Bitcoin's early advocate, Andreas Antonopoulos, author of "Proficient Bitcoin," recently presented at the conference: "Whether we should use code submission, blockchain activity, number of DApps, or number of nodes as a measure of the success of a blockchain project. KPI (Key Performance Indicator)? It depends on what you want to achieve.” Antonopoulos points out that the credibility of a KPI depends to a large extent on the choice of metrics that suit its specific needs. However, he acknowledges that in many cases it is difficult to accurately measure these standards. Antonopoulos also reminded attendees to avoid seeing KPIs as an investment zero-sum game.