Efficient Proof Systems: How PoStake, PoSpace, and VDFs Impact Blockchain Security

This article explores three core adversarial mining strategies in blockchain systems—double spending, short-term selfish mining, and long-term selfish mining. It also delves into efficient proof systems like Proof of Stake, Proof of Space, and Verifiable Delay Functions (VDFs), examining how each protocol handles adversarial threats and what resource thresholds maintain network security.