Native SegWit Support

Architecture

Native SegWit support represents a fundamental shift in Bitcoin’s transaction structure, segregating witness data—digital signatures and scripting information—from the base transaction data. This architectural change directly addresses transaction malleability, a vulnerability where transaction IDs could be altered before confirmation, impacting layer-two scaling solutions. Consequently, it enables more efficient block propagation and facilitates the development of advanced smart contracts and scaling technologies like the Lightning Network. The implementation reduces transaction sizes, increasing network capacity and lowering fees, impacting derivative contract settlement efficiency.