Evidence row 121036

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://screenshot-api-production-fe7e.up.railway.app/capture/element"
    ]
  ],
  "name": "screenshot-api-production-fe7e.up.railway.app/capture/element",
  "owner_address": "0xffc458db291b4abce020fe3de4f91f2770e537b1",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xFFc458dB291b4ABcE020fE3de4f91F2770E537b1",
        "scheme": "exact"
      }
    ],
    "description": "Capture a PNG screenshot of a single CSS-selected element on an http(s) URL; returns a JSON envelope with the PNG base64-encoded under image_base64, plus selector, final_url, title, viewport, and size.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "height": 800,
              "selector": "#main",
              "url": "https://example.com",
              "wait_until": "networkidle",
              "width": 1280
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "final_url": "https://example.com/",
              "format": "png",
              "image_base64": "iVBORw0KGgoAAAANSUhEUgAAAAUA... (base64-encoded PNG bytes, truncated)",
              "selector": "#main",
              "size_bytes": 8192,
              "title": "Example Domain",
              "url": "https://example.com",
              "viewport": {
                "height": 800,
                "width": 1280
              }
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "height": {
                      "description": "Viewport height in pixels (240-3840). Defaults to 800.",
                      "type": "integer"
                    },
                    "selector": {
                      "description": "CSS selector of the single element to capture, e.g. '#main' or '.hero'.",
                      "type": "string"
                    },
                    "url": {
                      "description": "The http(s) URL to capture, e.g. 'https://example.com'. Internal/loopback hosts are rejected.",
                      "type": "string"
                    },
                    "wait_until": {
                      "description": "Playwright load state to wait for before capture: 'load', 'domcontentloaded', 'networkidle', or 'commit'. Defaults to 'networkidle'.",
                      "type": "string"
                    },
                    "width": {
                      "description": "Viewport width in pixels (320-3840). Defaults to 1280.",
                      "type": "integer"
                    }
                  },
                  "required": [
                    "url",
                    "selector"
                  ],
                  "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": {
                    "final_url": {
                      "type": "string"
                    },
                    "format": {
                      "type": "string"
                    },
                    "image_base64": {
                      "description": "Base64-encoded PNG bytes of the selected element.",
                      "type": "string"
                    },
                    "selector": {
                      "type": "string"
                    },
                    "size_bytes": {
                      "type": "integer"
                    },
                    "title": {
                      "type": "string"
                    },
                    "url": {
                      "type": "string"
                    },
                    "viewport": {
                      "description": "The clamped viewport used, as {width, height} in pixels.",
                      "type": "object"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-24T04:32:08.693Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-24T04:32:08.503Z"
    },
    "resource": "https://screenshot-api-production-fe7e.up.railway.app/capture/element",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Capture a PNG screenshot of a single CSS-selected element on an http(s) URL; returns a JSON envelope with the PNG base64-encoded under image_base64, plus selector, final_url, title, viewport, and size."
}

What the leaf hashes

{"body":"12c6f8f2f288fd3de1d2e173ee33f780895d3216030ee0076bea2fcd77c8dcf9","id":121036,"kind":"listing","method":"baseline/1","observed_us":1793025619168943,"prev":null,"subject":"x402_bazaar:https://screenshot-api-production-fe7e.up.railway.app/capture/element","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. 0xb7d2850c351948a91a852ee6a97b393cd647b0bf25f8ee671b2460e1f1e0a0cc
2. 0x74e7c06a7127b39a8f535c8a6f3883462cc069011ada1d3e91c99a7f8044ca21
3. 0x3d2fde862c847b3cf4a67bb8eb606f1318ebe40f0b4ac64cc650357ba062d635
4. 0xbec921f54fa68b5aeffab00d4249c4eee563d029b4e4c3af54c92c1e9c74ba1b
5. 0x1eccfb5c24c5d1dce36879ed619285744e87b99d99ddcacb97173d7deb8d0776
6. 0x8e6ab76bdb5b0d96d6194af94dfe246672674eb6b4d390836179818607b3afa1
7. 0x4ffd7b5dec29019886a3f7b0488d27423b2a86eef5791388a00e20d1246d6b5c
8. 0x424d5a112a5401fe19c6c9731ebe67cc9e1d3383a661f60e9e3eecb4326dcdd1
9. 0xf6a23fe3ecd50aecc0c5826826e0a89f09e467535ac3a8650edb2c6e7fbc2de0
10. 0xa4be442ac364076ac81def5d874f026f701ed9c8fce453af09052efe34f0c7ee
11. 0x930671b38b693880d085315beda88a1c227f3639e9a0e0be6b0665bb173a65db
12. 0xb6efd79902cac6d5a402ebecb8069402f00961ab80cd71b4d647fbc686d975ec
13. 0x2f43fe2b2533a5f40c107c114e458e226102f5f8ae91f097e964345880e30928
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae