Some recommendations that we came up with after reviewing the articles is that bitcoin mining machines can be replaced with updated with faster and energy-efficient chips. This will make the mining machines faster and compute tasks, solve algorithms, and put transactions on the ledger quickly. We also recommend using mining machines in an area where there is a lot of energy and use technology that is energy efficient. By solving the problem of cleaner, self-sustaining energy, we can eliminate this problem of blockchains.