This man is visibly SHOCKED to learn about bitcoin. What do you think he was thinking Original credit: Johnny Hamcheck

Blockchain is the foundation of technology for cryptocurrencies such as bitcoin. Blockchain is a chain of data blocks, each containing information about transactions and other events. Each new block in the chain is linked to the previous block and cannot be changed or deleted without changing the entire chain. This makes blockchain a safe and secure way to store data and exchange information.