Blockchain is a decentralized, digital ledger technology that allows for secure, transparent and tamper-proof recording of transactions. It is essentially a database that stores information across a network of computers rather than on a single centralized server.
The blockchain network consists of a chain of blocks, each containing a set of transactions that are verified and encrypted by network participants using complex algorithms. Once a block of transactions is verified, it is added to the blockchain in a way that ensures its integrity and immutability.
One of the key features of blockchain is that it is resistant to tampering and hacking due to its decentralized and distributed nature. This makes it a highly secure and reliable method of storing and sharing information, including financial transactions, medical records, and other sensitive data.
Blockchain technology also enables the creation of digital currencies, such as Bitcoin and Ethereum, which operate independently of central banks and traditional financial institutions.