Evidence row 2201586

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://math-geometry.x402tookit.com/trig-values"
    ]
  ],
  "name": "Algebra and Geometry Solvers",
  "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": "Sine, cosine, tangent of an angle in degrees or radians, exact values at special angles, and inverse trig functions.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "angle": 30,
              "unit": "deg"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T08:51:20.422Z",
              "cos": 0.866025403784,
              "cot": 1.73205080757,
              "csc": 2,
              "degraded": false,
              "degrees": 30,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "exactCos": "sqrt(3)/2",
              "exactSin": "1/2",
              "exactTan": "sqrt(3)/3",
              "notChecked": [
                "angles of enormous magnitude where double-precision argument reduction loses accuracy",
                "exact forms other than multiples of 30 and 45 degrees"
              ],
              "radians": 0.523598775598,
              "reasons": [
                "Computed in double precision; values within 1e-15 of zero are shown as 0.",
                "Reciprocals: sec = 1/cos, csc = 1/sin, cot = 1/tan."
              ],
              "reducedAngleDeg": 30,
              "sec": 1.15470053838,
              "sin": 0.5,
              "source": "computed locally",
              "summary": "30 deg: sin 0.5, cos 0.8660254038, tan 0.5773502692 (exact: sin 1/2, cos sqrt(3)/2, tan sqrt(3)/3).",
              "tan": 0.57735026919,
              "verdict": "COMPUTED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "angle": {
                      "description": "Angle (give this, or inverse and value)",
                      "type": "number"
                    },
                    "inverse": {
                      "description": "asin, acos or atan to compute an angle from value",
                      "type": "string"
                    },
                    "unit": {
                      "description": "deg (default) or rad",
                      "type": "string"
                    },
                    "value": {
                      "description": "Value for the inverse function",
                      "type": "number"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "cos": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "cot": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "csc": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "degrees": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "exactCos": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "exactSin": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "exactTan": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "radians": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reducedAngleDeg": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "sec": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "sin": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "tan": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:37:40.078Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T23:37:39.924Z"
    },
    "resource": "https://math-geometry.x402tookit.com/trig-values",
    "serviceName": "Algebra and Geometry Solvers",
    "tags": [
      "trigonometry",
      "sine",
      "cosine",
      "calculator"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Sine, cosine, tangent of an angle in degrees or radians, exact values at special angles, and inverse trig functions."
}

What the leaf hashes

{"body":"28d6cddadf14cb7c5d9ddb8e8254cda4d774fd6ec42ada1d636f5dbd6fcc79b4","id":2201586,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646806784853,"prev":null,"subject":"x402_bazaar:https://math-geometry.x402tookit.com/trig-values","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. 0x1b2ed93f1217e265e7bf191960d0366aaad685d58ef1dff4ede0247d3769a901
2. 0x0d1055a3f50e5101f662926d8eec75e85128a9459680ce7718fc0eb9ff8b41f6
3. 0x7577264d6917725bfc9514158f15671a4fe3c6b70ddde02d384e9bf80eaba98e
4. 0xfec4a71efd7415c35d9353b47990257a14651a5d88ab15243e4aac5f9105112a
5. 0x434c6bf4e9ead2385ebc0ad78127cb4698b8b856525a76729b30198690ef6576
6. 0xd730c4f72d35a0c40601ba742cd901cb0283265d7d6f59812c008487aec970f6
7. 0xffb3d5e5939cd74da065d65719aabc95db0db0de8d0150bd07048f749e3d7d36
8. 0x8908a618030dc60c957e8432e8d4d3f2aa71be64bd92419e3da4a41ff231d5ad
9. 0x2025aaace9b41362de9110a2729a5aefce5cd83b519b6a2659c9d94364399384
10. 0xfc47b2086e6c1b85d1e562539c4fe5c87ff196dd2586c845ab81a5d48b2ed36c
11. 0xca20b426596153adc739a514506d4e712329375c586b7a54ec8bc23c00165468
12. 0x1b8180a62930c76e7899da8ca90344aeaf32e1420f1e6b2bc56928fd37a13e3c
13. 0xe2dd127d9ccc5339e1d044fef0fe0ebbce9fefdedc7bf9fb2070bf570a64799e
14. 0xad8410fe2298c1ccff00c301cabf57d2495acf6e614e5236bbeb834747908ca4
15. 0xb6470417fdb2a0e3de9c1abb1722cbc88bc0dfb5afda0a77e1eac26ab1683ece
16. 0xac40f077ca4be8c3432a67771725cc315e8101fc2649999cfad2c900a7640e27
17. 0x53a741b69e9e51c4a288a74712aa6ac3fb28c8923cd3e6461d161c4f2d48b31a
18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af