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SignatureAPI organizes the document signing process around five core concepts:

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Envelope

An Envelope is a container that holds documents and recipients. It organizes and tracks the entire signing workflow from creation to completion.

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Documents

Documents are the files within an envelope that recipients need to review and sign. You can provide PDFs directly or generate documents from templates with dynamic data.

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Recipients

Recipients are the people who interact with the envelope. Each recipient has a type (signer, approver, or preparer) that determines what actions they can perform.

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Ceremony

A Ceremony is a guided session in which a recipient reviews the documents and performs their required actions, such as signing. Each recipient completes their own ceremony, and you can control the signing order (parallel or sequential).

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Deliverable

After all recipients have completed their actions, the envelope is completed. A Deliverable is then generated, containing the signed documents and an audit log. The deliverable is sent to the recipients and is available for download via the API.