Electronic signature audit trails for signed PDFs.

An audit trail is the answer to "can we prove this was signed?" — long after the document leaves your inbox. It records the lifecycle of a signing request so the signed PDF isn't just a file, but a file with an evidence record behind it.

For everyday business documents, that record is what makes a digital signature trustworthy when questions come up later.

NibSign captures the meaningful events for every document: who uploaded it, who it was sent to, when each signer opened it, when each field was completed, and when the document moved from partially signed to completed. Each event is timestamped and tied to the recipient.

When you upload a PDF, NibSign records the upload time and links the file to your account so every later event is traceable back to the original document.

Each time a signing link is emailed to a recipient, the audit trail logs the send so you can confirm the request actually went out — useful for support questions and reminders.

When a recipient opens the secure signing link and views the PDF, NibSign records the event with a timestamp, IP address, and user agent for that session.

As each signer finishes their fields, NibSign logs the completion event with a timestamp. For multi-signer documents, the next recipient is notified automatically.

Once every signer is done, NibSign assembles the final signed PDF, stores it in your dashboard, and emails a copy to every party. The completed document and its audit trail stay linked so the signing history is always one click away.