We originally assumed that the person who launched the 51% attack was for profit. We can calculate the cost and benefit of the attacker. Let’s review the prerequisites for understanding the attacker’s attack:
- Mastered 51% of the computing power of Bitcoin's entire network
Analyzing the first point, how much money is needed to master 51% of the computing power of the entire Bitcoin network. The computing power of the whole network is calculated according to 100P, and the price of the mining machine is calculated according to 1T/8600 yuan (this is the lowest price currently)
51P mining machine purchase cost = 100P * 51% * 1024 * 8600 yuan = 449,126,400=450 million
To deploy 51P's computing power and launch an attack, we estimate that an additional 100 million yuan will be required for other expenses and electricity, which is calculated as 550 million.