Storing the ownership information of digital files in the blockchain can prevent forgery or tampering, and can judge the authenticity of digital works through NFT, so more and more people use it for digital artworks, digital props and other diverse projects. trading area.

In the game CryptoKitties in 2017, you can see the initial model of NFT. This is a game that allows players to purchase limited-edition cats through the blockchain, and then breed cats by mating. Trading is carried out through cryptocurrencies, and if a beautiful and rare breed can be cultivated, its value will skyrocket rapidly.

The Metaverse will also continue to create countless virtual assets, and the ownership of virtual assets will become a very important issue, creating an incentive to quickly combine the Metaverse and NFTs. The virtual assets that can be traded through NFTs are endless.

At the Christie's auction in New York, the first auction of the work of Beeple (real name Mike Winkelmann), a digital artist who applies NFT, "Everydays: The First 5000 Days" (Everydays: The First 5000 Days), and sold for 69.3 million US dollars (approximately new NT$1.9 billion), which surprised everyone. This work is a collection of Beeple's digital paintings that have been published on the Internet every day for 13 consecutive years since May 2007. Beeple also became Jeff. Koons (Jeff Koons), David. After David Hockney, it is the third most expensive living artist for a work at auction.

The digital file of Go player Lee Sedol's only 9-dan defeating AI "AlphaGo" was sold for 250 million won (approximately NT$5.86 million), while Tesla CEO Elon Musk 's The painting of lover and singer Grimes was sold for about 6.5 billion won (about NT$150 million) after it was made into an NFT.

Even houses that only exist in virtual space can also be traded with NFTs , such as Korean-American artist Christa. Krista Kim's "Mars House" sold for about 500 million won (approximately NT$12 million).

Now, anyone can easily turn their creations into NFTs and sell them. Kakao's blockchain technology subsidiary "GroundX" has launched the NFT issuance service "KrafterSpace" based on its own blockchain platform "Klaytn".

In KrafterSpace, you can easily create NFTs by simply uploading a file. When making an NFT, you need a work (creation), cryptocurrency, and a cryptocurrency wallet. The process of making a work into an NFT is called "minting", and the handling fee is called "gas". You must pay in cryptocurrency (but currently it's free).

After completion, users who want to sell NFTs must upload the work to the mall page. 25 KrafterSpace can be linked with the web browser wallet "Kaikas" for people to use, allowing users to inquire, register and sell on the world's largest NFT trading platform "Open Sea", and trade NFTs issued by themselves.

In addition to KrafterSpace, there are many platforms that provide NFT production services, such as Open Sea, Mintable, Nifty, Gateway, Rarible , and Makersplace. The Ethereum blockchain , which currently has the largest NFT ecosystem , can support platforms such as Open Sea, Rarible, Mintable, and Makersplace.

Although both the Metaverse and NFT are unprecedented innovations, with the development of the Metaverse, the copyright issue of NFT has also begun to emerge. While anyone can issue an NFT, there is currently no way to confirm whether the copyright belongs to the person who issued the NFT.

The auction planning company Wannabe International has stated that it will auction Kim Hwan-ki's "Full Ignition: Untitled", Park Shou-geun's "Two Children and Two Mothers" and Li Zhongxie's "Scalper" with NFT, and conduct online bidding in 22 countries at the same time. However, the dispute arose when the company reached an auction agreement with collectors of works without first consulting with the copyright owners of those works.

Since the copyright and ownership of the work are held by different people, the collector does not have the copyright and cannot make the work into NFT. In the end, the incident put the controversy to rest after Wannabe International and the collector apologized to the copyright owner, although such disputes will continue to arise in the future.

Because it is impossible to verify whether the NFT has a copyright problem, and the NFT itself is only provided in the form of metadata, it is also a problem whether to obtain institutional protection when the link or the copyright disappears.

In addition, there are also cases where works whose copyright protection period has expired are sold as NFTs. We must discuss the NFT issue caused by the metaverse revolution from multiple perspectives in order to find corresponding solutions and policies.