← The evidence ledger
Evidence row 2201273
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://sports-calc.x402tookit.com/betting-odds
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- b6006fc0e6333e646543fbeb0c5793c39103798f43d251f25b699d4cc2f91867
- Leaf
- 0x4235cdcff3f0056b1b22ffa8165a40a2038ad7e344ab7b7ada506fd1ca9f7df6
What was observed
{
"endpoints": [
[
"x402",
"https://sports-calc.x402tookit.com/betting-odds"
]
],
"name": "Sports 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": "Convert American, decimal, fractional odds and probability; add the other side for margin, or your own chance for Kelly.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"format": "american",
"odds": "-110",
"otherSideOdds": "-110"
},
"type": "http"
},
"output": {
"example": {
"american": "-110",
"asOf": "2026-10-11T14:34:05.276Z",
"bookmakerMarginPct": 4.7619,
"decimal": 1.909091,
"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.",
"fractional": "0.90909/1",
"impliedProbability": 0.5238095,
"noVigProbability": 0.5,
"noVigProbabilityOtherSide": 0.5,
"notChecked": [
"whether any bet is wise, legal where you are, or available: this is arithmetic only",
"the true probability of any outcome: implied probability includes the bookmaker margin",
"…1 more"
],
"otherSideDecimal": 1.909091,
"otherSideImplied": 0.5238095,
"overround": 1.047619,
"profitPer100Stake": 90.9091,
"reasons": [
"Implied probability = 1 / decimal odds and includes the bookmaker's margin unless removed with the other side.",
"Kelly fraction f = (b p - q) / b, where b is the net decimal payout, p your probability, q = 1 - p."
],
"source": "computed locally",
"summary": "Decimal 1.9091 = American -110; implied probability 52.38%. Two-way book totals 104.76% (margin 4.76%); no-vig probability 50%.",
"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": {
"format": {
"description": "american, decimal, fractional or probability",
"type": "string"
},
"odds": {
"description": "The odds, e.g. -110, 2.5, 5/2 or 0.4",
"type": "string"
},
"otherSideOdds": {
"description": "Odds of the opposing outcome in the same format, to measure the bookmaker margin",
"type": "string"
},
"yourProbability": {
"description": "Your own win probability 0 to 1, for the Kelly fraction",
"type": "number"
}
},
"required": [
"odds",
"format"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"american": {
"type": [
"null",
"string"
]
},
"asOf": {
"type": [
"null",
"string"
]
},
"bookmakerMarginPct": {
"type": [
"null",
"number"
]
},
"decimal": {
"type": [
"null",
"number"
]
},
"degraded": {
"type": [
"boolean",
"null"
]
},
"disclaimer": {
"type": [
"null",
"string"
]
},
"fractional": {
"type": [
"null",
"string"
]
},
"impliedProbability": {
"type": [
"null",
"number"
]
},
"noVigProbability": {
"type": [
"null",
"number"
]
},
"noVigProbabilityOtherSide": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"otherSideDecimal": {
"type": [
"null",
"number"
]
},
"otherSideImplied": {
"type": [
"null",
"number"
]
},
"overround": {
"type": [
"null",
"number"
]
},
"profitPer100Stake": {
"type": [
"null",
"number"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"source": {
"type": [
"null",
"string"
]
},
"summary": {
"type": [
"null",
"string"
]
},
"verdict": {
"type": [
"null",
"string"
]
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-11-02T04:06:47.282Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-11-02T04:06:46.999Z"
},
"resource": "https://sports-calc.x402tookit.com/betting-odds",
"serviceName": "Sports Calculators",
"tags": [
"odds",
"probability",
"kelly",
"overround"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Convert American, decimal, fractional odds and probability; add the other side for margin, or your own chance for Kelly."
}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