← The evidence ledger
Evidence row 76620
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://imf-datamapper-series.x402supply.com/tools/get_series
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- ff24ea295b34c139eb5e1472b2a362bca39dcd47909a7a9abf5622155383f878
- Leaf
- 0x11f5ea55cf2ee3d9d8e2ca261dc449e3a90970036f0eaa27b005593c836699ba
What was observed
{
"endpoints": [
[
"x402",
"https://imf-datamapper-series.x402supply.com/tools/get_series"
]
],
"name": "imf-datamapper-series.x402supply.com/tools/get_series",
"owner_address": "0x07ffb5044cf2cd4352be4655f578d0ba8cb754eb",
"raw": {
"accepts": [
{
"amount": "5000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"outputSchema": {
"input": {
"additionalProperties": false,
"properties": {
"countries": {
"description": "Comma-separated IMF country codes (ISO alpha-3), e.g. USA,DEU,JPN. Up to 20",
"maxLength": 200,
"minLength": 2,
"type": "string"
},
"endYear": {
"description": "Last year to include",
"maximum": 2100,
"minimum": 1980,
"type": "integer"
},
"indicator": {
"description": "IMF indicator code, e.g. NGDP_RPCH. Find codes with search_indicators",
"maxLength": 40,
"minLength": 1,
"pattern": "^[A-Za-z0-9_.]+$",
"type": "string"
},
"startYear": {
"description": "First year to include",
"maximum": 2100,
"minimum": 1980,
"type": "integer"
}
},
"required": [
"indicator",
"countries"
],
"type": "object"
},
"output": {
"properties": {
"asOf": {
"type": "string"
},
"dataset": {
"type": [
"string",
"null"
]
},
"forecast_flag": {
"type": "boolean"
},
"forecast_from_year": {
"type": "integer"
},
"indicator": {
"type": "string"
},
"label": {
"type": "string"
},
"missingCountries": {
"items": {
"type": "string"
},
"type": "array"
},
"publication": {
"type": [
"string",
"null"
]
},
"series": {
"items": {
"properties": {
"country": {
"type": "string"
},
"name": {
"type": [
"string",
"null"
]
},
"points": {
"items": {
"properties": {
"forecast_flag": {
"type": "boolean"
},
"value": {
"type": "number"
},
"year": {
"type": "integer"
}
},
"required": [
"year",
"value",
"forecast_flag"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"country",
"name",
"points"
],
"type": "object"
},
"type": "array"
},
"source": {
"items": {
"type": "string"
},
"type": "array"
},
"unit": {
"type": [
"string",
"null"
]
}
},
"required": [
"indicator",
"label",
"unit",
"forecast_from_year",
"forecast_flag",
"series",
"missingCountries",
"source",
"asOf"
],
"type": "object"
}
},
"version": "2"
},
"maxTimeoutSeconds": 60,
"network": "eip155:8453",
"payTo": "0x07fFB5044cF2Cd4352Be4655f578D0ba8cb754EB",
"scheme": "exact"
}
],
"description": "Returns one IMF DataMapper indicator (e.g. NGDP_RPCH real GDP growth) for one or more countries, optionally limited to a year range. Output has unit, per-country series of {year, value, forecast_flag}, and a top-level forecast_flag. A point is a forecast when year >= the current UTC year.",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"countries": "USA",
"endYear": 2026,
"indicator": "NGDP_RPCH",
"startYear": 2024
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"asOf": "2026-10-08 14:43:32",
"dataset": "WEO",
"forecast_flag": true,
"forecast_from_year": 2026,
"indicator": "NGDP_RPCH",
"label": "Real GDP growth",
"missingCountries": [],
"publication": "World Economic Outlook (October 2026)",
"series": [
{
"country": "USA",
"name": "United States",
"points": [
{
"forecast_flag": false,
"value": 3,
"year": 2024
},
{
"forecast_flag": false,
"value": 2.3,
"year": 2025
},
{
"forecast_flag": true,
"value": 2.3,
"year": 2026
}
]
}
],
"source": [
"https://www.imf.org/external/datamapper/api/v1/NGDP_RPCH",
"https://www.imf.org/external/datamapper/api/v1/indicators"
],
"unit": "Annual percent change"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"countries": {
"description": "Comma-separated IMF country codes (ISO alpha-3), e.g. USA,DEU,JPN. Up to 20",
"maxLength": 200,
"minLength": 2,
"type": "string"
},
"endYear": {
"description": "Last year to include",
"maximum": 2100,
"minimum": 1980,
"type": "integer"
},
"indicator": {
"description": "IMF indicator code, e.g. NGDP_RPCH. Find codes with search_indicators",
"maxLength": 40,
"minLength": 1,
"pattern": "^[A-Za-z0-9_.]+$",
"type": "string"
},
"startYear": {
"description": "First year to include",
"maximum": 2100,
"minimum": 1980,
"type": "integer"
}
},
"required": [
"indicator",
"countries"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-15T12:23:22.671Z",
"quality": {
"l30DaysTotalCalls": 1,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-15T12:23:22.133Z"
},
"resource": "https://imf-datamapper-series.x402supply.com/tools/get_series",
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Returns one IMF DataMapper indicator (e.g. NGDP_RPCH real GDP growth) for one or more countries, optionally limited to a year range. Output has unit, per-country series of {year, value, forecast_flag}, and a top-level forecast_flag. A point is a forecast when year >= the current UTC year."
}What the leaf hashes
{"body":"ff24ea295b34c139eb5e1472b2a362bca39dcd47909a7a9abf5622155383f878","id":76620,"kind":"listing","method":"baseline/1","observed_us":1793025492514560,"prev":null,"subject":"x402_bazaar:https://imf-datamapper-series.x402supply.com/tools/get_series","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
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- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae