This video does a very good job explaining what exact problems you would face if you tried to create a decentralized payment system and how bitcoin solved thes

This video does a very good job explaining what exact problems you would face if you tried to create a decentralized payment system and how bitcoin solved these problems. https://www.youtube.com/watch?v=bBC-nXj3Ng4&vl=en https://www.youtube.com/watch?v=bBC-nXj3Ng4&vl=en