Evidence row 2202017

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://css-design-calc.x402tookit.com/golden-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": "Split a length into major and minor parts by the golden ratio (or silver, root-2, custom) with matching rectangle sizes.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "ratio": "golden",
              "total": 1200
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T14:32:43.923Z",
              "cssGridColumns": "1.618fr 1fr",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "major": 741.6407865,
              "majorPercent": 61.8034,
              "minor": 458.3592135,
              "minorPercent": 38.1966,
              "nextLarger": 1941.6407865,
              "nextSmaller": 741.6407865,
              "notChecked": [
                "whether a golden split looks better than another (a design convention, not a rule)",
                "gutters and padding, which change the effective proportions",
                "…1 more"
              ],
              "ratio": 1.6180339887,
              "ratioName": "golden",
              "reasons": [
                "The larger part divided by the smaller part equals the ratio; the whole divided by the larger part equals the ratio too only for the golden ratio.",
                "As a rectangle: width 1200 needs height 741.640786."
              ],
              "rectangleHeight": 741.6407865,
              "rectangleWidthForHeight": 1941.6407865,
              "source": "Golden ratio phi = (1 + sqrt 5)/2 and the related metallic means, computed locally",
              "summary": "1200 splits into 741.640786 (61.8034%) and 458.359214 (38.1966%) at ratio 1.618034 (golden).",
              "total": 1200,
              "verdict": "COMPUTED",
              "wholeToMajorRatio": 1.61803399
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
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              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "ratio": {
                      "description": "golden (default 1.618), silver (2.414), root-2, root-3, root-5, thirds, or a number above 1",
                      "type": "string"
                    },
                    "total": {
                      "description": "The length to split, in any unit",
                      "type": "number"
                    }
                  },
                  "required": [
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                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
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                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
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                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "cssGridColumns": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "major": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "majorPercent": {
                      "type": [
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                        "number"
                      ]
                    },
                    "minor": {
                      "type": [
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                        "number"
                      ]
                    },
                    "minorPercent": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "nextLarger": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "nextSmaller": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "ratio": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "ratioName": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "rectangleHeight": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "rectangleWidthForHeight": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
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                        "string"
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                    },
                    "total": {
                      "type": [
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                        "number"
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                    "verdict": {
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                        "string"
                      ]
                    },
                    "wholeToMajorRatio": {
                      "type": [
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                        "number"
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                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
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                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:46:45.302Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:46:45.122Z"
    },
    "resource": "https://css-design-calc.x402tookit.com/golden-ratio",
    "serviceName": "CSS Design Calc",
    "tags": [
      "css",
      "golden-ratio",
      "layout",
      "proportion"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Split a length into major and minor parts by the golden ratio (or silver, root-2, custom) with matching rectangle sizes."
}

What the leaf hashes

{"body":"2f5f553d7bb051f4bcd11b3cc824c8d87080f832aac41c58fef77163e0a53e60","id":2202017,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646811364260,"prev":null,"subject":"x402_bazaar:https://css-design-calc.x402tookit.com/golden-ratio","subject_kind":"source_record"}

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. 0xb499675b5d5859388a0d3eef97b6af71555618965cfcf1fd08fd2590426ed7c9
2. 0x365471cac254a508a0237e30fe9e56ac2e01db371c52253215f06bfbe6e89d4a
3. 0xad25818dcf82774d76fbcd419e66bb5241aa0c69d5dee3bc7fe7c259697e61d9
4. 0x9ecd8dd60bc4e1809f189f537b42c414967779574bc5c7005c64fde57dd2b86a
5. 0xfccab08abfa1dc66934a633026ade062f4002014d1ba04e43fbe937dc35b6f3f
6. 0xeec06c98ee7764bcfa4363a6bd2f6f9256648e45b4f7a7180b840331d5f57081
7. 0x9f01cc4c1f03206ea3d9ad0b912aec5fe4879cee63cfae13017ca35c6972e0ab
8. 0x44508273bcbbf7540d6aa338dbc635389f4541541d7d2f1529b70edccf0cdff5
9. 0x7734280657d7dd556d7fb04188cc20344151c36d664045a9e6db354c164050f9
10. 0xa885ee95f751280fd19fba9daa1f939fd6d868e104b763e6bf14389725f4396c
11. 0xae3d752497e0b1117ec3e1c4e69aabf294556064d09c8f5a7ec60bea1e2919c0
12. 0x699ae7fef9e8b87b378f2b7f3c6ae482aa3f19000267f273752a19f30c704991
13. 0x8f3b097427a1bfae26e9231cb5b00552011a27ad93aa4c0d3e267190fcbbb962
14. 0x08da04eef748b7ac08271324db18913501d72c52afa240bf3f08b6da46e3b97f
15. 0x834b6b9a36b42da183e2542785e8d2d7548ace455268a81922edbe6020cef644
16. 0x2922573a524a0694086782ac45fa3083d3fc3f6a2a479b2105e1e2f06b2916f7
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af