Evidence row 751169

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://how.is/v1/url/preflight"
    ]
  ],
  "name": "how.is",
  "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": "Check whether a URL is safe to fetch, read, sign in to or pay before you do: domain age, look-alike, blocklists, HTTPS, robots.txt for your agent and the site's own x402 price.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://github.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "_shape": "data: verdict (likely_safe/caution/high_risk/inconclusive), risk_score, safe_to{fetch,read,sign_in,pay} each yes/caution/no/unknown, actions{...: {answer, why}}, reasons[{risk, why}], domain_age_days, newborn, lookalike, https_valid, robots{allowed, token, status}, http{status, content_type, redirects}, x402{offers[{price_usd, network, pay_to}]}, bot_policy, not_checked[]."
              },
              "receipt": {
                "charge_usd": 0.005,
                "rail": "x402",
                "settlement_tx": "0x…",
                "tool": "preflight"
              },
              "result": "URL pre-flight 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": {
                    "ua": {
                      "description": "The user agent you will fetch with; robots.txt and our bot policy are judged for it. Defaults to the User-Agent of this request.",
                      "maxLength": 512,
                      "type": "string"
                    },
                    "url": {
                      "description": "The http(s) URL you are about to fetch",
                      "format": "uri",
                      "maxLength": 2000,
                      "type": "string"
                    }
                  },
                  "required": [
                    "url"
                  ],
                  "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": "2026-10-27T21:37:07.635Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T21:37:07.408Z"
    },
    "resource": "https://how.is/v1/url/preflight",
    "serviceName": "how.is",
    "tags": [
      "url-safety",
      "fetch",
      "robots-txt",
      "phishing",
      "security"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check whether a URL is safe to fetch, read, sign in to or pay before you do: domain age, look-alike, blocklists, HTTPS, robots.txt for your agent and the site's own x402 price."
}

What the leaf hashes

{"body":"b0693b5c93c924341afeae61a0ae3dfdc2879507f5429876bc293ed94ce89d70","id":751169,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178705153269,"prev":563444,"subject":"x402_bazaar:https://how.is/v1/url/preflight","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. 0xb82d50b26a0581cfc5c8b364d2b10a95b59efa23881be49ef1db0786024df816
2. 0x9aef8eff111a48ac1a683fb42ef7ffc215208f231924c77171661d616cd1e63d
3. 0xaef40b04821e90c4e924ef844016c3c2adf4601819cacae9363bbd3c162e8552
4. 0xcf0a7e8240a7d9e456c64528e6937bf94cbe108ade388f4d7efe571861c016d1
5. 0xdf1fba316e735953a16863e65640e78f766fd45447778f5d0b487c3ba22a5fcd
6. 0x27727683867fe576be943a3703f72650f30af37de614905e9fe24d66aa059bd7
7. 0xb89c231534df2cb6ee7eb215d3f4cef7b38a33eac07bb44dc9a4bada5f713513
8. 0x461128cf0b68e2d0cd4e71c3bd9762c0f3ad306bc68165e3f5588fea56fb1f38
9. 0x139a4e5083b2acdb6f4da3e625f31322ca0f553c6cf243acf9c2e10de554c8b3
10. 0x98f244c3f98c16b2e2573318ce38509b4a76e431850c9480ff16bc04c9ce35c2
11. 0x1099cb30e4ee3ea00ea8d6df6558c3c83c4ad830eef8348899747a99114cdf5e
12. 0x4b5addc8bd51420ef27a321399f10fef2cc3fdc2a0326948b037697471b33b73
13. 0xcebf4a9e3aed292aba36cf13d3dabb64469130bf5de7b7c925c232cb853aebd9
14. 0xbff5cb8c10a36d79ad312f3729888eb704e81907920e704f80c8e5b670139050
15. 0xc21e7661f5d6220994a88cc71b1262eeee3b912a2d383d18f38a631c534bfd71
16. 0x32beeeb960280bc48748681cb10297ede9403461fe9c8143fdf946548e552926
17. 0xe08e8bd91858a8a10c46ecde9c29a6288b960987303173c5e882afb46ce91fa0
18. 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae