We’ll convert the crypto amount into USD, or to the seller's currency, at no additional fee.1 Coins or tokens involve buying an amount, or fraction, of say, Bitcoin, and holding that investment in a digital wallet until you want to sell. Cryptocurrencies are traded against the US dollar, much in the same way as you would trade forex, buying or selling according to market movements. Cryptocurrencies are based on something called blockchain technology. A blockchain is like a really long receipt that keeps growing with each exchange of crypto. Itrsquo;s a public record of all the transactions that have ever happened with a given type of cryptocurrency. Yes, it sounds like go to my blog itrsquo;s straight out ofThe Matrix. Just think of it like a ledger that shows the history of that piece of currency.