Evidence row 123779

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vendsdk.com/api/v/qr-code"
    ]
  ],
  "name": "vendsdk.com/api/v/qr-code",
  "owner_address": "0xc648116b5debe4af7d78838aa468d07e0a9ab697",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xc648116b5deBE4AF7D78838AA468d07e0A9Ab697",
        "scheme": "exact"
      }
    ],
    "description": "Generate a PNG QR code URL for payment and onboarding payloads (upstream probed live)",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {},
            "queryParams": {
              "data": "https://x402.org",
              "size": "256"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "ok": true,
              "png_url": "https://api.qrserver.com/v1/create-qr-code/?size=256x256&data=https%3A%2F%2Fx402.org",
              "service": "qr-code"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v/qr-code",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "data": {
                      "description": "Payload to encode",
                      "type": "string"
                    },
                    "size": {
                      "description": "Pixel size 128-512",
                      "type": "string"
                    }
                  },
                  "required": [
                    "data"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "ok": {
                      "type": "boolean"
                    },
                    "png_url": {
                      "type": "string"
                    },
                    "service": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-11T09:00:38.553Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-11T09:00:38.342Z"
    },
    "resource": "https://vendsdk.com/api/v/qr-code",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Generate a PNG QR code URL for payment and onboarding payloads (upstream probed live)"
}

What the leaf hashes

{"body":"f814bafd85dd77a0120377fffcc7b2838608dfa1cfcdd3a01c92a07e3f3b37cb","id":123779,"kind":"listing","method":"baseline/1","observed_us":1793025623704506,"prev":null,"subject":"x402_bazaar:https://vendsdk.com/api/v/qr-code","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. 0x993df578e61c6ed37e55664d50a57fb90b1f08315885dbf3505a9d8765e7539e
2. 0xa2173f4f05621dd55ffbec0b4fd96200fe7914c13b93e62db688a837b4f6bbc0
3. 0x615dde54e9cb54b9dbf5f8c94b4b48fd89df46497e6202923a0db73b046b129e
4. 0x94c51620178b8c7e8e8e9e5099f28252c2a67fbf8220b595f86efea21b7e6550
5. 0x44b04c03000be63a9664f03c420df63ef6b3c3dd0a5b58f09c0d252175e47985
6. 0x7f238f1e282beb0c04754c048a7d93d1d07bc1ddc296b3c1b783aec6802bbd5a
7. 0x122a3f58d8d634b20d211cd7a9cff65711eb46824c7612547b7fc3bb8933bbf8
8. 0xf00615505c0adaf31600f9a6a2dfbe5eb4c1c33a69ad3bf4b909d06499a391cf
9. 0xf8ef2b6c2385981df0d65e525be8511d87776483608ec05b763f85d1296badd6
10. 0x2902a29ff231b32ccac2765997f18f1504daedb7f97ee4f0577f4a8edf0e7293
11. 0xd3f19437d703373e99e0bf69c4ca06561426260f599f7d259e3257085a387573
12. 0x6ae9e6ee1b544d831982666bd3570457659e78fc0064894d7ec23f971a37ff2f
13. 0x239fd39716710e7412bd120c373072b4c0d8b11bb9ee431dad62a2ce57b3d6f4
14. 0x49062da782c4f73855ddd5fdd51840749f928b5f17d1ce75ac50f2d829104e72
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae