Crypto exchange Gemini founders Cameron and Tyler Winklevoss have won a patent for a cold storage method involving air-gapped computers, geographically remote vaults, plastic cards and, possibly, papyrus. The patent outlines a plan to develop a network of computers capable of generating accounts for storing cryptocurrencies or cryptocurrency-related exchange-traded products (ETPs). As part of a security measure, the computers would be isolated except when necessary to transfer assets, essentially acting as a cold storage device.

The computers would generate these keys for new accounts, which would then be segmented into parts and written onto an external memory device, such as a flash drive, CD, DVD or written down physically onto a laminated card, sheet of paper, piece of plastic or even papyrus, according to the document. The computers would have access to a secure portal, which could, if necessary, connect the machines to the blockchain network in order to process transactions, the document explains.