← The evidence ledger
Evidence row 2201940
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://electronics-calc.x402tookit.com/rc-filter
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- a86feff6130e877ececd585cf2bbd1c142341da257ffde10eec21d71ec1bb758
- Leaf
- 0x27f6413871f3dc5655a52200750e9451dd9a5df5ada84947a7a920ba74445b9c
What was observed
{
"endpoints": [
[
"x402",
"https://electronics-calc.x402tookit.com/rc-filter"
]
],
"name": "Electronics 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": "RC filter cutoff frequency, time constant and charge times to 63%, 90% and 99% from resistance and capacitance.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"capacitance": "100n",
"resistance": "10k"
},
"type": "http"
},
"output": {
"example": {
"angularCutoffRadS": 1000,
"asOf": "2026-10-11T08:33:12.513Z",
"capacitanceF": 1.0000000000000001e-7,
"chargeTimesS": {
"p632": 0.001,
"p90": 0.0023025851,
"p95": 0.0029957323,
"p99": 0.0046051702,
"p999": 0.0069077553
},
"cutoffHz": 159.15494,
"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.",
"formatted": {
"cutoff": "159.2 Hz",
"tau": "1 ms"
},
"notChecked": [
"source and load impedance (they shift the real cutoff)",
"capacitor tolerance, ESR and voltage derating",
"…1 more"
],
"reasons": [
"Cutoff fc = 1 / (2 pi R C): a low-pass passes below it and a high-pass passes above it, -20 dB per decade.",
"Charge to 63.2% in 1 tau, 86.5% in 2, 95% in 3, 98.2% in 4, 99.3% in 5."
],
"resistanceOhm": 10000,
"source": "computed locally",
"summary": "R=10 kohm, C=100 nF: time constant 1 ms, cutoff (-3 dB) 159.2 Hz; 99% charged in 4.605 ms.",
"timeConstantS": 0.001,
"verdict": "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": {
"capacitance": {
"description": "Farads, e.g. 100n, 2u2 or 0.000001",
"type": "string"
},
"resistance": {
"description": "Ohms, e.g. 10k",
"type": "string"
}
},
"required": [
"resistance",
"capacitance"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"angularCutoffRadS": {
"type": [
"null",
"number"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"capacitanceF": {
"type": [
"null",
"number"
]
},
"chargeTimesS": {
"properties": {
"p632": {
"type": [
"null",
"number"
]
},
"p90": {
"type": [
"null",
"number"
]
},
"p95": {
"type": [
"null",
"number"
]
},
"p99": {
"type": [
"null",
"number"
]
},
"p999": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"cutoffHz": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"formatted": {
"properties": {
"cutoff": {
"type": [
"null",
"string"
]
},
"tau": {
"type": [
"null",
"string"
]
}
},
"type": [
"null",
"object"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"resistanceOhm": {
"type": [
"null",
"number"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"timeConstantS": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:51:50.006Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:51:49.825Z"
},
"resource": "https://electronics-calc.x402tookit.com/rc-filter",
"serviceName": "Electronics Calculators",
"tags": [
"electronics",
"rc-filter",
"time-constant",
"capacitor"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "RC filter cutoff frequency, time constant and charge times to 63%, 90% and 99% from resistance and capacitance."
}What the leaf hashes
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Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af