Each time a document is signed, a signed version
of the PDF is saved with the PDF. Each version is saved as append-only
so that it cannot be modified. All signatures and their corresponding
versions can be accessed from the Signatures panel.
In
the Signatures panel, select the signature, and choose View Signed
Version from the Option menu.
The previous version opens in a new PDF, with the version
information and the name of the signer in the title bar.
To return to the original document, choose the document
name from the Window menu.