Crypto custody firm Kingdom Trust, which manages $13 billion in assets, has entered into an exclusive escrow agreement with Fidelity Digital Assets, a subsidiary of asset management giant Fidelity. Fidelity Digital Assets will provide Bitcoin custodian services for its retirement accounts. Funds are stored on a self-service retirement platform called Choice. Investors can buy or sell stocks, exchange-traded funds (ETFs), and digital assets in an account with tax benefits. Retirees who use Choice will not have to manage their own private keys, but will choose to keep Bitcoin in a cold wallet entirely by Fidelity. Kingdom Trust CEO Ryan Radloff said that personally, he has gradually trusted the Fidelity brand family, and bitcoins in retirement accounts can now be protected by Fidelity digital assets. It also applies to those who consider Bitcoin as their retirement portfolio.