A A cryptographic key that is used with an algorithm to encrypt and decrypt data. A cryptocurrency private key lets you... More that is not accessible from the Internet. Typical cold storage is a USB stick, an offline computer, or a A piece of paper (or another material, sometimes) containing a private key or mnemonic phrase to unlock a cryptocurrency wallet. More (see below).
I'm a literature professional in the crypto world since 2016. It doesn't sound very compatible, but I've been learning and teaching about blockchain and cryptos for international portals since then. After hundreds of articles and diverse content about the topic, now you can find me here on Alfacash, working for more decentralization.