NFT 기반 디지털 콘텐츠 이용허락 계약을 위한 크로스 체인 브릿지 기술에 관한 연구
A Study on Cross-Chain Bridge Technology for NFT-based Digital Content Licensing Agreements
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초록
최근 블록체인의 NFT 기반 마켓플레이스가 확대되고 있다. NFT는 사진, 동영상, 게임 아이템 등 다양한콘텐츠를 고유값으로 토큰화하여 거래할 수 있어, 소유권을 증명하기에 적합하다. 또한, 콘텐츠 저작권 이용허락 계약을 NFT와 SmartContract를 기반으로 서비스하는 사례도 증가하고 있다. 하지만, 타인의 저작물과유사하거나 동일한 저작물을 대상으로 NFT 주조 및 판매하여 금전적 피해와 저작권 문제가 발생하고 있다. 이러한 문제는 블록체인이 데이터 구조, 인터페이스 등의 차이로 인해 여러 블록체인 인프라 간 자산 교환등의 상호운용성이 제한되고 있기 때문이다. 이러한 문제를 해결하기 위해 블록체인을 연계하는 크로스 체인브릿지를 이용하여 NFT의 유일성을 보장하며, 연계할 수 있는 기술을 설계하고자 한다. 크로스 체인 브릿지는 NFT 동결, 연계 NFT 주조, NFT 환원 기능을 기반으로 하며 Hyperledger Fabric과 Ethereum의 구현을통해 실험적 검증을 하고자 한다. 본 연구를 통해 NFT의 유일성을 제공하여 동일 NFT 재생성 등 저작권 침해를 방지할 수 있을 것이며, NFT 기반 이용허락 계약 등 저작권 활용이 활성화될 것으로 기대한다.
Abstract
The NFT-based marketplace in blockchain ecosystems has been rapidly expanding. NFTs allow various types of content, such as photos, videos, and game items, to be tokenized with unique values, making them ideal for proving ownership. Moreover, the use of NFTs and smart contracts for content licensing agreements has been increasing. However, issues have emerged with minting and selling NFTs that closely resemble or duplicate copyrighted works, leading to financial losses and disputes. These issues stem from the limited interoperability between different blockchain infrastructures due to differences in data structures, interfaces, and other factors. To solve these issues, this paper aims to design a cross-chain bridge technology that ensures the uniqueness of NFTs while enabling interoperability between blockchain. The proposed cross-chain bridge will be built on functionalities such as NFT lock, NFT validation, and NFT return. Through this paper, we expect to prevent copyright infringements, while also promoting the use of NFTs for licensing agreements.
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