Compare one supplied DOI across Crossref and DataCite and return bounded, attributed open-
Compare one supplied DOI across Crossref and DataCite and return bounded, attributed open-metadata agreement evidence.
12000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-01
updated
Provider
foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.dev · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x25e8245f07d5e4873987293dad666afbe56a9608",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "12000",
"maxTimeoutSeconds": 60
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"doi": "10.5555/example"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"caveats": [
"Open metadata evidence only; not peer-review, identity, authorship, originality or legal verification.",
"Source absence or disagreement must not be interpreted as fraud or invalidity."
],
"disposition": "CONFIRMED",
"evidenceFingerprint": "0000000000000000000000000000000000000000000000000000000000000000",
"matches": {
"doi": true,
"title": true,
"year": true
},
"product": "open-scholarly-evidence",
"queriedDoi": "10.5555/example",
"sources": [
{
"doi": "10.5555/example",
"source": "crossref",
"status": "FOUND",
"title": "Evidence: A Study",
"type": "journal-article",
"year": 2026
},
{
"doi": "10.5555/example",
"source": "datacite",
"status": "FOUND",
"title": "Evidence - A Study",
"type": "JournalArticle",
"year": 2026
}
],
"version": "1.0.0"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"doi": {
"maxLength": 512,
"minLength": 6,
"type": "string"
}
},
"required": [
"doi"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": false,
"properties": {
"caveats": {
"items": {
"type": "string"
},
"type": "array"
},
"disposition": {
"enum": [
"CONFIRMED",
"PARTIAL",
"CONFLICT",
"UNAVAILABLE"
],
"type": "string"
},
"evidenceFingerprint": {
"pattern": "^[0-9a-f]{64}$",
"type": "string"
},
"matches": {
"additionalProperties": false,
"properties": {
"doi": {
"type": [
"boolean",
"null"
]
},
"title": {
"type": [
"boolean",
"null"
]
},
"year": {
"type": [
"boolean",
"null"
]
}
},
"required": [
"doi",
"title",
"year"
],
"type": "object"
},
"product": {
"const": "open-scholarly-evidence",
"type": "string"
},
"queriedDoi": {
"type": "string"
},
"sources": {
"items": {
"additionalProperties": false,
"properties": {
"doi": {
"type": [
"string",
"null"
]
},
"source": {
"enum": [
"crossref",
"datacite"
],
"type": "string"
},
"status": {
"enum": [
"FOUND",
"NOT_FOUND",
"UNAVAILABLE",
"INVALID_RESPONSE"
],
"type": "string"
},
"title": {
"type": [
"string",
"null"
]
},
"type": {
"type": [
"string",
"null"
]
},
"year": {
"type": [
"integer",
"null"
]
}
},
"required": [
"source",
"status",
"doi",
"title",
"year",
"type"
],
"type": "object"
},
"maxItems": 2,
"minItems": 2,
"type": "array"
},
"version": {
"const": "1.0.0",
"type": "string"
}
},
"required": [
"product",
"version",
"queriedDoi",
"disposition",
"matches",
"sources",
"evidenceFingerprint",
"caveats"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.dev/v1/scholarly/evidence" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.dev/v1/scholarly/evidence");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://foundry-open-scholarly-evidence-mainnet.inference-chip-index.workers.dev/v1/scholarly/evidence")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/8355.json, and this resource appears in /discovery/resources and /discovery/search.