← The evidence ledger
Evidence row 77200
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://loonie-toll.onrender.com/college
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 89ed7ebacd9e9713ce7792c0aee028a5035989a3820a32d40271fcf725d4d237
- Leaf
- 0xa8f0cb680c210a324fca5c5abefa3e8c3eeeb36ce0dd89412eb328079417e875
What was observed
{
"endpoints": [
[
"x402",
"https://loonie-toll.onrender.com/college"
]
],
"name": "ClearCheck",
"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": "BENrLoUbndxoNMUS5JXApGMtNykLjFXXixMtpDwDR9SP"
},
"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": "College verdict: cost, size, admission rate, completion, median earnings and debt for a named US institution.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"name": "Vanderbilt"
},
"type": "http"
},
"output": {
"example": {
"bestMatch": {
"admissionRatePct": 5.9,
"avgNetPriceUsd": 15846,
"city": "Nashville",
"completionRatePct": 93.4,
"control": "private nonprofit",
"medianDebtCompletersUsd": 14000,
"medianEarnings10yrUsd": 91565,
"name": "Vanderbilt University",
"pellGrantRatePct": 20.2,
"scorecardId": 221999,
"state": "TN",
"tuitionInStateUsd": 67498,
"tuitionOutOfStateUsd": 67498,
"undergradEnrollment": 7208,
"website": "www.vanderbilt.edu/"
},
"disclaimer": "Advisory only, provided as is without warranty of accuracy or completeness. Scorecard figures are federal-aid-cohort based and lag by 1-2 years; earnings cover federally aided students only. Not affil…",
"query": {
"name": "Vanderbilt",
"state": null
},
"reasons": [
"Vanderbilt University (Nashville, TN) — private nonprofit, 7,208 undergrads.",
"Median earnings 10 years after entry: $91,565 vs median completer debt $14,000 — 6.5x.",
"…3 more"
],
"retrievedAt": "2026-09-17T16:24:04.930Z",
"schools": [
{
"admissionRatePct": 5.9,
"avgNetPriceUsd": 15846,
"city": "Nashville",
"completionRatePct": 93.4,
"control": "private nonprofit",
"medianDebtCompletersUsd": 14000,
"medianEarnings10yrUsd": 91565,
"name": "Vanderbilt University",
"pellGrantRatePct": 20.2,
"scorecardId": 221999,
"state": "TN",
"tuitionInStateUsd": 67498,
"tuitionOutOfStateUsd": 67498,
"undergradEnrollment": 7208,
"website": "www.vanderbilt.edu/"
}
],
"source": "US Dept of Education College Scorecard",
"verdict": "STRONG_OUTCOMES"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"limit": {
"description": "Max matches to return, default 3",
"type": "integer"
},
"name": {
"description": "Institution name, e.g. 'Vanderbilt'",
"type": "string"
},
"state": {
"description": "2-letter state code to narrow a common name",
"type": "string"
}
},
"required": [
"name"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"bestMatch": {
"properties": {
"admissionRatePct": {
"type": [
"null",
"number"
]
},
"avgNetPriceUsd": {
"type": [
"null",
"number"
]
},
"city": {
"type": [
"null",
"string"
]
},
"completionRatePct": {
"type": [
"null",
"number"
]
},
"control": {
"type": [
"null",
"string"
]
},
"medianDebtCompletersUsd": {
"type": [
"null",
"number"
]
},
"medianEarnings10yrUsd": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"pellGrantRatePct": {
"type": [
"null",
"number"
]
},
"scorecardId": {
"type": [
"null",
"number"
]
},
"state": {
"type": [
"null",
"string"
]
},
"tuitionInStateUsd": {
"type": [
"null",
"number"
]
},
"tuitionOutOfStateUsd": {
"type": [
"null",
"number"
]
},
"undergradEnrollment": {
"type": [
"null",
"number"
]
},
"website": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"query": {
"properties": {
"name": {
"type": [
"null",
"string"
]
},
"state": {}
},
"type": [
"null",
"object"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"retrievedAt": {
"type": [
"null",
"string"
]
},
"schools": {
"items": {
"properties": {
"admissionRatePct": {
"type": [
"null",
"number"
]
},
"avgNetPriceUsd": {
"type": [
"null",
"number"
]
},
"city": {
"type": [
"null",
"string"
]
},
"completionRatePct": {
"type": [
"null",
"number"
]
},
"control": {
"type": [
"null",
"string"
]
},
"medianDebtCompletersUsd": {
"type": [
"null",
"number"
]
},
"medianEarnings10yrUsd": {
"type": [
"null",
"number"
]
},
"name": {
"type": [
"null",
"string"
]
},
"pellGrantRatePct": {
"type": [
"null",
"number"
]
},
"scorecardId": {
"type": [
"null",
"number"
]
},
"state": {
"type": [
"null",
"string"
]
},
"tuitionInStateUsd": {
"type": [
"null",
"number"
]
},
"tuitionOutOfStateUsd": {
"type": [
"null",
"number"
]
},
"undergradEnrollment": {
"type": [
"null",
"number"
]
},
"website": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-20T13:34:53.946Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-20T13:34:53.564Z"
},
"resource": "https://loonie-toll.onrender.com/college",
"serviceName": "ClearCheck",
"tags": [
"government-data",
"compliance",
"verification",
"public-records",
"risk-screening"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "College verdict: cost, size, admission rate, completion, median earnings and debt for a named US institution."
}What the leaf hashes
{"body":"89ed7ebacd9e9713ce7792c0aee028a5035989a3820a32d40271fcf725d4d237","id":77200,"kind":"listing","method":"baseline/1","observed_us":1793025493453133,"prev":null,"subject":"x402_bazaar:https://loonie-toll.onrender.com/college","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).
- 0xa8f0cc802eebc4ab6fb02bd34f98c20b50ae578827853deca5333a693fb6a9f4
- 0xa21f19c7ff87f7dab1d3570d077ae75220436f5a14277beee2f323eb927f5ccf
- 0xf0f9322002d9a97123d09303b0b397259210e82d612b99148a517fd466a03543
- 0x45a0faa792f0a78ddb8d5f0c2927063764bf5fd1dd7a09230b1dec7e88829707
- 0x2b2ee442dd401fa66a9e786aca592fe998b0c75ecb147ceb54b4b8987146d0d5
- 0xb84727603e53e5ec2b51cc6adfca62c1537c3935f15a65e2318ec998f4d047f1
- 0x931a66a681f29b9837430d65e5e490c2c2d872a5bef0a0c318629e320d42ead4
- 0xa4083cc7830fc1b50fad14fe08e218eecae480b0f693f8415c14ad90d1f2fcb1
- 0xf03b5580b4cf240f57781e01d5a8c5662eb3f5d9781d4b04b50611882de9ffd1
- 0x59283b4f1957eed1ca397cea7a54cad8fd28e2488fdbd3f14185468ebe1209e1
- 0xcc46e37d035d0d90e3d86104e55f155ffacd1530f11ceef85fa02db50beb78a5
- 0xb31654882cc5704ae07fa6a4ad12ef5516ea95a5ec8b5affdbdbec199402e29a
- 0x292ebdce6b8d3d7ef08ad646a0fd97dee9313ab55c1a350807d9f3013794c37a
- 0x428106f4ae4ec142f17aebf6fa50935242f8d3f1c211cf95d6351d03d11da2b7
- 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
- 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
- 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
- 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae