Paper Title
AN EFFICIENT COPYRIGHT PROTECTION SCHEME FOR DIGITAL CONTENT BASED ON MULTI-SIGNATURE IN BLOCKCHAIN

Abstract
With the advancement of wired and wireless networks and the development of the Internet, the creation and distribution of various digital contents such as movies, games, and animations have been thriving. These digital contents are easily modified and reproduced, and they spread widely. In this environment, there is a frequent occurrence of copyright infringement and misuse of digital contents, raising new issues regarding intellectual property rights and the preservation of ownership.By allowing multiple users to collaborate on the signing process, the entire system is less susceptible to risks associated with a single individual's exposure. Each party can sign to implement the consensus of the transaction or contract, increasing transparency and efficiently protecting the ownership and copyright of digital contents. Therefore, we have proposed a multi-signature scheme based on the Schnorr scheme in blockchain. Keywords - Copyright Protection, Schnorr, Multi-Signature, Ethereum, Digital Signature