Evidence row 2201867

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://us-tax-calc.x402tookit.com/standard-deduction"
    ]
  ],
  "name": "US Tax Calculators",
  "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": "US federal standard deduction by filing status and tax year, with age 65 or blind add-ons and the dependent filer limit.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "aged_count": 1,
              "filing_status": "single",
              "year": 2025
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-21T05:43:36.900Z",
              "basicAfterDependentRule": 15750,
              "basicAmount": 15750,
              "degraded": false,
              "dependentLimited": false,
              "dependentRule": {
                "floor": 1350,
                "plusEarnedIncome": 450
              },
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "extraBoxes": 1,
              "extraPerBox": 2000,
              "extraTotal": 2000,
              "filingStatus": "single",
              "notChecked": [
                "state and local income tax",
                "tax credits (child tax credit, earned income, education, energy) and AMT",
                "…3 more"
              ],
              "reasons": [
                "The 2025 figures are the amounts set by the One, Big, Beautiful Bill Act (Rev. Proc. 2025-32 section 3.01), not the earlier Rev. Proc. 2024-40 amounts."
              ],
              "source": "computed locally",
              "standardDeduction": 17750,
              "summary": "2025 Single standard deduction: 17750 (basic 15750 plus 2000 for 1 age/blind box).",
              "taxYear": 2025,
              "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": {
                    "aged_count": {
                      "description": "People aged 65+ (0-2 joint, 0-1 otherwise)",
                      "type": "integer"
                    },
                    "blind_count": {
                      "description": "Blind people (0-2 joint, 0-1 otherwise)",
                      "type": "integer"
                    },
                    "dependent": {
                      "description": "True if someone else can claim this filer as a dependent",
                      "type": "boolean"
                    },
                    "earned_income": {
                      "description": "Earned income, used only with dependent=true",
                      "type": "number"
                    },
                    "filing_status": {
                      "description": "single, mfj, mfs, hoh or qss",
                      "type": "string"
                    },
                    "year": {
                      "description": "Tax year (default: latest bundled)",
                      "type": "integer"
                    }
                  },
                  "required": [
                    "filing_status"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "basicAfterDependentRule": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "basicAmount": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "dependentLimited": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "dependentRule": {
                      "properties": {
                        "floor": {
                          "type": [
                            "null",
                            "number"
                          ]
                        },
                        "plusEarnedIncome": {
                          "type": [
                            "null",
                            "number"
                          ]
                        }
                      },
                      "type": [
                        "null",
                        "object"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "extraBoxes": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "extraPerBox": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "extraTotal": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "filingStatus": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "standardDeduction": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "taxYear": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T23:23:29.088Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-01T23:23:28.909Z"
    },
    "resource": "https://us-tax-calc.x402tookit.com/standard-deduction",
    "serviceName": "US Tax Calculators",
    "tags": [
      "tax",
      "irs",
      "standard-deduction"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "US federal standard deduction by filing status and tax year, with age 65 or blind add-ons and the dependent filer limit."
}

What the leaf hashes

{"body":"ae291178ad13e55796fd3a643a12e5461d582c9e40ba6f7bb4912f4d949bc882","id":2201867,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646809952409,"prev":null,"subject":"x402_bazaar:https://us-tax-calc.x402tookit.com/standard-deduction","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. 0x9ff8d0b29476979da88547627bc8661c259d733c2e2b09a0cadcb27ef3da6d5b
2. 0x85581a28d754662342104f0c786ae19f379c619cabf9baef85a5c157ff724f32
3. 0xb39caa4a5f0e769fccd61c3734388f6986a9c1550a1fef4c285d8d69004204d1
4. 0xae40f3e20dfdd71383d17b57471ab2190f5c3ba1a31deeef39ec6a7e93e7f4ff
5. 0x177eb97d2db573e9f9b7e98a37b1df144c93b4a40ee38e65d19561d539595605
6. 0xeb3fffb2666bfd1f52f4be1f864450486adb319819ee5157dddb61a45204838e
7. 0x5124afc7100fdc8ee4d6d37ef35807047046864c4e910214ef3002960a966a35
8. 0x39fb50398562a2306fd84ffccef493427312854f1a9899cf42de4b4ddcf4c7c7
9. 0x817ca009feefda08decccf28f78a2e39477b0f05e53344dd97683f66e8edd722
10. 0x2f27a12daeb52a6be4b0afac30b1c00052c4b0b99ceade47791f319a97c616b3
11. 0x731aed48e6ebaea0f0f1f25553e659f1a1914079500e9c2f2d1dfe746b9a61d9
12. 0x276e2fa0c21c2220acec5005667f6b7cfa183a8daaf7f317e5077bc4c6e08db0
13. 0x2ff7b1db58554b94f3d17b53c4f892ded109f497ad86eeaa0f83588921b759b1
14. 0xdff61622855886d80ecda4fb808422c854d0801605b73184332cf83604a730ff
15. 0x9c91ecb84461aa4cb2a891252746755d862a88fe9bad822700cdb99eaab2edca
16. 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af