What is the proof-of-work system? Bitech Support Team January 12, 2019 16:39 Follow Proof of work is a protocol with the main objective of deterring cyber-attacks. In order for a miner to have a block accepted by the network, it must complete a proof-of-work. Related articles Is cryptocurrency taxed? What are the long-term projections for cryptocurrency? Sesterce's official note on the anti-marketing attack we are undergoing. How does our affiliate program work? Beginner's Guide to Mining in 2018 Comments 0 comments Please sign in to leave a comment.