what is a bitcoin and how does it work?

1. Ethereum (ETH) The first Bitcoin alternative on our list, Ethereum (ETH), is a decentralized software platform that enables smart contracts and decentralized applications (dApps) to be built and run without any downtime, fraud, control, or interference from a third party.

Cryptocurrency – meaning and definition Cryptocurrency, sometimes called crypto-currency or crypto, is any form of currency that exists digitally or virtually and uses cryptography to secure transactions .

A cold wallet — an offline device not connected to the internet— is the safest place to keep your crypto investment, according to experts. Bitcoin has the most crime reports of any cryptocurrency , which makes sense since it’s also the oldest and most-widely held crypto.