subject"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "domain": {
                      "description": "A bare domain name, e.g. example.com",
                      "maxLength": 253,
                      "type": "string"
                    }
                  },
                  "required": [
                    "domain"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST",
                    "PUT",
                    "PATCH"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-27T19:58:50.765Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T19:58:50.43Z"
    },
    "resource": "https://how.is/v1/domain/email-auth",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "SPF, DKIM and DMARC records and posture for a domain."
}

What the leaf hashes

{"body":"51469622080eddb5d30608cb6f59e5bffab16bb9864e2ef960ba48cf5457e17b","id":751979,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178798539253,"prev":555640,"subject":"x402_bazaar:https://how.is/v1/domain/email-auth","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0xdca3a757666e30f1e2815409aa311092f56c1b0a148826358d39535a327c3084
2. 0x853e3287704a1c54f0663463f7f0065d83525475ab731fedbe0a4799ab2b5704
3. 0x253ebf365d8cddb1896bd63b12caedb3bd99ab01162a4f794f74b9eb936423f1
4. 0x76d14a8856b815e4c67c8f63a3949ef5313770abae0ac8b9e3184d1451f62c94
5. 0x75ef49ffd236e9f94b17e97db52ecf7bd638ad30e8ddf33369eac7d54643d4e9
6. 0x5354ecb06a1010da8b2214f0da34dd91e51211fbbdda1f2215669df73297436a
7. 0xae1f57241ebd450a1a329c2e73fc68ea9d5a47f5af17cfb1c7aba5b39674e9aa
8. 0xa33b2958aa0f0edc8d61b5fe95d6fd7c8bf756ddc3dd1677afc67fa2d3355670
9. 0xbb8c53bae8917e7314d88fc60caaafff2dcf96c3d0b12a76f1db2851a8c9467b
10. 0x25202e4df8a1e9f1373ba08149c2153af88e44ac994e4131c41fb2a4f0a06892
11. 0x71fdfe1f04396febea4a1fe934f8b3ee1cfebd533eb0d739f9ce7493561eb3d7
12. 0xd9780e5731cbd1937161b610d28ec8ca9bc3bd967d3ebb457c3fdbd175516124
13. 0x82ed78906403b92178e04c4dd2d8720cd186be1cf80227fb38b0ce1778f2e146
14. 0x4c91c1a674a62931ce621a521121f13a2bd017a2cbd5ae2510623cd559d36663
15. 0x334629b51e7dfb2339fa4fd14202e288d70dbaccb3e5b04d2d5fb8f0d489ce5e
16. 0xef2ebd45f2cfd41dc3eb213cc4cc144c46b7e9ead2de0b9f627463bad16e3ec8
17. 0x67e9ff3e48c515135fcf3df2675aa4996d35d4a328ce41588ee1a7d93347c823
18. 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae