Evidence row 64191

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.probekit.dev/v1/mail/ptr"
    ]
  ],
  "name": "ProbeKit",
  "owner_address": "0x5be2be9f95549a2d69951d24a2b3901d1df1bc05",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x5bE2bE9f95549A2D69951d24A2B3901D1df1Bc05",
        "scheme": "exact"
      }
    ],
    "description": "Check reverse DNS for a domain's mail servers: up to five MX hosts, their IPv4 and IPv6 addresses, each PTR name and whether it resolves back to the same address (FCrDNS), with coded findings. Use when an agent must tell whether a domain's mail servers have matching reverse DNS, a common reason for rejected or spam-filed mail.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "domain": "example.com"
            },
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "domain": {
                      "examples": [
                        "example.com"
                      ],
                      "maxLength": 1024,
                      "minLength": 1,
                      "title": "Domain",
                      "type": "string"
                    }
                  },
                  "required": [
                    "domain"
                  ],
                  "title": "DomainInput",
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T01:24:17.28Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-26T01:24:16.669Z"
    },
    "resource": "https://api.probekit.dev/v1/mail/ptr",
    "serviceName": "ProbeKit",
    "tags": [
      "email",
      "dns",
      "deliverability",
      "ptr",
      "reverse-dns"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check reverse DNS for a domain's mail servers: up to five MX hosts, their IPv4 and IPv6 addresses, each PTR name and whether it resolves back to the same address (FCrDNS), with coded findings. Use when an agent must tell whether a domain's mail servers have matching reverse DNS, a common reason for rejected or spam-filed mail."
}

What the leaf hashes

{"body":"c5181f9948376952c4cb9d91bac43c692d2a9536adb45c0a28c4ddff3c7c60c8","id":64191,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025456234168,"prev":null,"subject":"x402_bazaar:https://api.probekit.dev/v1/mail/ptr","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. 0x3b487bf3e6395ab5db19fc3a7317ae2ea7ec9237e16a4c48e66be25533ac279d
2. 0xb6550cd2aae18139fe47c247d52685b67559a81b21a1fb3b28d95bc414e06a1b
3. 0x8cd01e1e23d6a1924b672def8b31a9e19386bb5f886880a12097062e021504fb
4. 0x564d164ebe9b5afd7c782395b7a704fe35d1e65ca288422bc15e5662019ff7fe
5. 0x217ad2371eddacef619386c875661ea0d73a398258f59c065dcf48ee6d132a37
6. 0x46725ab69027d4cd6b3025b03221925ad6fbb2aa953a822e326718de4a698a17
7. 0x70e67079f4f154efe45e2eabc76936ccc34681d9511c21b8b8faa7bd1ee4f0e4
8. 0xfcf98b311ea07eb498932755a4ee44e84cc55c674cc08005b5eda718ff1a92b0
9. 0x53ec4f7db6626141875a0d6a972bc6e34b0d6650dda3374d7f6fa68549cc9978
10. 0x0c9588d83dbdbfe86d2f03c80aaae11aaa963d8c04ce31ca8923453d940310f4
11. 0x229584c1d304842544db84ca7b368b5ececeb9d3bea2b23265eba1c7595d1220
12. 0xdb4b9388e3fe1df4b04e149e559f925fb354066ae1d2537fd6f918162716fadf
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae