Evidence row 118937

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://qr-api-production-1836.up.railway.app/generate/basic"
    ]
  ],
  "name": "qr-api-production-1836.up.railway.app/generate/basic",
  "owner_address": "0xffc458db291b4abce020fe3de4f91f2770e537b1",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1",
        "scheme": "exact"
      }
    ],
    "description": "Generate a QR code PNG (returned base64-encoded in JSON) for any text or URL using default black-on-white styling.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "data": "https://payapi.market"
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "back_color": "#ffffff",
              "border": 4,
              "box_size": 10,
              "data": "https://payapi.market",
              "error_correction": "M",
              "fill_color": "#000000",
              "format": "png",
              "height": 330,
              "image_base64": "iVBORw0KGgoAAAANSUhEUgAAASIAAAEiCAYAAABdvt+2AAAABmJLR0QA/wD/AP+gvaeTAAAF...",
              "modules": 25,
              "size_bytes": 512,
              "version": 2,
              "width": 330
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "data": {
                      "description": "Text or URL to encode, up to 4296 characters.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "data"
                  ],
                  "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": {
                  "properties": {
                    "back_color": {
                      "description": "Background colour as normalised #rrggbb hex.",
                      "type": "string"
                    },
                    "border": {
                      "description": "Quiet-zone border width in modules.",
                      "type": "integer"
                    },
                    "box_size": {
                      "description": "Pixels per QR module.",
                      "type": "integer"
                    },
                    "data": {
                      "description": "The text or URL encoded into the QR code.",
                      "type": "string"
                    },
                    "error_correction": {
                      "description": "Error-correction level used: L, M, Q, or H.",
                      "type": "string"
                    },
                    "fill_color": {
                      "description": "Foreground colour as normalised #rrggbb hex.",
                      "type": "string"
                    },
                    "format": {
                      "description": "Image format of the returned bytes; always 'png'.",
                      "type": "string"
                    },
                    "height": {
                      "description": "PNG height in pixels.",
                      "type": "integer"
                    },
                    "image_base64": {
                      "description": "Base64-encoded PNG of the QR code.",
                      "type": "string"
                    },
                    "modules": {
                      "description": "QR module count per side (the grid dimension).",
                      "type": "integer"
                    },
                    "size_bytes": {
                      "description": "Byte length of the raw PNG.",
                      "type": "integer"
                    },
                    "version": {
                      "description": "QR version (1-40) chosen to fit the data.",
                      "type": "integer"
                    },
                    "width": {
                      "description": "PNG width in pixels.",
                      "type": "integer"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-23T23:03:40.905Z",
    "quality": {
      "l30DaysTotalCalls": 5,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-23T23:03:40.685Z"
    },
    "resource": "https://qr-api-production-1836.up.railway.app/generate/basic",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Generate a QR code PNG (returned base64-encoded in JSON) for any text or URL using default black-on-white styling."
}

What the leaf hashes

{"body":"2cea5747d4688b5ecd4339110255ef21d98f1c0f7ec34d45423ce72dea27d46c","id":118937,"kind":"listing","method":"baseline/1","observed_us":1793025614038247,"prev":null,"subject":"x402_bazaar:https://qr-api-production-1836.up.railway.app/generate/basic","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. 0x3b350656bf049e8e0432ab2b96214c45bc15381736f62568bf75773cc65937f3
2. 0x744aa98ca6b1e6af6ffc8dc9c9c99acc4fe7ea9df2d0bce5c6462f08c22b40cf
3. 0xe721c24729847812751fd63ceaea0e5fee1f98def2a34062c6967beb85a73e3c
4. 0x54e4bf977c10bc6379a9d2ab1982460880c426bd012c4a17eeea5532a9867b50
5. 0x80bceacef1a8aef10a57e0e1cc054a1ccf8d4ef240f2294c536c84abc1198e23
6. 0xabd2c64255ae42261bb4b369fa7ac594a2e0c9a2749714df37ebcd1862eeb561
7. 0x2d99a4c7b3c16a16c08087ac7559e891e15419e3e4ff5e7f9afd3b9468050d41
8. 0xfcf98b311ea07eb498932755a4ee44e84cc55c674cc08005b5eda718ff1a92b0
9. 0x53ec4f7db6626141875a0d6a972bc6e34b0d6650dda3374d7f6fa68549cc9978
10. 0x0c9588d83dbdbfe86d2f03c80aaae11aaa963d8c04ce31ca8923453d940310f4
11. 0x229584c1d304842544db84ca7b368b5ececeb9d3bea2b23265eba1c7595d1220
12. 0xdb4b9388e3fe1df4b04e149e559f925fb354066ae1d2537fd6f918162716fadf
13. 0xe2214b3d6a48396930d1739b02ea366de2aac5337c9b9ff2aff28cecf6518139
14. 0x7f594f5609f388d64d3cda87b5631d393ee8300bb09bad71f150113a5886ee33
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae