Secure Central Bank Digital Currency Using Distributed Ledger Technology

Abstract

The growth of financial technology has introduced Central Bank Digital Currency (CBDC), which is basically a digital version of money issued by central banks. In this work, a blockchain-based system is proposed that uses QR codes and UID numbers to make transactions easier and more secure. Blockchain helps keep a proper record of transactions so they cannot be easily changed or tampered with. Using QR codes makes payments quick and simple, especially for everyday use. The system also uses smart contracts to handle processes automatically. Since everything runs on a decentralized network, it reduces dependency on a single authority and lowers the chances of fraud. At the same time, user privacy is maintained by storing only encrypted verification data instead of actual personal details.