Evidence row 563454

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://how.is/v1/domain/changes"
    ]
  ],
  "name": "how.is",
  "owner_address": "0xa76a0e93c5af3fd43521300b0a58ef5f70fc44f6",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xa76a0E93C5af3fd43521300B0a58eF5F70fC44F6",
        "scheme": "exact"
      }
    ],
    "description": "Check when a domain appeared in the registry zone file, left it, came back or changed nameservers, from daily gTLD and .com/.net zone files. A sudden nameserver move signals a hijack or sale; a brand-new name signals phishing.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "domain": "github.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "_shape": "data: in_zone_now, first_seen, first_seen_is_coverage_start, last_seen, current_ns, events[{type: appeared|disappeared|reappeared|ns_changed, dates, from, to, message}], changed_last_30_days, coverage{daily_since, first_zone_file, runs}, ns_runs, note."
              },
              "receipt": {
                "charge_usd": 0.01,
                "rail": "x402",
                "settlement_tx": "0x…",
                "tool": "changes"
              },
              "result": "Domain change history 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 registered name directly under a TLD, e.g. example.com (zone files list no subdomains; ccTLDs publish none)",
                      "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"
        }
      }
    },
    "iconUrl": "https://res.cloudinary.com/bdb-prod/image/upload/c_fill,ar_1:1,w_256,h_256,f_auto,q_auto/v1793136692/bazaar-icons/33e0d64a881c43a7.png",
    "lastUpdated": "2026-10-27T21:31:55.242Z",
    "quality": {
      "lastCalledAt": "2026-10-27T21:31:55.242Z"
    },
    "resource": "https://how.is/v1/domain/changes",
    "serviceName": "how.is",
    "tags": [
      "domain-history",
      "nameservers",
      "zone-files",
      "phishing",
      "security"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check when a domain appeared in the registry zone file, left it, came back or changed nameservers, from daily gTLD and .com/.net zone files. A sudden nameserver move signals a hijack or sale; a brand-new name signals phishing."
}

What the leaf hashes

{"body":"771db06e0c43b1cb064cbec408b08100bfca5364b1e00d29fadd20f20fdf7c22","id":563454,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793137725246552,"prev":null,"subject":"x402_bazaar:https://how.is/v1/domain/changes","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xc3e18b06dbeecd6531c66385c18d4a51ff796069d0c84f811e22d6899b91c09f
2. 0x3d2eae51e277c8145a3db434bd23495465d0f7195e05c77e31fad60572484926
3. 0x6896e154822364345526c718f97f5372dc341cf5b403f0f8ea9c6ecc0a1aab58
4. 0x77e2bdc2611af35a7e72faacb0b0ad6dc156010b8dc71f70e240e436dc2c391a
5. 0x23778b648c54b54a02deb4f7cc4130766ac1af9bbc0fb9dc4fb6818a49b39d6c
6. 0x57aebc0c89ea972cf731f81705ed41df8befc2fec210115058ceb4cf50c1ccd8
7. 0xf5489461d550b88acd8db93585b9ce13db623be5148ce0d38e1423b5937f197a
8. 0xe914ee977e79088f5240bc9939aa31422d54ac6f99d76ca691dee8c7ef0a03d9
9. 0x95710a0ffd80a8afab006f853098e71ee0fe94357d164fd5bf3c6c5f48019811
10. 0xc9e21bdb5c28057e32655df6868cdd0379fa1da84b652c863ac4825f05a56ca9
11. 0x1508fd39a92015f2675aefede1d322b337358ef9cb1fdde46c7fa9276f6b3d5f
12. 0x09c148bbe62d15164b3840b798915bcd800d49ae022a1820cd04cc89b1b4e59a
13. 0xb48b088603004f0a5232faea4acd65999cbb4832f4c15b0098e853144cb91655
14. 0x077edf0f29e2a3aa19c876439830696b88f0236fd0b2a3c43c76f38cdd29bb2b
15. 0x73341bb09dd901ca47f26173883431496e3d98d6b0fb5b89f36218126d46c5d4
16. 0xa94627de1af0e823832e05a9069b304ecccb8c0cdb8f9cfc4f2039bfb9799dc5
17. 0xdf1105afdc109de3c09a98fc8a3864159ad964e6f49b635c105a27a1e1f14310
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4