BlockchainBlockchain is a decentralized and distributed digital ledger that records and verifies transactions across multiple computers or nodes. It allows for secure, transparent, and immutable storage of data, enabling trust and eliminating the need for intermediaries in various applications such as cryptocurrencies, supply chain management, and smart contracts. is a decentralized and distributed digital ledger that records and verifies transactions across multiple computers or nodes. It allows for secure, transparent, and immutable storage of data, enabling trust and eliminating the need for intermediaries in various applications such as cryptocurrencies, supply chain management, and smart contracts.