Blockchain is a revolutionary technology that serves as a distributed, decentralized digital ledger for recording transactions across a network of computers. Information is stored in blocks that are linked together chronologically, forming an unalterable chain.
Once data is recorded on a blockchain, it is extremely difficult to change or delete, making it highly secure and transparent. Each block contains a cryptographic hash of the previous block, creating a tamper-proof record.
While blockchain was originally developed for Bitcoin, its applications extend far beyond cryptocurrencies. It is now used in banking, supply chain management, healthcare, voting systems, and smart contracts. The technology's main advantage is its decentralized nature, which eliminates the need for trusted intermediaries.