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A non-fungible token (NFT) is a special type of cryptographic token which represents something unique; non-fungible tokens are thus not mutually interchangeable by their individual specification. This is in contrast to cryptocurrencies like Zcash, and many network or utility tokens that are fungible in nature.

Applications

Non-fungible tokens are used to create verifiable digital scarcity, as well as player ownership, and the possibility of asset interoperabilty across multiple games. NFTs are used in several specific applications that require unique digital items like crypto-collectibles and crypto-gaming.

Popular blockchain games like CryptoKitties make use of non-fungible tokens on the Ethereum blockchain. NFTs are used to represent in-game assets, and are controlled by the user, instead of the game developer. This lets the assets be traded on third-party marketplaces without permission from the game developer. NFTs also find potential use in digital art, by helping prove authenticity and ownership.

Specific token standards have been created to support the use of blockchain in gaming. These include the ERC-721 standard of CryptoKitties, and the more recent ERC-1155 standard.

Growth and mainstream appeal

Non-fungible tokens made their way into mainstream news when CryptoKitties went viral and subsequently raised a $12.5 million investment. RareBits, a Non-Fungible Token marketplace and exchange, raised a $6 million investment. Gamedex, a collectible cards game platform made possible by NFTs, raised a $800,000 seed round. Decentraland, a blockchain-based virtual world, raised $26 million in an initial coin offering, and had a $20 million internal economy as of September 2018. Nike holds a patent for his blockchain-based NFT-sneakers called ‘CryptoKicks’.

References

1. https://www.merriam-webster.com/dictionary/fungible {{citation}}: Missing or empty |title= (help)
2. Schroeder, Stan. "Crypto trading card game 'Gods Unchained' looks pretty sweet in first gameplay trailer". Mashable. Retrieved 2018-11-18.
3. http://zerocash-project.org/q_and_a#why-do-i-need-fungibility {{citation}}: Missing or empty |title= (help)
4. "Enjin is Creating a Real-Life Ready Player One, and It's Powered by Blockchain". VentureBeat. 2019-04-16. Retrieved 2019-08-14.
5. Wong, Joon Ian. "The ethereum world is now obsessed with breeding cartoon cats". Quartz. Retrieved 2018-05-02.
6. "CryptoKitties shows everything can — and will — be tokenized". VentureBeat. 2017-12-04. Retrieved 2018-05-02.
7. "The Art World Needs Blockchain – Irish Tech News". irishtechnews.ie. Retrieved 2018-05-02.
8. Wong, Joon Ian. "CryptoKitties is jamming up the ethereum network". Quartz. Retrieved 2018-05-10.
9. "CryptoKitties Mania Overwhelms Ethereum Network's Processing". Bloomberg.com. 2017-12-04. Retrieved 2018-05-10.
10. "CryptoKitties raises $12M from Andreessen Horowitz and Union Square Ventures – TechCrunch". techcrunch.com. Retrieved 2018-05-07.
11. "Crypto-collectibles and Kitties marketplace Rare Bits raises $6M – TechCrunch". techcrunch.com. Retrieved 2018-05-07.
12. "Blockchain startup Gamedex raises $0.8 million seed round to build platform for digital collectible card games like Pokemon – TechStartups". techstartups.com. Retrieved 2018-05-07.
13. Russo, Camilla (2018-06-12). "Making a Killing in Virtual Real Estate". Bloomberg. Retrieved 2018-09-05.
14. Hankin, Aaron (2018-09-04). "People are making more than 500% buying property that doesn't actually exist". MarketWatch. Retrieved 2018-09-05.
15. https://thenextweb.com/hardfork/2019/12/10/nike-blockchain-sneakers-cryptokick-patent

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