Until recently, one of the missing pieces in the wider crypto ecosystem was an institutional-grade crypto asset custodial solution. In 2019, that piece of the puzzle has finally fallen into place and the crypto custodial service industry is booming. Institutional investors now have a way into the market and can pick from a multitude of solutions that allow them to secure crypto assets in a safe, secure, trusted, regulated way. Who are the players and what are the implications for the industry?