Blockchain technology is a structure that stores transactional records, also known as blocks, of the public in several databases, known as the chain, in a network connected through peer-to-peer nodes. It is a type of distributed database or ledger that enables the secure sharing of information. Here are some key features of blockchain technology:

• Distributed ledger: A blockchain database stores data in multiple locations, making it decentralized and transparent.

• Security: Blockchain technology achieves decentralized security and trust in several ways. New blocks are always stored linearly and chronologically, and after a block has been added to the end of the blockchain, previous blocks cannot be changed.

• Smart contracts: A set of rules called a smart contract can be stored on the blockchain and executed automatically, speeding up transactions and eliminating the need for record reconciliations.

• Consensus mechanism: A blockchain system establishes rules about participant consent for recording transactions. New transactions can only be recorded when the majority of participants in the network give their consent.

Blockchain technology has been adopted in various sectors, including finance, healthcare, logistics, and entertainment, among others. It provides a high level of security and trust that modern digital transactions require.