4. Why does ADDX use MPC technology instead of the more common multi-sig wallet?

Access to clients’ digital assets is secured with MPC (multi-party computation) cryptography technology for the most robust and strongest protection for digital asset storage.  

Securing digital assets boils down to preventing attackers of gaining access to the private key. Traditional cryptocurrency exchanges utilise multi-signature wallets, in which corporate officers are responsible to protect their private keys and sign off on transactions. Multi-signature wallets have shown to be vulnerable and led to many instances of hacks. 

With MPC, no single private key exists at any point in time. Instead, the private key is broken up into separate key shares that are encrypted and divided among multiple parties. These parties will independently compute their parts using the private key share they hold to produce a signature without revealing the encryption to the other parties. This means there is never a time when the private key is formed in one place.