What is a blockchain? A blockchain is a record of data that is constantly updated and distributed across a peer-to-peer network of computers. Each block is encrypted with the public key of the previous block. These blocks are linked by a chain of unbroken cryptographic links. Each block includes the hash of the prior block.
Bitcoin mining is a lot of work. It requires a great deal of computing power, or “hashpower”, which involves solving complex mathematical problems. This is how transactions are recorded into the blockchain. In order to mine, miners must process transaction bitcoin data from the network and include it in their blocks. Miners also have to do this several times a day, every day, to maintain and update the blockchain. It requires a great deal of time and energy.
Blockchain Technology: The Blockchain is a technology that is based on the idea of decentralized consensus. It is basically a permanent and immutable digital ledger of transactions. The information is distributed across the whole network of nodes. A transaction can be verified by anyone on the network. The data is shared and cannot be changed. Anyone can verify a transaction is legitimate.