← The evidence ledger
Evidence row 2201285
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://garden-calc.x402tookit.com/drip-irrigation
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 6fc819e3902336eff42eccb67c74c55a2d715eb11c71cc65b2bb9bd2dfd77a51
- Leaf
- 0xa1bdfc6da644b547012ab85811edabf502fe83eadcab77b32e9edd3ee653a757
What was observed
{
"endpoints": [
[
"x402",
"https://garden-calc.x402tookit.com/drip-irrigation"
]
],
"name": "Garden 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": "Drip irrigation math: gallons for inches of water over an area, emitter flow, supply limit and run time per watering.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"areaSqFt": 100,
"emitterCount": 25,
"emitterGph": 1,
"inchesPerWeek": 1,
"supplyGpm": 5,
"wateringsPerWeek": 3
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-11T20:20:02.470Z",
"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.",
"efficiencyPercent": 90,
"gallonsPerSqFtPerInch": 0.6234,
"gallonsPerWatering": 23.1,
"hoursPerWatering": 0.92,
"hoursPerWeek": 2.77,
"inchesPerHourApplied": 0.3609,
"maxEmittersOnThisSupply": 240,
"minutesPerWatering": 55,
"notChecked": [
"rain: subtract the rain that fell (a 1 inch a week target includes rainfall)",
"soil type, plant size and weather, which change the real need by a factor of two or more across the season",
"…2 more"
],
"reasons": [
"1 inch of water over 1 square foot is 144 cubic inches = 0.6234 gallons.",
"Run time = water per watering / system flow; keep a zone's flow under 80% of the measured supply flow."
],
"source": "computed locally",
"summary": "100 sq ft at 1 inch a week needs 62.3 gallons (69.3 with 10% losses). 25 emitters at 1 gph deliver 25 gph, so 3 waterings take about 55 minutes each. The 0.42 gpm system fits within 80% of the 5 gpm s…",
"supplyGpm": 5,
"systemFlowGph": 25,
"systemFlowGpm": 0.417,
"systemFlowWithinSupply": true,
"usableSupplyGpmAt80Percent": 4,
"verdict": "COMPUTED",
"wateringsPerWeek": 3,
"weeklyLitres": 262,
"weeklyWaterGallons": 62.3,
"weeklyWaterGallonsAfterLosses": 69.3
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"areaSqFt": {
"description": "Area to water in square feet, 1 to 1,000,000",
"type": "number"
},
"efficiencyPercent": {
"description": "Share of the water that reaches the root zone, 50 to 100 (default 90 for drip)",
"type": "number"
},
"emitterCount": {
"description": "Number of emitters, 1 to 5000",
"type": "integer"
},
"emitterGph": {
"description": "Flow of each emitter in gallons per hour, 0.1 to 60 (common drippers are 0.5, 1 and 2)",
"type": "number"
},
"inchesPerWeek": {
"description": "Water to apply per week in inches, 0.1 to 6 (about 1 inch a week is a common vegetable-garden target)",
"type": "number"
},
"supplyGpm": {
"description": "Measured flow of your faucet or zone in gallons per minute, to check the limit",
"type": "number"
},
"wateringsPerWeek": {
"description": "Waterings a week, 1 to 14 (default 3)",
"type": "integer"
}
},
"required": [
"areaSqFt",
"inchesPerWeek",
"emitterCount",
"emitterGph"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"asOf": {
"type": [
"null",
"string"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"efficiencyPercent": {
"type": [
"null",
"number"
]
},
"gallonsPerSqFtPerInch": {
"type": [
"null",
"number"
]
},
"gallonsPerWatering": {
"type": [
"null",
"number"
]
},
"hoursPerWatering": {
"type": [
"null",
"number"
]
},
"hoursPerWeek": {
"type": [
"null",
"number"
]
},
"inchesPerHourApplied": {
"type": [
"null",
"number"
]
},
"maxEmittersOnThisSupply": {
"type": [
"null",
"number"
]
},
"minutesPerWatering": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"supplyGpm": {
"type": [
"null",
"number"
]
},
"systemFlowGph": {
"type": [
"null",
"number"
]
},
"systemFlowGpm": {
"type": [
"null",
"number"
]
},
"systemFlowWithinSupply": {
"type": [
"boolean",
"null"
]
},
"usableSupplyGpmAt80Percent": {
"type": [
"null",
"number"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"wateringsPerWeek": {
"type": [
"null",
"number"
]
},
"weeklyLitres": {
"type": [
"null",
"number"
]
},
"weeklyWaterGallons": {
"type": [
"null",
"number"
]
},
"weeklyWaterGallonsAfterLosses": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T04:06:29.261Z",
"quality": {
"l30DaysTotalCalls": 3,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-02T04:06:29.029Z"
},
"resource": "https://garden-calc.x402tookit.com/drip-irrigation",
"serviceName": "Garden Calculators",
"tags": [
"garden",
"irrigation",
"drip",
"water",
"calculator"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Drip irrigation math: gallons for inches of water over an area, emitter flow, supply limit and run time per watering."
}What the leaf hashes
{"body":"6fc819e3902336eff42eccb67c74c55a2d715eb11c71cc65b2bb9bd2dfd77a51","id":2201285,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646803176657,"prev":null,"subject":"x402_bazaar:https://garden-calc.x402tookit.com/drip-irrigation","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).
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- 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884
- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af