Introduction to Blockchain and Consensus Algorithms
summary
An introduction to how classical blockchains work, covering transactions, blocks, digital signatures, fork causes, and why mining doesn't always require GPUs. The talk also surveys consensus algorithms including Proof-of-Work, Proof-of-Stake, Proof-of-Activity and several hybrid and experimental approaches.
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chapters (28)
- 0:00Introduction
- 1:12Centralization and banking issues
- 3:00What is blockchain
- 5:06Blockchain problems and vulnerabilities
- 6:30Blockchain scalability and speed
- 9:01Network delays and transactions
- 11:50Speeding up transactions
- 12:55What are transactions
- 13:59How blocks work
- 16:13Forks and consequences
- 18:39Consensus algorithms
- 20:08Proof-of-Work explained
- 22:35Mining energy use
- 23:59Proof-of-Stake basics and attacks
- 26:58How Proof-of-Stake works
- 28:01Proof-of-Stake attacks
- 30:06Hybrid algorithms
- 31:53Q&A 1
- 35:24Q&A 2
- 40:44Bitcoin support and development
- 42:30Waves platform
- 46:06Mining hardware
- 47:55Attack prevention
- 48:57Q&A 3
- 51:05API and development
- 51:26Mining difficulty adjustment
- 53:13Q&A 4
- 54:20Conclusion
