For practical purposes I'd recommend an offline laptop, maybe running Tails OS and Electrum [0]. Public key is one thing and making transactions and signatures

For practical purposes I'd recommend an offline laptop, maybe running Tails OS and Electrum [0]. Public key is one thing and making transactions and signatures quite another. [0]: https://tails.boum.org/doc/anonymous_internet/electrum/index.pt.html https://tails.boum.org/doc/anonymous_internet/electrum/index...