Consensus__Protocols__in_Blockchain.pptx

Introduction with types ,applictions and more

1. Consensus Protocols in Blockchain Understanding how distributed networks agree on shared data. By: [Your Name] Department of Computer Science

2. What is Consensus? Consensus is the process of agreement among distributed systems or nodes. It ensures all copies of the ledger are identical and trustworthy. Critical for security and decentralization in blockchain.

3. Why Consensus is Important Prevents double spending. Eliminates need for a central authority. Ensures network reliability and fault tolerance. Maintains trust among anonymous participants.

4. Popular Consensus Protocols Proof of Work (PoW) – Used in Bitcoin. Proof of Stake (PoS) – Used in Ethereum 2.0. Delegated Proof of Stake (DPoS). Practical Byzantine Fault Tolerance (PBFT).

5. Proof of Work (PoW) Miners compete to solve cryptographic puzzles. Requires high computational power. Secure but energy-intensive. Example: Bitcoin.

6. Proof of Stake (PoS) Validators are chosen based on staked coins. Energy efficient and faster. Discourages malicious behavior using stake penalties. Example: Ethereum 2.0.

7. Delegated Proof of Stake (DPoS) Stakeholders vote for trusted delegates to validate transactions. High throughput and democratic selection. Used in EOS, TRON.

8. Practical Byzantine Fault Tolerance (PBFT) Tolerates faulty or malicious nodes. Best suited for private blockchains. Ensures fast finality and low latency.

9. Comparison of Protocols PoW – Secure, but energy hungry. PoS – Efficient, relies on stake distribution. DPoS – Fast, but semi-centralized. PBFT – High performance, limited scalability.

10. Future of Consensus Mechanisms Hybrid models (PoW + PoS) emerging. Research into Proof of History, Proof of Space-Time. Focus shifting to sustainability and scalability.

11. Conclusion Consensus is the backbone of blockchain networks. Different mechanisms suit different use-cases. Innovation continues to improve security and efficiency.

12. Thank You! Questions? Presented by: [Your Name] Email: [email protected]