PleaseSign records a comprehensive log of all transactions that occur between signing parties. To provide you with a court-admissible transaction history, we record and time-stamp all events that occur from the moment a document is created, to when it’s filled out and signed by all parties. To ensure this transaction history is verifiable, we process each event with a cryptographic hash function called a checksum to confirm the existing transaction history has not been tampered with and to securely record the new event.