Evidence row 123767

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vending-machine-seven.vercel.app/api/v/qr-code"
    ]
  ],
  "name": "vending-machine-seven.vercel.app/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": "2026-10-11T17:00:53.351Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-11T17:00:53.228Z"
    },
    "resource": "https://vending-machine-seven.vercel.app/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":"cb5377a8150b3edc48f7587ba6ff43ac395d219260694eb14ecfc51a7160e1c6","id":123767,"kind":"listing","method":"baseline/1","observed_us":1793025623694930,"prev":null,"subject":"x402_bazaar:https://vending-machine-seven.vercel.app/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. 0x8b0e8590c9260705d592f6f4dc7c06c5121a5244b5937ec0385a6f814951580d
2. 0x93b739b5c382649f7548763c2a92f03d1b661e51ed170f3073c3d07f99ebc926
3. 0x838b01ba1a97c38185ab1d9a36880caeb1d69f3cfa28a38e66f101eacf77ef82
4. 0xf1fab17a5370f1fa291da3b5cfbf10d20edde51f334803ea5a01d5d2667fbef2
5. 0xf6b77048c07c1195405f590c7587e9ef18e577c78fffff72c76399e50080ea1d
6. 0xe8e5f294382c2df92c675fb5173ba74c6a7d907cf9864e18d0cec36757575915
7. 0xf1fa22c33caf456f60a138a164b385a3109c7db346983d0048aa4e23885bcbd8
8. 0xbce8faae054a3a31ad1229c17f48f514682089bb115d359546bef6f2a2d5b971
9. 0x0fffe292d9960e31d06d8fce508362f1d4f4450d619eba8241c8efa6d94710d9
10. 0x7d19a8f0d44d0c224dd4e1fd540ac67cd3370e926b73e965b2beb37e5ab9936b
11. 0x7d887da17795602ff54a7a2d145692904e47f8d3ab035b8db85d274d00bc9bfe
12. 0x8cb11bf3bc7d3a6f859c170a167821024ffc4758cdfd2cc96f61a3291aefb637
13. 0xd5ec7ffaecac790d8adfa0620b0a5494758f862e3090b49e556a6ecbad2f0782
14. 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae