Blockchain consensus misconception - how miners create blocks?
Channel: Blockchain State
Date: 2022-07-02

Some people think that blockchain "consensus" protocol is about collective decision making in the network - how miners create blocks? That the majority (51%) of nodes agree about the validity of each blockchain. No blockchain consensus has nothing to do with agreements in the network. Each node acts upon pre-designed rules and does not transmit its decisions. Moreso, each node is independent and cannot dump even a valid block receiving from anythor. Why? You would the node do it, you will learn in this video. 

0:00 |  Intro
0:32 |  Nodes act independently
1:06 |  How blockchain consensus works
3:11 |  Rule of the longest chain
4:02 |  51% majority
5:04 |  hardfork

See next:
Checkpoints on Blockchain https://youtu.be/mu6D2H3PhJs

The DAO crisis https://youtu.be/Qz9L5wxsaSw