The connection between cryptocurrencies and blockchain is important, given that blockchain works on the principle that allows cryptocurrencies to work. Created alongside Bitcoin by the mysterious Satoshi Nakamoto, blockchain operates as a distributed, open ledger that records all transactions across a computer network. This innovation provides the essential security, sustainability, and openness required for cryptocurrencies to operate independently of central institutions such as banks or governments. In summary, blockchain is the foundation of cryptocurrency, ensuring its integrity and supporting global peer-to-peer transactions.