US, May 9, 2021 - (ACN Newswire) - Safekeeping of cryptocurrencies presents a challenge for institutions holding cryptocurrencies on their clients' behalf. Cryptocurrency transactions are irreversible and anyone with full access to a wallet's private key controls the cryptocurrencies that reside within it. Frighteningly, a number of institutional participants and even some large cryptocurrency exchanges rely on subpar custody approaches, leading Opimas to estimate that over US$