Blockchains are digital ledgers and can be formally defined as a continuously-growing list of records that are linked tougher and secured using advanced cryptography. In more simple terms, a blockchain is literally a chain of blocks. Each record in the list of a blockchain chain is called a block that contains specific types and pieces of information. Each block will usually include some sort of pointer as a link to the previous bock, transaction data, and a timestamp, which can take a variety of forms.
The blockchain that was engineered by Mr. Satoshi serves as the public ledger for all bitcoin transactions. Bitcoin, if you don’t already know, is a digital currency that is now worth roughly $16,000, that runs on blockchain technology. The most well-known blockchain on the market today is that for Bitcoin, with the Ethereum blockchain coming in a close second.