← The evidence ledger
Evidence row 118661
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/mortgageComparisonCalculator
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- c403e491f681d7c459dbf9fa1e9e9e649d781610270f9058cb4c51452a46c537
- Leaf
- 0x889ab390c54706e038ee73ee3fda1fed6376e67c99084486204bc5ad0c587ecd
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": 3,
"l30DaysUniquePayers": 2,
"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":"c403e491f681d7c459dbf9fa1e9e9e649d781610270f9058cb4c51452a46c537","id":118661,"kind":"listing","method":"baseline/1","observed_us":1793025613575339,"prev":null,"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 (296695 rows).
- 0x889b401756cb62b3dbea1ecfa72c877f3768ca0ae25ffb0a1c235c5bfae3315f
- 0xc31abf9e350af4fee9f71ea183176064aaea6f032b5257c481ba3a2e1b832325
- 0xf862c2fa5eb2d22e39abdeeef022c2fe494d06c621e632737d933ba96fff2eba
- 0x3c168d754a0df166aee31f14c8ef84f16ebd0676be5f1ecfeb487484ec5d3fd5
- 0xd58ee60115bf6e83cd845fe225da05da6b0bf2eb69c69dc3976db42c5612ac8a
- 0x633feaf7db212ecd2b2cfc4d60f1beb5c37949211231e59f328533e82793c19b
- 0xdbd223eda6ebc3f78c851b2d43b22c647ca63b13ae8eed907a78dafa5fd3f428
- 0xec9ebfb2a70291ac3b9bbe0d72ba46dea1b2cf4cd9fc2e28a5a6f2b4007df0e8
- 0x5b6e8e0541fb344293a23841c54b771292c6b9fa07e54e6ac5c6622881ab8d78
- 0x0bddd95edb3cc8a74f81c35b1f32507f6ed7a6ed6ae13fea115bbe410ecc9777
- 0x8c20bf7d4b3dd52508d554a379143f96b80b2bc0af227c0b1ce2e34d99c6430b
- 0x7bf2d426bb827b94d7608055662cf2e3f09791e1a4c2c6bd606c0a9e89b18e59
- 0x49d11be052a4c069b10250aaba214f566b3f2e5aaa7a98e82ccc6a71c0e801a0
- 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
- 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
- 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae