This article explores the efficiency of Bitcoin transactions, comparing the upgrades Native SegWit and Taproot. It explains how SegWit addresses scalability by reducing data size, while Taproot enhances privacy and scripting capabilities. Designed for Bitcoin users and developers, the article highlights the core differences concerning efficiency, cost, privacy, and smart contract functionality. Structured insights guide readers through Bitcoin's evolution, showcasing how these upgrades improve transactions and contribute to the network's growth in addressing scalability, privacy, and functionality. Key terms include Bitcoin, SegWit, Taproot, transaction efficiency, privacy, and smart contracts.