Blockchain Fundamentals Review
Congratulations on completing the Blockchain Fundamentals course! Let's review the key concepts.
Key Takeaways
Core Concepts
Blockchain is a distributed, immutable ledgerBlocks are linked through cryptographic hashesConsensus mechanisms ensure network agreementDifferent types serve different purposesConsensus Mechanisms
**Proof of Work**: Mining with computational power**Proof of Stake**: Validation through token stakingEach has trade-offs in security, speed, and energyNetwork Types
Public: Open, decentralized (Bitcoin, Ethereum)Private: Permissioned, controlled (Hyperledger)Consortium: Shared governanceReal-World Applications
Finance, supply chain, healthcare, governmentNFTs, DeFi, gaming, identityWhat's Next?
Continue your learning journey:
**Crypto Wallets 101**: Learn to secure your assets**Introduction to DeFi**: Explore decentralized finance**Ethereum Essentials**: Dive into smart contractsKnowledge Check
Test yourself:
Can you explain how blocks are linked?What's the difference between PoW and PoS?When would you use a private blockchain?Name three blockchain use cases outside of crypto