This module explores the concept of cryptocurrencies, how digital wallets function, and the decentralized nature of blockchain technology. Learners will gain an understanding of advanced blockchain concepts such as yield farming within the DeFi (Decentralized Finance) ecosystem, including lending, staking, liquidity pools, and the mechanics of earning returns. The module also delves into the crucial security features of blockchain, focusing on consensus mechanisms like proof of work (PoW) and proof of stake (PoS). Topics like supply chain, traceability, and transparency will be covered to illustrate blockchain's real-world applications, emphasizing its immutable nature.