Bitlayer V2 mainnet officially launched in the second quarter of 2025, marking a milestone event that signifies a new development stage for Bitcoin Layer 2 technology. The core breakthrough lies in the comprehensive upgrade from the traditional Proof of Stake (PoS) architecture to a Rollup architecture that is security equivalent to Bitcoin, achieving 100% equivalent security anchoring with the Bitcoin mainnet through innovative recursive proof technology that compresses massive transaction data before writing it into Bitcoin blocks.
This technological innovation fundamentally addresses the trust risk pain points of traditional sidechains—users can withdraw assets without relying on any third-party nodes and can directly complete transaction verification through the Bitcoin mainnet, fundamentally eliminating asset custody risks.
At the same time, the V2 mainnet enhances transaction throughput to the level of thousands per second, with a stable cost per transaction in the range of $0.01 to $0.1, reducing the native transaction cost of the Bitcoin mainnet by over 99%, significantly enhancing the practical value of Bitcoin.
As the world's first Bitcoin native Layer 2 project based on BitVM technology, Bitlayer creatively integrates the advantages of OP Rollup and ZK verification technology, successfully endowing Bitcoin with the capability to run complex smart contracts while retaining the foundation of Bitcoin's decentralized security. This breakthrough marks a key step for Bitcoin from a singular “digital gold” storage function to a programmable financial platform that supports diversified financial applications.
