1 · Register as partner

2 · Try the rights check (sandbox)

3 · API reference (sandbox)

POST /api/method/copyright.api.partner_api.rights_check
Headers: Content-Type: application/json
Body:    { "content": "<text to check>" }
→       { "matches": [ { "work", "title", "confidence",
                         "rights_basis", "license_status" } ] }