Evidence row 2201889

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://finance-calculators.x402tookit.com/mortgage-affordability"
    ]
  ],
  "name": "Finance 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": "Home price you can afford under the 28/36 rule from income, monthly debts, down payment, rate and term.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "annual_income": 120000,
              "annual_rate_pct": 6.5,
              "down_payment": 60000,
              "monthly_debts": 500,
              "tax_insurance_monthly": 600,
              "years": 30
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T03:59:14.990Z",
              "checkPayment": 2200,
              "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.",
              "grossMonthlyIncome": 10000,
              "limitedBy": "housing ratio (28%)",
              "maxLoan": 348063.8,
              "maxMonthlyPrincipalInterest": 2200,
              "maxPurchasePrice": 408063.8,
              "notChecked": [
                "credit score and lender rules",
                "closing costs and PMI",
                "…2 more"
              ],
              "reasons": [
                "28/36 rule: housing costs up to 28% and all debt payments up to 36% of gross monthly income."
              ],
              "source": "computed locally",
              "summary": "Maximum loan $348,063.80 (payment $2,200.00 for principal and interest), so a price up to $408,063.80 with $60,000.00 down. The housing ratio (28%) is the limit.",
              "verdict": "AFFORDABILITY_COMPUTED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "annual_income": {
                      "description": "Gross annual household income",
                      "type": "number"
                    },
                    "annual_rate_pct": {
                      "description": "Mortgage rate in percent",
                      "type": "number"
                    },
                    "down_payment": {
                      "description": "Cash down payment, default 0",
                      "type": "number"
                    },
                    "monthly_debts": {
                      "description": "Other monthly debt payments, default 0",
                      "type": "number"
                    },
                    "tax_insurance_monthly": {
                      "description": "Property tax plus insurance per month, default 0",
                      "type": "number"
                    },
                    "years": {
                      "description": "Term in years, default 30",
                      "type": "integer"
                    }
                  },
                  "required": [
                    "annual_income",
                    "annual_rate_pct"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "checkPayment": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "grossMonthlyIncome": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "limitedBy": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "maxLoan": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "maxMonthlyPrincipalInterest": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "maxPurchasePrice": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:54:37.161Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:54:36.977Z"
    },
    "resource": "https://finance-calculators.x402tookit.com/mortgage-affordability",
    "serviceName": "Finance Calculators",
    "tags": [
      "mortgage",
      "affordability",
      "housing"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Home price you can afford under the 28/36 rule from income, monthly debts, down payment, rate and term."
}

What the leaf hashes

{"body":"faf5c4f21e20ecc9226209fda44c5794811f88427f1b5eb8c843849b702996bf","id":2201889,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810058179,"prev":null,"subject":"x402_bazaar:https://finance-calculators.x402tookit.com/mortgage-affordability","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. 0xb3e3abf97c97852bb9eea226df27341ddf4088ea82260c1b6430b787628bc0e5
2. 0x504806fb78369717b42ae980f34a924f2e7081a8c06cdc604d8e007572f9f159
3. 0xcd63ae123025530e74309415ec42662704e577ed776e76e172a881b4cb91c9f4
4. 0xdcc506bcbb73839537bf72cb2d7f342aab9ee67a38c8ae2af5b138c32a9f09ea
5. 0x9d783d1fcd9fc3a2e174392ab4fc814e5ec3dd85adf2669310220b9f4e6acf04
6. 0x6beabad02fc993522896d64ee992c5d99446d92641bb66a748f2a2af1b5b3bc7
7. 0x991de53e31739211dbc0437ff0dfe995b071c51eb329de7a604116b230e9f0a0
8. 0x3326744d207a7adf5c1950f79d5916cb9f89d75c1fb987b7697ebd9450a02f39
9. 0x68e9e8033c6f8720683bcdaa77ee86af4e7ceff56ff36a103a1c820cef181a03
10. 0x61706778c9036e81971ddefc8a76c5e11783a4a8cd03fbb252d5a11889713a91
11. 0x4b73edf36be1455061b42d181bf1261a1a1aab171bf37e6107e4dae40d9756e1
12. 0x21e290c87b8dfbee1c890c9b97a09ed0f5503884eaeabff86472db1c091c14cd
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