← The evidence ledger
Evidence row 2201936
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://electronics-calc.x402tookit.com/wire-gauge
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 2aaee3f6592bdbc7f9f4ebe081274d8e8e23e16b2b694cc0fe3ac090b9a3265b
- Leaf
- 0xa0c33e7af0897bc0f2721f09743c48d259a606bfacf2e09abcb08c2823a2075a
What was observed
{
"endpoints": [
[
"x402",
"https://electronics-calc.x402tookit.com/wire-gauge"
]
],
"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": "AWG copper wire: diameter, area and resistance per km, the nearest AWG for an area, and voltage drop over a run.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"awg": 18,
"currentA": 2,
"lengthM": 10,
"supplyV": 12
},
"type": "http"
},
"output": {
"example": {
"areaMm2": 0.82305,
"asOf": "2026-10-11T08:33:13.563Z",
"awg": 18,
"basis": "solid annealed copper at 20 C (1.7241e-8 ohm metre)",
"copperResistanceOhmPer1000ft": 6.3849,
"copperResistanceOhmPerKm": 20.948,
"degraded": false,
"diameterInch": 0.040303,
"diameterMm": 1.0237,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"loopLengthM": 20,
"loopResistanceOhm": 0.418956,
"notChecked": [
"AMPACITY: this service does NOT say how much current a wire can safely carry. That depends on insulation, bundling, ambient temperature, and local electrical codes: use the code tables or a qualified …",
"aluminium or other conductors (copper only)",
"…2 more"
],
"note": null,
"powerLossW": 1.67582,
"reasons": [
"Diameter = 0.127 mm x 92^((36 - n) / 39). Lower AWG numbers are thicker wire.",
"Voltage drop uses the round-trip length (there and back). A common design target is under 3% drop.",
"…1 more"
],
"source": "computed locally",
"summary": "AWG 18: 1.024 mm (0.0403 in), 0.823 mm2, 20.95 ohm/km. 10 m out and back at 2 A drops 0.8379 V (6.98% of 12 V), wasting 1.68 W.",
"verdict": "COMPUTED",
"voltageDropPct": 6.983,
"voltageDropV": 0.837911
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"areaMm2": {
"description": "Cross-section in mm2 to find the nearest AWG",
"type": "number"
},
"awg": {
"description": "AWG number, -3 to 40 (use instead of areaMm2)",
"type": "integer"
},
"currentA": {
"description": "Current in amps for voltage drop",
"type": "number"
},
"lengthM": {
"description": "One-way run length in metres for voltage drop",
"type": "number"
},
"supplyV": {
"description": "Supply volts to express the drop as a percentage",
"type": "number"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"areaMm2": {
"type": [
"null",
"number"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"awg": {
"type": [
"null",
"number"
]
},
"basis": {
"type": [
"null",
"string"
]
},
"copperResistanceOhmPer1000ft": {
"type": [
"null",
"number"
]
},
"copperResistanceOhmPerKm": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"diameterInch": {
"type": [
"null",
"number"
]
},
"diameterMm": {
"type": [
"null",
"number"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"loopLengthM": {
"type": [
"null",
"number"
]
},
"loopResistanceOhm": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"note": {},
"powerLossW": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"voltageDropPct": {
"type": [
"null",
"number"
]
},
"voltageDropV": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T22:52:03.253Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T22:52:03.077Z"
},
"resource": "https://electronics-calc.x402tookit.com/wire-gauge",
"serviceName": "Electronics Calculators",
"tags": [
"electronics",
"awg",
"wire",
"voltage-drop"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "AWG copper wire: diameter, area and resistance per km, the nearest AWG for an area, and voltage drop over a run."
}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