Context Note
Blockchain is a digital system for recording information in a secure and decentralized way, often used for cryptocurrencies like Bitcoin. Instead of one central authority controlling the data, many computers work together to verify and record transactions, making the system harder to tamper with. People are interested in blockchain because it can improve transparency and trust in many industries beyond just finance.
Speaking Practice
- What is the video about?
- How is a blockchain different from a traditional database or bank record system?
- Why might decentralization be important for security and trust?
- Do you think blockchain technology could change everyday services like voting, healthcare, or education? Why or why not?
- If you were explaining blockchain to a friend who has never heard of it, what simple example would you use?
Writing Practice
Write about a situation where using blockchain technology could be helpful. Explain why blockchain would be a good solution and what challenges might come with it.