In the current system, a notary is responsible for witnessing that the sides are willing to sign an agreement with their own will, while being conscious, of sound mind, and so forth. That’s why it’s still necessary to visit a notary public in order to transfer a title, declare power of attorney, and perform other similar activities.
What Aleph Zero is doing
However, with the technology we already have, it can be done 100% online with a simple video call that would be recorded on a secure, decentralized ledger and stored there as a file, together with the information about the transaction and the identities of the people involved. It could be then accessed at any point in time if any doubt occurs.
Such a solution could eventually replace the need for notary publics, but before it can be achieved, the new system would have to ensure that the transaction and the parties involved are honest. This is a complex problem that could be solved by utilizing Aleph Zero, Image Recognition, AI, and other means.