PrimeLayer is a flexible and future proof BTC Layer 2 that represents a paradigm shift in modular Bitcoin design. It merges the security of Bitcoin, the programmability of Ethereum, and the scalability and speed of ZK-rollups to offer the first truly compromise-free, production-ready Bitcoin Layer 2. PrimeLayer avoids the pitfalls of competitors by rooting its state data to the Bitcoin blockchain using AuxPow tags rather than public block space witness field data- making it a truly future proof solution, regardless of how large the Bitcoin ecosystem and public block space competition becomes.