Evidence row 1508489

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/mortgageComparisonCalculator"
    ]
  ],
  "name": "Sindri",
  "owner_address": "0x548efd4f4d4a5c3669dbb4cbb2b1a637feeec5f6",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6",
        "scheme": "exact"
      },
      {
        "amount": "10000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "APer2AbhckyMWyJanW2MZ2eRLcpL9Lmhks8rkmXfqjRG",
        "scheme": "exact"
      }
    ],
    "description": "15-year vs 30-year mortgage comparison calculator. Computes monthly payment and total interest for both loan terms on the same purchase price and down payment, and reports the payment and lifetime-interest tradeoff between them.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "downPaymentPercent": 0.2,
              "interestRate15": 0.055,
              "interestRate30": 0.065,
              "purchasePrice": 300000
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "fifteenYear": {
                  "monthlyPayment": 1961.0002910907208,
                  "totalInterest": 112980.05239633351,
                  "totalPaid": 352980.0523963297
                },
                "monthlyPaymentDifference": 444.0370347076039,
                "params": {
                  "downPaymentPercent": 0.2,
                  "interestRate15": 0.055,
                  "interestRate30": 0.065,
                  "purchasePrice": 300000
                },
                "thirtyYear": {
                  "monthlyPayment": 1516.963256383117,
                  "totalInterest": 306106.7722979182,
                  "totalPaid": 546106.772297922
                },
                "totalInterestSavings": 193126.7199015847
              },
              "ok": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "properties": {
                    "downPaymentPercent": {
                      "default": 0.2,
                      "description": "Down payment as a fraction of purchase price (0-1). Default 0.2.",
                      "type": "number"
                    },
                    "interestRate15": {
                      "description": "Annual interest rate for the 15-year loan, as a fraction.",
                      "type": "number"
                    },
                    "interestRate30": {
                      "description": "Annual interest rate for the 30-year loan, as a fraction.",
                      "type": "number"
                    },
                    "purchasePrice": {
                      "description": "Home purchase price.",
                      "type": "number"
                    }
                  },
                  "required": [
                    "purchasePrice",
                    "interestRate15",
                    "interestRate30"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      },
      "builder-code": {
        "info": {
          "a": "x402_api_vendor",
          "s": [
            "cdp_sdk_server"
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "a": {
              "description": "App builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            },
            "s": {
              "description": "Service builder codes",
              "items": {
                "pattern": "^[a-z0-9_]{1,32}$",
                "type": "string"
              },
              "maxItems": 11,
              "type": "array"
            },
            "w": {
              "description": "Wallet builder code",
              "pattern": "^[a-z0-9_]{1,32}$",
              "type": "string"
            }
          },
          "type": "object"
        }
      },
      "eip2612GasSponsoring": {},
      "erc20ApprovalGasSponsoring": {}
    },
    "lastUpdated": "2026-10-08T06:25:49.465Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-08T06:25:49.331Z"
    },
    "resource": "https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/mortgageComparisonCalculator",
    "serviceName": "Sindri",
    "tags": [
      "mortgage calculator",
      "15 vs 30 year",
      "home loan"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "15-year vs 30-year mortgage comparison calculator. Computes monthly payment and total interest for both loan terms on the same purchase price and down payment, and reports the payment and lifetime-interest tradeoff between them."
}

What the leaf hashes

{"body":"e07c4fcef3bfd86833e6f6f42d75849f39e6f2bb1e6dd1be4989b4d97318ca34","id":1508489,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793472752759226,"prev":1261120,"subject":"x402_bazaar:https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/mortgageComparisonCalculator","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0x3555516d26d141e4dea5b9eb799f8ee0fb702c936af922bd5a18d21e085f1218
2. 0x2dab5659caa67b831b8faef6e1b141d288c464189b19e30be88e83c1bcd8a0ae
3. 0xd0de65b3a268a72b6ac1adcaf71fa5fe9fee7fe3f78d27f05cc9d70e51d59a92
4. 0x08d18fb9a7d67aee32a42fceb4da5f4fced34d63da75262692ee762531340652
5. 0x0894aec08b077903d9ab5f23ef6b476bcdb461ce686820eb96f0a0660de91993
6. 0xa5404e049b4e81da2d74e4b523369a4de3c595f7041b743f7bd3ae2fd1c7ee02
7. 0xe8a1054bb6335664dbec37f9ef25e12c2277e5e6e386513e1e036d7fb7fba61a
8. 0x094d8f5a2b43fa15904f829ca8e90626c88a441df5c7ccaca9e40cc4f345dda6
9. 0x568e15b5defe1d0f64e38f7b6e95e6399f0a4032165fd89b51c0f9dca144962f
10. 0x9dc2e3998f8c8d28e8588e9da549ad48acc59c6dd089a83d3550a2e359cc60a5
11. 0xf5b19727fc0dd181805f93d5e96a09f0af7d8a791ac5538d2fe4b4fd33999818
12. 0xc5ddfdbc1993aa43d59a265b5f7fa85d84bbda4370ef9e220579e2a054b8230b
13. 0x2cbd8ba738ddea6efbe473c9611c3f1a8a83deb190d22414b516f5178301062d
14. 0xef0d1fd5544fb725719e2c1f829863138c2a1d7485e7f69d488a1dddb98843f6
15. 0xc712f139a437e96ecb98a6d83c47c29921720c39ba2e7e94f4973de043fb567c
16. 0x24ea73817c2ff07f87a42be89aff36ac5fe49b64420a647cd406ee60e6a77f70
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0