Recording entry and exit records for a country, with properties such as confidentiality, integrity, and auditability, is increasingly important due to rising international mobility and security requirements. Traditional border control systems, which rely on centralised databases, are vulnerable to data manipulation and have limited interoperability between institutions. This study presents GateChain, a blockchain-based application that addresses these vulnerabilities. GateChain aims to enhance data integrity, reliability, and transparency by recording entry and exit events on a distributed, immutable, and cryptographically verifiable ledger. The application provides real-time access control and verification for authorised institutions. This paper describes the architecture and security components of GateChain and evaluates its performance and security features.

翻译：随着国际人员流动性的增加和安全需求的提升，记录国家出入境记录（需具备保密性、完整性和可审计性）变得日益重要。依赖集中式数据库的传统边境控制系统易受数据篡改影响，且机构间互操作性有限。本研究提出GateChain，一种基于区块链的应用程序，旨在应对这些脆弱性。GateChain通过将出入境事件记录在分布式、不可篡改且可加密验证的账本上，以增强数据完整性、可靠性和透明度。该应用为授权机构提供实时访问控制和验证功能。本文描述了GateChain的架构与安全组件，并评估了其性能和安全特性。