Disclosed herein is a computer-implemented method for preparation of an electronic document with a plurality of signing users, comprising associating an unsigned, encrypted document with at least a first authenticated user code for a first signing user and a second authenticated user code for a second signing user, sending the document to the signing users, decrypting the document; generating a first electronic signature from the first signing user's authenticated user code and a second electronic signature from the second signing user's authenticated user code, appending signatures to the document, duplicating the document and assigning ownership separately for each signing user, encrypting each signed document, and transferring the signed and encrypted documents to electronic vaults associated with the signing users.