Intro: Double Spending

Now that we’ve discussed some pool game theory, let’s go ahead and revisit the classic attack of the cryptocurrency world: the double spend attack.

We previously discussed this at a high level in the first lecture, mentioning that we use computational resources to prevent double-spend attacks.

But how does this actually look within the blockchain? On top of that, is there still a way to double spend? Can I double spend with less than a majority of the voting power? We’ll answer all those questions for you in this upcoming module.

Race Attack