Smart Contract Nuances: Empirical Insights With Security, Privacy, and Social Impacts

Abstract

Smart contracts have revolutionized finance by enabling decentralized applications without intermediaries, yet their widespread adoption has exposed significant gaps in understanding their practical implications and unresolved challenges. Unlike existing works that primarily focus on theoretical overviews, this paper employs a rigorous empirical methodology to bridge the gap between research and real-world operations. By combining insights from user and developer communities, practical experiments on testnets and mainnets, and a comprehensive analysis of prior studies, this work uncovers underexplored applications, highlights discrepancies between theoretical models and actual behaviors, and identifies emerging security, privacy, and social challenges. The paper first provides structural insights into the surveyed contents and then introduces critical security, privacy, and social considerations. The first category of surveyed contents includes well-documented applications such as automated market makers (AMMs), non-fungible tokens (NFTs), and flash loans. Unlike existing works, this study offers unified explanations that integrate fragmented information while presenting experimental findings and practical proposals. The second category covers under-explored applications like NFT vouchers for real-world assets, wrapped NFTs, and reversible transactions. By offering actionable insights and usage guidelines, this study distinguishes itself by addressing the nuanced, practical realities of smart contract applications, equipping researchers, developers, and users with the knowledge needed to navigate the evolving world of smart contracts effectively.