One-Shot is the solution for electronic signatures based on single-use certificate issuance. One-Shot API is the interface for the Uanataca One-Shot Signature service, which you can integrate into your application or web platform.
Only hashes of the documents to be signed are sent to the signature service; no sensitive document content leaves your premises. Documents are signed using single-use digital certificates created at the moment of the signature operation. Signatures include a timestamp, providing a reliable date and time.
Get started — Prerequisites, sandbox access, RAO tokens, architecture, and signing flow. See Get started, Architecture, and Signing flow.
Products and modules — Workflows: classic (OTP/SMS), hash signature, asynchronous mode, and VideoID (eIDAS and External). See Workflows overview.
Developer documentation — API reference (OpenAPI), webhooks, configuration, Docker installation, Postman. See Developer documentation overview and API reference.
Administrator guides — Operator and RA configuration. See Administrator guides overview.
End-user FAQs, manuals, documents, and service. See Customer documentation.