Evidence row 2202022

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://css-design-calc.x402tookit.com/aspect-ratio"
    ]
  ],
  "name": "CSS Design Calc",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Aspect ratio of a width and height (simplified, nearest common ratio) or the missing side for a ratio, with CSS values.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "height": 1080,
              "width": 1920
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T14:32:42.615Z",
              "commonRatios": [
                "1:1",
                "5:4",
                "…12 more"
              ],
              "cssAspectRatio": "16 / 9",
              "degraded": false,
              "derivedSide": null,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "height": 1080,
              "nearestCommonDifferencePercent": 0,
              "nearestCommonRatio": "16:9",
              "notChecked": [
                "pixel aspect ratio (non-square pixels), anamorphic formats and rotation metadata",
                "crop or letterbox decisions",
                "…1 more"
              ],
              "orientation": "landscape",
              "paddingTopPercent": 56.25,
              "ratioDecimal": 1.77777778,
              "reasons": [
                "Padding-top trick: 56.25% gives a box of this ratio; modern CSS: aspect-ratio: 16 / 9."
              ],
              "simplified": "16:9",
              "source": "Euclid's algorithm and common display and film ratios, computed locally",
              "summary": "1920 x 1080 is 16:9 (1.77778), the common ratio 16:9.",
              "verdict": "COMMON_RATIO",
              "width": 1920
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "height": {
                      "description": "Height in any unit",
                      "type": "number"
                    },
                    "ratio": {
                      "description": "Ratio such as 16:9, 4/3 or 1.778 (with width or height to find the other side)",
                      "type": "string"
                    },
                    "width": {
                      "description": "Width in any unit",
                      "type": "number"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "commonRatios": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "cssAspectRatio": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "derivedSide": {},
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "height": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "nearestCommonDifferencePercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "nearestCommonRatio": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "orientation": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "paddingTopPercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "ratioDecimal": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "simplified": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "width": {
                      "type": [
                        "null",
                        "number"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:46:31.503Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:46:31.228Z"
    },
    "resource": "https://css-design-calc.x402tookit.com/aspect-ratio",
    "serviceName": "CSS Design Calc",
    "tags": [
      "css",
      "aspect-ratio",
      "images",
      "video"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Aspect ratio of a width and height (simplified, nearest common ratio) or the missing side for a ratio, with CSS values."
}

What the leaf hashes

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Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x505d9611472271ff3f12638668cdd0b7888dd7837c3d53faa39bfef69e7c0eae
2. 0x8056101df275b3c0b76e2ea2ab316e901351fbe59e5bdaacbdea026992016741
3. 0x65b92b656c3ed7b07611879f8b51ef038ea944787f71d6488985c29f4924804f
4. 0xa2e0b96d8d9183371afbffa170f537632f749961b6c6af35fa3d5d2a01ae2c46
5. 0x246460cabb5f7d07e4731dcaa6f2d286925dd91f20464500e51352e3ea126aa2
6. 0x62066c3684ffb2cbdc530b489ff06380f98b445f485737e785195f2e90d6f761
7. 0x020dca3dfdc23647cea05a304704e83ca747d9d145c17d2b5c24bad8b0485116
8. 0x683eee465b8843be7dce862937eca005901e7ad2cf5d19011e644b551858cfa2
9. 0x261654b93ea7aef180cc6ffeb0ab211e1c393f4c03e995f57a7b88e73418a982
10. 0x605e3971d6d14e252545bf385dd09b36681487c7f47c6db0754cf709e828692f
11. 0x3f5fffad2668ae3c9ceb042c4134cd873b781240805b82b02ea21269e35be287
12. 0x35f84c0e4e28cd4a63c3ad6490420fe24bf67bba5f080e714a71d6cb0d991695
13. 0x2f0e87a22fc6aaaa04d17a8f1c5dda340b8d3c208a1b8e26986aed7f54ec42a7
14. 0xa96ecfe7ab9f1788120ca262a1b69b7b258160df41b4041d36fcd211c95d26d9
15. 0x67c99d356de30f9cfab88af48fbaa18909ef230dd09947e84da060bc03aca929
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af