← The evidence ledger
Evidence row 2201177
Observed , by sync.x402_bazaar/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://time-series-calc.x402tookit.com/forecast-accuracy
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 7e3ad54a80c5a0c92d6a54be5db898812c4f749f7fda7a0d8cc18d4f9d29be4b
- Leaf
- 0x0cea40b648dce7178b31fa9b90dc1498184f4695516d7e749c540cfcf091fa0e
What was observed
{
"endpoints": [
[
"x402",
"https://time-series-calc.x402tookit.com/forecast-accuracy"
]
],
"name": "Time Series 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": "Score a forecast against actuals: MAE, RMSE, MAPE, sMAPE, bias and MASE against a naive benchmark.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"actual": "3,5,2,7",
"forecast": "2,5,4,8",
"training": "1,3,2,5,4"
},
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-21T06:18:22.688Z",
"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.",
"errors": [
1,
0
],
"mae": 1,
"mapePct": 36.9047619,
"mase": 0.571428571,
"meanError": -0.5,
"mse": 1.5,
"n": 4,
"naiveLag": 1,
"naiveScale": 1.75,
"notChecked": [
"statistical significance of the difference between two forecasts",
"forecast intervals or calibration",
"…1 more"
],
"reasons": [
"error e = actual - forecast; bias = mean(e) (positive means forecasts too low).",
"MASE = MAE / mean absolute one-step (or seasonal) naive error on the history; below 1 beats the naive forecast."
],
"rmse": 1.22474487,
"smapePct": 30,
"source": "computed locally (Hyndman and Koehler 2006, Another look at measures of forecast accuracy)",
"summary": "Over 4 points: MAE 1, RMSE 1.22474, MAPE 36.9048%, MASE 0.571429.",
"verdict": "BEATS_NAIVE"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"actual": {
"description": "Comma-separated actual values (1 to 500), any one unit",
"type": "string"
},
"forecast": {
"description": "Comma-separated forecast values, same length and unit as actual",
"type": "string"
},
"seasonLength": {
"description": "Seasonal naive lag in observations for MASE (default 1 = last value)",
"type": "integer"
},
"training": {
"description": "Comma-separated earlier history in the same unit, for the MASE scale (default: the actual series itself)",
"type": "string"
}
},
"required": [
"actual",
"forecast"
],
"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"
]
},
"errors": {
"items": {
"type": "number"
},
"type": [
"array",
"null"
]
},
"mae": {
"type": [
"null",
"number"
]
},
"mapePct": {
"type": [
"null",
"number"
]
},
"mase": {
"type": [
"null",
"number"
]
},
"meanError": {
"type": [
"null",
"number"
]
},
"mse": {
"type": [
"null",
"number"
]
},
"n": {
"type": [
"null",
"number"
]
},
"naiveLag": {
"type": [
"null",
"number"
]
},
"naiveScale": {
"type": [
"null",
"number"
]
},
"notChecked": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"reasons": {
"items": {
"type": "string"
},
"type": [
"array",
"null"
]
},
"rmse": {
"type": [
"null",
"number"
]
},
"smapePct": {
"type": [
"null",
"number"
]
},
"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": "2026-11-02T04:09:45.978Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-11-02T04:09:45.837Z"
},
"resource": "https://time-series-calc.x402tookit.com/forecast-accuracy",
"serviceName": "Time Series Calculators",
"tags": [
"forecast",
"accuracy",
"mape",
"mase"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Score a forecast against actuals: MAE, RMSE, MAPE, sMAPE, bias and MASE against a naive benchmark."
}What the leaf hashes
{"body":"7e3ad54a80c5a0c92d6a54be5db898812c4f749f7fda7a0d8cc18d4f9d29be4b","id":2201177,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646801190646,"prev":null,"subject":"x402_bazaar:https://time-series-calc.x402tookit.com/forecast-accuracy","subject_kind":"source_record"}Proof
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- Day root
- 0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
- Chained
- 0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
- Published
- On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af