PIVX is a decentralized, open-source cryptocurrency focused on privacy protection, utilizing a Proof-of-Stake (PoS) consensus mechanism and a two-tier network where masternodes provide governance voting and instant transactions as second-layer functions. Through the SHIELD protocol (based on zk-SNARKs), it fully hides transaction amounts, sender, and receiver information, while allowing flexible switching between transparent and shielded transactions. Its economic model emphasizes sustainability, with transaction fees burned to curb inflation, aiming for low-barrier, low-energy privacy payments and decentralized autonomy.