First certificate in English 1 for updated exam with answers [cambridge]

The document discusses the history and development of a new technology called blockchain. Blockchain was originally developed for the digital currency Bitcoin in 2008 as a way to record transactions in a secure, decentralized manner without the need for a central authority. Since then, blockchain has expanded beyond cryptocurrencies and is now being applied in areas like banking, supply chain management, and healthcare due to its ability to securely and efficiently share verified data across networks.Read less