Evidence row 751170

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://how.is/v1/read"
    ]
  ],
  "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": "Read a web page as clean markdown, with a safety verdict attached: robots.txt honored for your agent, risky sites flagged as untrusted, optional screenshot.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "url": "https://github.com"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "_shape": "data: markdown, title, description, lang, canonical, final_url, http_status, content_type, words, truncated, untrusted_content, preflight{verdict, safe_to, reasons, ...}, screenshot{image_base64, ...} when asked."
              },
              "receipt": {
                "charge_usd": 0.005,
                "rail": "x402",
                "settlement_tx": "0x…",
                "tool": "read"
              },
              "result": "Read a page (with verdict) 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": {
                    "screenshot": {
                      "description": "Also return a 1280x800 JPEG of the page",
                      "type": "boolean"
                    },
                    "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) page to read",
                      "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": "2026-10-27T21:36:57.643Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T21:37:02.085Z"
    },
    "resource": "https://how.is/v1/read",
    "serviceName": "how.is",
    "tags": [
      "markdown",
      "web-scraping",
      "fetch",
      "url-safety",
      "content-extraction"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Read a web page as clean markdown, with a safety verdict attached: robots.txt honored for your agent, risky sites flagged as untrusted, optional screenshot."
}

What the leaf hashes

{"body":"b9d818c10f1e8a1cae8893755c5e2fb63d3e99bee75cb82709e49044f60fc28c","id":751170,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178705155686,"prev":563445,"subject":"x402_bazaar:https://how.is/v1/read","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. 0x47210aa084b4ff3fde8e34c1424a787be8a233e8ab37a7cae5c875f5189219b6
2. 0x2acf42e9c9a95c9f19c9541660e81e2ad7bb62af7a2a8da81a76004404762f10
3. 0x129bb06fa4314e5f3d09cd3f8ea40b23d9913895119be14709f42d506b143f02
4. 0x38f4830d6c44bf12140802ce26b4fb86afda15792cb78e5464af93f3c291c313
5. 0x4e6b85661d78150d0bd74591da3790a0aebb27dcdd7da4baa82c4321916a2ca5
6. 0xf85ab0efa50f2a62b2983bc8fecacd5f1c9ce3a88f999148d209ad3e00db6047
7. 0x4c1b9b6ccfe57765772293d2a3583f7750195877068d67f0164dbdf2af59faf5
8. 0x42a49c4f1cb401aa1de3bc902cf7b292e9be4f616c174bef7a594fb78d328ef2
9. 0x1e14e8ef86c3273bd7ca89b501493522598acc9a45799259f88d45f676bdcc51
10. 0x65b786e2b10e0ca0841e2c51d48c29106f3214fa80eb03979b135f9b9ca9c67d
11. 0x36f6649ff23eb55ec5a8c1e0107ec9b5e011bfb3555af8bd4df73b6de7bae071
12. 0x5f67b3565db57faf07222a10e76878bb9a3ff1018ee527ee52e480086593829f
13. 0x61139ad7d606f7313043f7df1dce650b88fec9b3f4115099388cfb12e3b2c33d
14. 0xb8468b110fdd4b1ba83cf25249a313b6361839956c4e0f61b3f3edfce5fe58d8
15. 0x91690f98682e078d41b8b72edeaea70473545a876fc3baa645fc988225096386
16. 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae