← The evidence ledger
Evidence row 66076
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://api.duoleads.com/v1/code/semver
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 45e8f4911d51879550c2865c92efa2bee7b5491ca157a63616eeee6e4446cdca
- Leaf
- 0x789cbe01c39b80f6b8a0ffb493c7dc3ca926c12aea18df207a255f330a500644
What was observed
{
"endpoints": [
[
"x402",
"https://api.duoleads.com/v1/code/semver"
]
],
"name": "Duo Data Utilities",
"owner_address": "0xcd673f7e1dad254347aeab6be0defe8b9c6b3a39",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 120,
"network": "eip155:8453",
"payTo": "0xCD673f7e1daD254347AEab6be0DEFe8b9C6b3A39",
"scheme": "exact"
}
],
"description": "Parse a semantic version into major, minor, patch, prerelease and build parts; compare two versions by precedence including prerelease ordering; or test whether a version satisfies a range expression using caret, tilde, hyphen, x-ranges and comparator sets. Returns the parsed structure, the comparison result and the reason a range did not match.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"version": "1.2.3-rc.1+build.5"
},
"type": "http"
},
"output": {
"example": {
"data": {
"build": [
"build",
"5"
],
"canonical": "1.2.3-rc.1+build.5",
"is_prerelease": true,
"major": 1,
"minor": 2,
"patch": 3,
"prerelease": [
"rc",
1
],
"reason": null,
"valid": true
},
"meta": {
"computed_at": "2026-09-28T12:00:00.000Z",
"deterministic": true,
"disclaimer": "Factual output of a deterministic computation over public data. Provided as is, with no warranty of accuracy, completeness or availability. Not investment, financial, legal, tax, medical or any other professional advice, and not a recommendation. Verify before relying on it. Terms: https://api.duoleads.com/terms",
"price_usd": "0.05",
"request_id": "01K6B7Q4ZC8H3F2M9WXR5TYN0D"
},
"ok": true,
"route": "/v1/code/semver",
"version": "1.0.0"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"a": {
"description": "First version for op=compare.",
"maxLength": 256,
"type": "string"
},
"b": {
"description": "Second version for op=compare.",
"maxLength": 256,
"type": "string"
},
"op": {
"default": "parse",
"description": "parse (default), compare, satisfies or sort.",
"enum": [
"parse",
"compare",
"satisfies",
"sort"
],
"maxLength": 64,
"type": "string"
},
"range": {
"description": "Range expression for op=satisfies, e.g. ^1.2.0.",
"maxLength": 256,
"type": "string"
},
"version": {
"description": "Version to parse (op=parse) or test (op=satisfies).",
"maxLength": 256,
"type": "string"
},
"versions": {
"description": "Comma-separated versions for op=sort, at most 100.",
"maxLength": 2048,
"type": "string"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"data": {
"properties": {
"a": {
"type": "string"
},
"b": {
"type": "string"
},
"build": {
"items": {
"type": "string"
},
"type": "array"
},
"canonical": {
"type": [
"string",
"null"
]
},
"comparators": {
"items": {
"type": "string"
},
"type": "array"
},
"invalid": {
"items": {
"type": "string"
},
"type": "array"
},
"is_prerelease": {
"type": "boolean"
},
"major": {
"type": [
"integer",
"null"
]
},
"minor": {
"type": [
"integer",
"null"
]
},
"patch": {
"type": [
"integer",
"null"
]
},
"precedence_note": {
"type": "string"
},
"prerelease": {
"items": {
"type": [
"number",
"string"
]
},
"type": "array"
},
"range": {
"type": "string"
},
"reason": {
"type": [
"string",
"null"
]
},
"result": {
"type": "integer"
},
"satisfies": {
"type": "boolean"
},
"sorted": {
"items": {
"type": "string"
},
"type": "array"
},
"valid": {
"type": "boolean"
}
},
"type": "object"
},
"meta": {
"properties": {
"computed_at": {
"description": "RFC 3339 UTC with milliseconds",
"type": "string"
},
"deterministic": {
"type": "boolean"
},
"disclaimer": {
"type": "string"
},
"price_usd": {
"type": "string"
},
"request_id": {
"type": "string"
},
"sources": {
"items": {
"required": [
"id",
"version",
"published"
],
"type": "object"
},
"type": "array"
}
},
"required": [
"request_id",
"computed_at",
"price_usd",
"deterministic",
"disclaimer"
],
"type": "object"
},
"ok": {
"const": true
},
"route": {
"const": "/v1/code/semver"
},
"version": {
"type": "string"
}
},
"required": [
"ok",
"route",
"version",
"data",
"meta"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-01T20:52:07.628Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 1,
"lastCalledAt": "2026-10-01T20:52:07.511Z"
},
"resource": "https://api.duoleads.com/v1/code/semver",
"serviceName": "Duo Data Utilities",
"tags": [
"deterministic",
"no-api-key",
"code",
"versions",
"semver"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Parse a semantic version into major, minor, patch, prerelease and build parts; compare two versions by precedence including prerelease ordering; or test whether a version satisfies a range expression using caret, tilde, hyphen, x-ranges and comparator sets. Returns the parsed structure, the comparison result and the reason a range did not match."
}What the leaf hashes
{"body":"45e8f4911d51879550c2865c92efa2bee7b5491ca157a63616eeee6e4446cdca","id":66076,"kind":"listing","method":"baseline/1","observed_us":1793025459652548,"prev":null,"subject":"x402_bazaar:https://api.duoleads.com/v1/code/semver","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.