← The evidence ledger
Evidence row 2201584
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://math-stats.x402tookit.com/ab-test
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- f16a7f8f9940bfb6537e8c0d0ed4a2e198a5d58fa1f178a94db556ac637319c5
- Leaf
- 0x62965cb254a7f529d61558df520f333bf06deacaa80b18ceee6df27d20a29c46
What was observed
{
"endpoints": [
[
"x402",
"https://math-stats.x402tookit.com/ab-test"
]
],
"name": "Math and Statistics",
"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": "A/B conversion test: rates, relative lift, two-proportion z-test p-value, confidence interval and a significance verdict.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"conversionsA": 200,
"conversionsB": 250,
"visitorsA": 1000,
"visitorsB": 1000
},
"type": "http"
},
"output": {
"example": {
"alpha": 0.05,
"asOf": "2026-10-11T06:26:05.559Z",
"confidenceIntervalPoints": {
"level": 0.95,
"lower": 1.346362169,
"upper": 8.653637831
},
"degraded": false,
"differencePoints": 5,
"disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
"enoughConversions": true,
"notChecked": [
"whether the test ran long enough or was stopped early after peeking (peeking inflates false positives)",
"whether users were randomly assigned and counted once",
"…3 more"
],
"pValueTwoSided": 0.0074196493,
"pooledRate": 0.225,
"rateA": 0.2,
"rateB": 0.25,
"reasons": [
"Enough conversions for the normal approximation.",
"Pooled two-proportion z-test, two-sided. Do not stop the moment p dips below alpha: decide the sample size in advance.",
"…1 more"
],
"relativeLiftPct": 25,
"significant": true,
"source": "computed locally",
"summary": "A 20% (200/1000) vs B 25% (250/1000): +5 points (+25% relative), z = 2.677, p = 0.0074 -> significant at alpha 0.05.",
"verdict": "B_WINS_SIGNIFICANT",
"zStatistic": 2.677397763
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"alpha": {
"description": "Significance level 0.001 to 0.2 (default 0.05)",
"type": "number"
},
"conversionsA": {
"description": "Conversions in A",
"type": "number"
},
"conversionsB": {
"description": "Conversions in B",
"type": "number"
},
"visitorsA": {
"description": "Visitors in A (control)",
"type": "number"
},
"visitorsB": {
"description": "Visitors in B (variant)",
"type": "number"
}
},
"required": [
"visitorsA",
"conversionsA",
"visitorsB",
"conversionsB"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"alpha": {
"type": [
"null",
"number"
]
},
"asOf": {
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"null",
"string"
]
},
"confidenceIntervalPoints": {
"properties": {
"level": {
"type": [
"null",
"number"
]
},
"lower": {
"type": [
"null",
"number"
]
},
"upper": {
"type": [
"null",
"number"
]
}
},
"type": [
"null",
"object"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"differencePoints": {
"type": [
"null",
"number"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"enoughConversions": {
"type": [
"boolean",
"null"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"pValueTwoSided": {
"type": [
"null",
"number"
]
},
"pooledRate": {
"type": [
"null",
"number"
]
},
"rateA": {
"type": [
"null",
"number"
]
},
"rateB": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"relativeLiftPct": {
"type": [
"null",
"number"
]
},
"significant": {
"type": [
"boolean",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
},
"zStatistic": {
"type": [
"null",
"number"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-01T23:37:48.051Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-01T23:37:47.786Z"
},
"resource": "https://math-stats.x402tookit.com/ab-test",
"serviceName": "Math and Statistics",
"tags": [
"ab-test",
"conversion",
"experiment",
"statistics"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "A/B conversion test: rates, relative lift, two-proportion z-test p-value, confidence interval and a significance verdict."
}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