How do blockchains work?

Blockchains operate through a series of blocks that are linked together in a chain. Each block contains a list of transactions, and once a block is completed, it is added to the chain. This process ensures that all transactions are recorded in a secure and transparent manner. To maintain consistency across the network, participants use consensus mechanisms, such as proof of work or proof of stake, to agree on the validity of each transaction. Once agreed upon, the new block is added to the chain, making it nearly impossible to alter previous transactions without detection.