What is double-spending in cryptocurrency?
Double spending (double-spending) is a situation where the same cryptocurrency is used twice. This is possible due to the features of the blockchain, which is a distributed database where all transactions with cryptocurrency are stored. How does the blockchain work? A blockchain is a chain of blocks, each of which contains information about transactions. When a user sends cryptocurrency to another user, this transaction is recorded in a block and added to the blockchain. After that, you