Block

A collection of cryptocurrencyA digital currency running on a blockchain and built with cryptography. Contrary to central-bank issued currency, cryptocurrency issuance rules are... transactions. Every few minutes (or seconds, depending on the blockchainBlockchain is a type of database storing an immutable set of data, verifiable to anyone with access to it —through...) one minerMiners secure some blockchain networks by ordering crypto transactions into blocks and verifying the blocks of other miners. For this... or validator verifies the transactions order of one block. The block is then added to the blockchain, which keeps the history of all blocks. Every new block added to the blockchain increases the difficulty of rewriting this history of past transactions.