Evidence row 751975

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://how.is/v1/check/site"
    ]
  ],
  "name": "how.is/v1/check/site",
  "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": "Live check of one or more URLs: HTTP status, latency, DNS resolve time, resolved IP, TTL, nameservers, TLS days remaining.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "sites": [
                "https://github.com"
              ]
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "_shape": "data keyed by URL; each entry has ok, code, ms, dns_ms, ip, ttl, ns, cert_days, server, ts."
              },
              "receipt": {
                "charge_usd": 0.005,
                "rail": "x402",
                "settlement_tx": "0x…",
                "tool": "site_status"
              },
              "result": "Site status 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": {
                    "sites": {
                      "description": "Up to 10 http(s):// URLs",
                      "items": {
                        "format": "uri",
                        "type": "string"
                      },
                      "maxItems": 10,
                      "type": "array"
                    }
                  },
                  "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"
        }
      }
    },
    "lastUpdated": "2026-10-27T19:59:09Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-27T19:59:08.787Z"
    },
    "resource": "https://how.is/v1/check/site",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live check of one or more URLs: HTTP status, latency, DNS resolve time, resolved IP, TTL, nameservers, TLS days remaining."
}

What the leaf hashes

{"body":"2a5e3b51b9e50c3338ca642dcef49ebd484982c7f0ea244ce21601b41485af3c","id":751975,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793178798529033,"prev":555636,"subject":"x402_bazaar:https://how.is/v1/check/site","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. 0x19e78412af23a50bb721530a5a638bea6128e6ff795a04f686a4cc24c44f0514
2. 0x7502e5d989fc78123842f22665a4c297d2b8d4f1bc39e5aff352c3833c43b94f
3. 0x00903f215d9121b27f70df39527c51fb153883a568f50efbca26a3826133bf05
4. 0x322a741068e9a2698e2bb284740b3b70d2455541684a9127d09d4d7852991803
5. 0x6c80f25f911283ab30235054c7ea809a12075e130fffba395bdb654ade3c16cf
6. 0x2656eebdb6317879a7ca39ac3699f9250faf693cbec4c8f2e021a78d78cc38c4
7. 0xc3a3d1360605b486a801d79cc7a0ef0477c7607487c1a402bfbd6e8f8df28aaa
8. 0x12f3b502d5f35621d8669b63e1e7db90fd851c580f6e66d049d162f0d35463f7
9. 0x1f50455c677325ea939775facc7379772339273fef2f0018b6ec8768b1256c35
10. 0xfc3b39079adea5bc6d32c7f2dcec87bb15f178df916ee1be461e294822f64320
11. 0xb30f2fc3ee4aaf4d2cd2157f272a0d2363bb6f756652e382287d7bdbe8b9bd1d
12. 0x4973931525328629607c7923dc358b07d4610b2340248ebd3f3fc158c6a056aa
13. 0xc2a06f976a80758d370e062c6f956943e28355b887490c4b90873d317e990ba9
14. 0xdf8e9d4c523b87b2bea3cc4d461fe94e163080e98a261c596a4641e3fcaf7cc4
15. 0x4698ebc7cbcb2286f661b867355eb6a9183e884482ee16965889e886b17d19ac
16. 0x35e8995c30094446ec790423171382fccb377081b921295b0ae3840cc2c4f52c
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae