BitGo is a regulated trust company under the Division of Banking in South Dakota. Cold storage assets are held in segregated accounts, insured, and secured by BitGo’s peer-reviewed multi-signature security.
Copper offers custody through online and offline technology giving access to more than 150 digital assets. Specializing in multi-party computation, Copper can co-sign transactions remotely without risk of private key exposure, so users can configure their wallets offline and online.
Fidelity Digital Assets is one of the world’s largest diversified financial services providers. Its custody service uses cold storage and additional multilevel safeguards. The company integrates top-of-the-line trade execution into its custody platform.