A blockchain is a decentralized digital ledger that records transactions securely, transparently, and permanently without relying on a central authority.
Blockchain technology powers cryptocurrencies like Bitcoin and Ethereum. It allows transactions to be verified by a distributed network instead of banks or intermediaries, making financial systems more transparent and resistant to fraud.
A blockchain is a shared record of transactions that is replicated across many computers worldwide.
Transactions are cryptographically verified, making it extremely difficult to alter or manipulate records.
Users can send and receive value directly without needing banks, payment processors, or intermediaries.
Blockchain is used in healthcare, supply chains, finance, identity systems, and many other industries.
Blockchain removes the need for trust in centralized institutions by replacing it with transparent, verifiable, and immutable records that anyone can audit. This makes it one of the most important technological innovations of the digital era.