Security Enhancement of Mechanism for Preventing Unauthorized Recipient Transactions in the Ethereum Blockchain System

Abstract

This study focuses on preventing unauthorized recipient transactions within the Ethereum blockchain system. Unauthorized recipient transactions occur when a sender transfers cryptocurrency without the recipient's awareness, posing risks such as the recipient being implicated in crimes such as suspected involvement in money laundering. Previous research has designed a transaction restriction function using smart contracts tailored to Ethereum's unique blockchain model. This prevention mechanism was implemented on open-source software and its functionality verified. This study proposes a method to enhance the security of processing conducted to investigate the relationship between senders and receivers. We implement this method in open-source software and demonstrate its effectiveness.