The Audit Signature ID # is another advanced tamper resistant feature included in the WordPress eSignature Audit Trail, which protects you and your signers. The audit trail and event log is comprised of timezone relevant timestamps, signer activity & event logs, user ip address, legal name and the users email address.
Once a document is marked as closed (all signatory parties have added their electronic signatures to the contract), the audit signature id # will get generated in the footer of the document.
This particular serial number is comprised of the document events and audit trail data related to this particular document.
Once the document is closed all parties will receive an email with the audit signature id # in the email body.
If ANY of the event data is EVER manipulated in the database, the audit trail serial number will instantly be updated. If the audit trail serial number does not match the serial number in the emails that were sent out and in the footer of the originally completed document, you can have reason to suspect document tampering.