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Cold storage for Bitcoin and other Cryptocurrencies. Coldwallet2020 is an open source cryptocurrency cold wallet generator to create and print vanity or random cold wallet addresses for over 200 coins and tokens. Furthermore, you have the option to save or print on paper for storing your coins off-line as a physical document that can be secured like cash. When you are ready to spend from your Bitcoin cold storage wallet, you will simply need to import the private key to a Bitcoin wallet that is on-line. Any Bitcoin wallet that supports importing private keys will works.