Main Concept

Blockchain consists of three important concepts: blocks, nodes and miners.

Blocks structure

• https://www.youtube.com/watch?v=pHEw4Z3UgUc

• https://www.youtube.com/watch?v=Wba_ZvpaJkk

Markle tree

• https://www.youtube.com/watch?v=fB41w3JcR7U&list=PLsyeobzWxl7oY6tZmnZ5S7yTDxyu4zDW-&index=9

Consensus

• https://www.youtube.com/watch?v=lB81CiQj21E&list=PLsyeobzWxl7oY6tZmnZ5S7yTDxyu4zDW-&index=13

• https://ethereum.org/en/developers/docs/consensus-mechanisms/ ***