The type describes who owns the keys to the wallet and how they are stored. cold wallets are wallets where the private key of the user key is stored exclusively outside of BitGo's system. custodial means that this wallet is a cold wallet where BitGo owns the keys. Only customers of the BitGo Trust can create this kind of wallet. custodialPaired means that this is a hot wallet that is owned by the customer but it will be linked to a cold (custodial) wallet where BitGo owns the keys. This option is only available to customers of BitGo Inc. BitGo stores an encrypted private key for the user key of hot wallets. trading wallets are trading accounts where the coin is ofc. distributedCustody means You manage one key and another key agent manages the second key. BitGo manages the third key
