DISTRIBUTED-WORK-MODEL/OAKLAND, Calif.--(BUSINESS WIRE)--Bitkey, the self-custody bitcoin wallet built by the Proto team at Block, Inc. (NYSE: SQ), has started shipping its first hardware devices to customers' homes this week and people can now truly own and manage their bitcoin easily and safely. After opening pre-orders, the team has continued working on finishing additional security and recovery features while putting the final touches to the new Bitkey app, which is now available for download in the App ...