← The evidence ledger
Evidence row 77232
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://loonie-toll.onrender.com/streamflow
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 720ed96a8ac429afa35a9d792c3f62357e6d1f55e02f31d1b46c442c6e712886
- Leaf
- 0xe419b44d5183099ba634be03c9238376ef0042302119b3d474ddcc6bdb7f2ff7
What was observed
{
"endpoints": [
[
"x402",
"https://loonie-toll.onrender.com/streamflow"
]
],
"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": "Live streamflow for a USGS gauge with a HIGH / NORMAL / LOW verdict vs the site's own median for this day of year.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"site": "03431500"
},
"type": "http"
},
"output": {
"example": {
"discharge": {
"observedAt": "2026-09-17T10:30:00.000-05:00",
"siteName": "CUMBERLAND RIVER AT NASHVILLE, TN",
"unit": "ft3/s",
"value": 9530
},
"disclaimer": "Advisory only, provided as is without warranty of accuracy or completeness. Gauge data is provisional and subject to revision by USGS. Never rely on this for flood safety decisions — consult official …",
"gageHeight": {
"observedAt": "2026-09-17T10:30:00.000-05:00",
"siteName": "CUMBERLAND RIVER AT NASHVILLE, TN",
"unit": "ft",
"value": 17.29
},
"historicalMedianForToday": 7850,
"query": {
"site": "03431500"
},
"reasons": [
"CUMBERLAND RIVER AT NASHVILLE, TN: 9,530 ft3/s discharge, gauge height 17.29 ft.",
"121% of the historical median for this calendar day (7,850 cfs over 16 years of record)."
],
"retrievedAt": "2026-09-17T16:24:44.671Z",
"siteName": "CUMBERLAND RIVER AT NASHVILLE, TN",
"source": "USGS Water Services (waterservices.usgs.gov)",
"verdict": "NORMAL",
"yearsOfRecord": 16
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"site": {
"description": "USGS site number, e.g. 03431500",
"type": "string"
}
},
"required": [
"site"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"discharge": {
"properties": {
"observedAt": {
"type": [
"null",
"string"
]
},
"siteName": {
"type": [
"null",
"string"
]
},
"unit": {
"type": [
"null",
"string"
]
},
"value": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"gageHeight": {
"properties": {
"observedAt": {
"type": [
"null",
"string"
]
},
"siteName": {
"type": [
"null",
"string"
]
},
"unit": {
"type": [
"null",
"string"
]
},
"value": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"historicalMedianForToday": {
"type": [
"null",
"number"
]
},
"query": {
"properties": {
"site": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"retrievedAt": {
"type": [
"null",
"string"
]
},
"siteName": {
"type": [
"null",
"string"
]
},
"source": {
"type": [
"null",
"string"
]
},
"statisticsChecked": {
"type": "boolean"
},
"verdict": {
"type": [
"null",
"string"
]
},
"yearsOfRecord": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-20T13:36:55.675Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-20T13:36:55.335Z"
},
"resource": "https://loonie-toll.onrender.com/streamflow",
"serviceName": "ClearCheck",
"tags": [
"government-data",
"compliance",
"verification",
"public-records",
"risk-screening"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Live streamflow for a USGS gauge with a HIGH / NORMAL / LOW verdict vs the site's own median for this day of year."
}What the leaf hashes
{"body":"720ed96a8ac429afa35a9d792c3f62357e6d1f55e02f31d1b46c442c6e712886","id":77232,"kind":"listing","method":"baseline/1","observed_us":1793025493493308,"prev":null,"subject":"x402_bazaar:https://loonie-toll.onrender.com/streamflow","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).
- 0xe4195f78ec2612a15615858569d4308b199b0900e1d6cfb202810ff5a22c61ae
- 0x7e278ba19b66f64268f239968d3f55dbd626af53f2e2ea4c2e0b77d896a4f3b1
- 0x425c98b50ea209458da098e3d9142e5eea5bc9d75a76dedd3bb2f79c8e9fb1a3
- 0xaba30e8cf66a7d8503a426ead0c38dcb65d34e607ae61243ffdfb50bd09c0295
- 0x65643ce81a8a437c018ee492d0ea1ca8ce4b93f37001fba03084832218b46074
- 0xc2a49c457c9afeab78520511c4aef0b55498b1ce6b1bd065a4706cee649b422c
- 0xfbc73f09f448cd51bc9b1b63c006cdb6d8cf665e0d4fb9a190191db266e69baa
- 0xef83bea5e8b70f345bff72e370234bbbe5a17ab662cbc06ac11ca3543f4eeb03
- 0x444a7376940e2830bf72adff90bc8741426d1d746343c45469f2b29d6ccebab3
- 0x15726dc36d12291b4937cc1d22f325d4939ad46dd10d4e44468a88a8cc8329ed
- 0x162e0da99198c9cdc9c43bf4626e85f4a7092fdb31ea15c7126e1f98b20eaa56
- 0x2fc38b57208d692aab1ee89b6e26917df292126314027c27360c5644a63fd0bc
- 0xc0924a0807e534382f518663123231c317124338831a2b310de2c17b09677086
- 0x9bc5fc98278b9f6dc18c66c6e162aefd5244be03170d41bc5161f58ad11beed7
- 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
- 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
- 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae