The technology of buying through the cryptocurrency exchange is significantly different from the traditional one. The principle of auction works here. Sellers of contracts present their conditions. The buyer chooses from them which conditions suit him. The conditions how to buy and sell cryptocurrency may differ slightly at different sites. But in general, they are very similar.
The exchange acts as a dealer and guarantees the security of the transaction. To do this, it applies the following mechanisms:
The seller and the buyer pass compulsory registration, after which they receive wallets. From them, all the transactions are carried out. Access is through a password that only the wallet owner knows. To make a profitable transaction, it is recommended to register on several exchanges. And before buying, compare the price of bitcoins.