This study intends to examine and analyze the NFT international market trends focusing on NFT art in the advent of the Web 3.0 Era. Web 3.0 can be defined as a user-centered decentralized Internet environment and technologies such as blockchain, cryptocurrencies, nonfungible tokens (NFTs), decentralized autonomous organizations (DAOs), Decentralized finance (DeFi), artificial intelligence, and metaverse. Based on the fact that blockchain form the physical cross-border economy in Web 3.0-powered metaverse world, we analyzed major cases of NFT market trends and policies in global areas such as the United States, France, Japan, China, and the Middle East as well as South Korea. In order to clearly grasp the essential concept of Web 3.0, the four main features of Web 3.0 were derived by analyzing related theories. Web 3.0 is characterized by ‘decentralization’ ‘data ownership’ ‘token economy’ ‘convergence with metaverse’. With the drive to create a decentralized digital economy, Web 3.0’s technological philosophy grants data ownership to data creators. This study analyzed major cases by paying attention to the field of NFT art that can clearly show the core value of Web 3.0 guaranteeing creators' data ownership, and looked at each country's web 3.0-related policies.