Blockchain is a secure series or chain of timestamped records stored in a database that a group of users manages who are a part of a decentralized network. Blockchain is a decentralized or distributed ledger where each node in the network has access to the data or records stored in a blockchain. The encryption of all the important data records in the blockchain is done using cryptographic techniques. This ensures the security of the data in the blockchain.
BlockChain uses decentralized consensus to maintain the network, which means it is not centrally controlled by any Organization . In fact, the larger the network grows and becomes increasingly decentralized, the more secure it becomes.