Evidence row 67899

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.oldcolonyweb.com/v1/domain/mail-posture"
    ]
  ],
  "name": "Old Colony Web Agent Services",
  "owner_address": "0x1403ddf1151e0dd4fa68b06cc9cbf7d55cbe2062",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x1403ddf1151E0DD4Fa68B06CC9cbf7D55cBe2062",
        "scheme": "exact"
      }
    ],
    "description": "For $0.003 per domain: bounded public DNS MX, SPF and DMARC observations; explicit unknowns and source names. No mailbox, deliverability, spoofing-prevention or security-certification guarantee.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "domain": "example.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "dmarc": {
                "policy": "reject",
                "query": "_dmarc.example.com",
                "record": "v=DMARC1; p=reject",
                "source": "dns_txt",
                "state": "present"
              },
              "domain": "example.com",
              "mx": {
                "query": "example.com",
                "records": [
                  {
                    "exchange": "mx.example.com",
                    "priority": 10
                  }
                ],
                "source": "dns_mx",
                "state": "present"
              },
              "observed_at": "2026-10-14T00:00:00.000Z",
              "spf": {
                "query": "example.com",
                "record": "v=spf1 -all",
                "source": "dns_txt",
                "state": "present"
              },
              "status": "complete"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "domain": {
                      "description": "DNS hostname domain; not an email or URL",
                      "maxLength": 254,
                      "minLength": 1,
                      "type": "string"
                    }
                  },
                  "required": [
                    "domain"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "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": "2026-10-15T14:13:58.481Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-15T14:13:58.124Z"
    },
    "resource": "https://api.oldcolonyweb.com/v1/domain/mail-posture",
    "serviceName": "Old Colony Web Agent Services",
    "tags": [
      "domain mail posture",
      "MX records",
      "SPF record",
      "DMARC policy",
      "email DNS"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "For $0.003 per domain: bounded public DNS MX, SPF and DMARC observations; explicit unknowns and source names. No mailbox, deliverability, spoofing-prevention or security-certification guarantee."
}

What the leaf hashes

{"body":"429d77c0feb97679a9c04eed0ffc981486f475cc9ab1bb6446895659bd2d3ee0","id":67899,"kind":"listing","method":"baseline/1","observed_us":1793025464914899,"prev":null,"subject":"x402_bazaar:https://api.oldcolonyweb.com/v1/domain/mail-posture","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. 0x1051fdefbc75a9dadcf8e7ad61ebd6310a398fc1f5b338e6a3164b95090e9bc0
2. 0xe392968c101bd6e1b9c69558726c0380ef22c56064e89ae0249ad910c5a69f47
3. 0xccb9cb54207b1c2cc817fac85194b352baaac1b33133c3c2c3a0b6444270b373
4. 0xdad56b04f3bc5aed2c45d6e4745050129e561bba276711f938602d3687af19fe
5. 0x3e8b2b51094c329766ea602977d1a110945620d767fa2fae4e40e535e96740be
6. 0xd68cee348b0fcc073c9221cf98edcd14b75e266aec9591b5f657d5352b3326b3
7. 0xdc3a17df0f5f11ecf9dd1855545d0adf4b119b8dd5558978b5b52e181d73d715
8. 0x36bf52c7eeed10c4089d0d8ea33d21517cae2d51f436728542985e35f701e3f7
9. 0x465aab69fd4c4072371aa999c287e1b1b1240a9c41ac41a8dfae61dd8a81e0fd
10. 0x966bf10795d50c9f81eb3c272b7279beecfe723480c50bbb3c87bcd23b5cd5b5
11. 0x27ff2940d5376ec3cc70015c126b688bae838938b2846686279ceb190eb69456
12. 0xc02d9eff6ef94d46d90d54320548f18fc3f05787047265548577569253c19969
13. 0x294f7935f78a896b5f246a7c9a7ee1b023720acdb03fff3cd549c63479848ec9
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae