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A non-fungible token (NFT) is a unique and non-interchangeable unit of data stored on a digital ledger (blockchain). NFTs can be used to represent easily-reproducible items such as photos, videos, audio, and other types of digital files as unique items (analogous to a certificate of authenticity), and use blockchain technology to establish a verified and public proof of ownership. Copies of the original file are not restricted to the owner of the NFT, and can be copied and shared like any file. The lack of interchangeability (fungibility) distinguishes NFTs from blockchain cryptocurrencies, such as Bitcoin.

The first NFT project was launched in 2015 on the Ethereum blockchain, and interest grew with the rise of interest in crypto currencies. Interest and the total monetary value of NFTs grew significantly in 2021, with sales of NFTs exceeding $2 billion during the first quarter of the year.

NFTs have drawn criticism with respect to the energy cost and carbon footprint associated with validating blockchain transactions as well as its frequent use in art scams.

Description

An NFT is a unit of data stored on a digital ledger, called a blockchain, which can be sold and traded. The NFT can be associated with a particular digital or physical asset (such as a file or a physical object) and a license to use the asset for a specified purpose. An NFT (and the associated license to use, copy or display the underlying asset) can be traded and sold on digital markets.

NFTs function like cryptographic tokens, but, unlike cryptocurrencies like Bitcoin, NFTs are not mutually interchangeable, hence not fungible. While all bitcoins are equal, each NFT may represent a different underlying asset and thus may have a different value. NFTs are created when blockchains string records of cryptographic hash, a set of characters identifying a set of data, onto previous records therefore creating a chain of identifiable data blocks. This cryptographic transaction process ensures the authentication of each digital file by providing a digital signature that is used to track NFT ownership. However, data links that point to details like where the art is stored can die and NFTs do not necessarily involve a transfer of any intellectual property rights of a work.

Uses

The unique identity and ownership of an NFT is verifiable via the blockchain ledger. Ownership of the NFT is often associated with a license to use the underlying digital asset, but generally does not confer copyright to the buyer, some agreements only grant a license for personal, non-commercial use, while other licenses also allow commercial use of the underlying digital asset.

Digital art

Digital art was an early use case for NFTs, because of the ability of blockchain technology to assure the unique signature and ownership of NFTs. The digital artwork entitled "Everydays: the First 5000 Days", by artist Mike Winkelmann, also known as Beeple, sold for US$69.3 million in 2021. The purchase resulted in the third-highest auction price achieved for a living artist, after Jeff Koons and David Hockney, respectively.

Another Beeple piece entitled "Crossroad", consisting of a 10-second video showing animated pedestrians walking past a figure of Donald J. Trump, sold for US$6.6 million at Nifty Gateway in March 2021.

Curio Cards, a digital set of 30 unique cards considered the first NFT art collectibles on the Ethereum blockchain, sold for $1.2 million at Christie's Post-War to Present auction. The lot included the card "17b," a digital "misprint" (a series of which were made by mistake).

Some NFT collections are examples of generative art, where many different images can be created by assembling a selection of simple picture components in different combinations.

Collectibles

NFTs can represent digital collectibles like physical card collections, however in a completely digital format. In February 2021, a LeBron James slam dunk NFT card on the NBA Top Shot platform sold for $208,000.

Ticketing

Tickets, for any type of event, have been suggested for sale as NFTs. Such proposals would enable event organizers or performers to garner royalties on resales.

Games

NFTs can also be used to represent in-game assets, such as digital plots of land, which are controlled by the user instead of the game developer. NFTs allow assets to be traded on third-party marketplaces without permission from the game developer.

In October 2021, developer Valve banned applications that use blockchain technology or NFTs to exchange value or game artifacts from their Steam platform.

Virtual worlds

Community NFTs such as "Bored Ape Yacht Club" and "Pudgy Penguins" entitle token holders to benefits, including membership entry to a private Discord server by validating the NFT exists in their wallet.

Described as the Metaverse, virtual worlds such as Decentraland, Sandbox, Star Atlas, CryptoVoxels, and Somnium Space allow users to create galleries to show off NFT art, clothes, real estate and attend live events with friends online. They use NFTs to auction off limited objects such as virtual land. The open standards means users can seamlessly transact and bring external NFT objects onto their purchased land. In June 2021, a plot of virtual land sized 16 acres on Decentraland was sold for $913,228.20.

Music

Blockchain and the technology enabling the network have given the opportunity for musicians to tokenize and publish their work as non-fungible tokens. As their popularity grew in 2021, NFTs were used by artists and touring musicians to recuperate lost income due to the 2020 COVID-19 pandemic. In February 2021, NFTs reportedly generated around $25 million within the music industry. On February 28, 2021, electronic dance musician 3LAU sold a collection of 33 NFTs for a total of $11.7 million to commemorate the three-year anniversary of his Ultraviolet album. On March 3, 2021, rock band Kings of Leon became the first to announce the release of a new album, When You See Yourself, in the form of an NFT which generated a reported $2 million in sales. Other musicians that have used NFTs include American rapper Lil Pump, visual artist Shepard Fairey in collaboration with record producer Mike Dean, and rapper Eminem.

Film

In May 2018, 20th Century Fox partnered with Atom Tickets and released limited-edition Deadpool 2 digital posters to promote the film. They were available from Opensea.io and the GFT exchange. In March 2021 Adam Benzine's 2015 documentary Claude Lanzmann: Spectres of the Shoah became the first motion picture and documentary film to be auctioned as an NFT.

In 2021, an NFT associated with the score of the movie Triumph, composed by Gregg Leonard, was minted as the first NFT for a feature film score.

A Malayalam feature film, Kurup is the first Indian film to have NFT collectibles.

Other projects in the film industry using NFTs include the announcement that an exclusive NFT artwork collection will be released for Godzilla vs. Kong and director Kevin Smith announcing in April 2021 that his forthcoming horror movie Killroy Was Here would be released as an NFT. The 2021 film Zero Contact, directed by Rick Dugdale and starring Anthony Hopkins, was also released as an NFT.

Memes

A number of internet memes have been associated with NFTs, which were minted and sold by their creators or by their subjects. Examples include Doge, an image of a Shiba Inu dog whose NFT was sold for $4 million in June 2021, as well as Charlie Bit My Finger, Nyan Cat and Disaster Girl.

Sports

NFTs have also been used in sports, in September 2019, NBA player Spencer Dinwiddie tokenized his contract so that others can invest into it. In addition, Dapper Labs, a blockchain technology-based company, has collaborated with the NBA to create "NBA Top Shot", a marketplace for digital highlight clips.

Fashion

In 2019, Nike acquired a patent that allows for blockchain technology to attach cryptographically secured digital assets in the form of NFTs to physical products, such as a pair of sneakers, under the name "CryptoKicks".

Pornography

Some porn stars have also tokenized their pornographic work, allowing for the sale of unique content for their customers, though hostility from NFT marketplaces towards pornographic material has presented significant drawbacks for creators.

Academia

In May 2021, UC Berkeley announced that it would be auctioning NFTs for the patent disclosures for two Nobel Prize-winning inventions: CRISPR-Cas9 gene editing and cancer immunotherapy. The university will continue to own the patents for these inventions, as the NFTs relate only to the university patent disclosure form, an internal form used by the university for researchers to disclose inventions. The NFTs were sold on June 8, 2021, for 22 ETH (ca. $55,000).

Political protest

The first credited political protest NFT ("Destruction of Nazi Monument Symbolizing Contemporary Lithuania") was a video filmed by Professor Stanislovas Tomas on April 8, 2019, and minted on March 29th, 2021. In the video, Tomas destroys a state-sponsored Lithuanian plaque locate on the Lithuanian Academy of Sciences honoring Nazi war criminal Jonas Noreika with a sledgehammer.

Performance art

In March, 2021, Injective Protocol (through the name BurntBanksy) destroyed a $95,000 original screen print entitled "Morons" from the famous English graffiti artist Banksy as an act of performance art which they minted and sold as a video NFT. According to the performance artist, the act was a way to transfer a physical work of art to the NFT space.

Copyright

Ownership of an NFT does not inherently grant copyright to whatever digital asset the token represents. While someone may sell an NFT representing their work, the buyer will not necessarily receive copyright privileges when ownership of the NFT is changed and so the original owner is allowed to create more NFTs of the same work. In that sense, an NFT is merely a proof of ownership that is separate from a copyright. According to legal scholar Rebecca Tushnet, "In one sense, the purchaser acquires whatever the art world thinks they have acquired. They definitely do not own the copyright to the underlying work unless it is explicitly transferred." In practice, NFT purchasers do not generally acquire the copyright of the underlying artwork.

Standards in blockchains

Specific token standards have been created to support various blockchain use-cases. These include the Ethereum ERC-721 standard of CryptoKitties, and the more recent ERC-1155 standard. The FLOW and Bitcoin Cash blockchains support NFTs.

Ethereum

ERC-721 was the first standard for representing non-fungible digital assets on the Ethereum blockchain. ERC-721 is an inheritable Solidity smart contract standard, meaning that developers can create new ERC-721-compliant contracts by importing them from the OpenZeppelin library. ERC-721 provides core methods that allow tracking the owner of a unique identifier, as well as a permissioned way for the owner to transfer the asset to others.

The ERC-1155 standard offers "semi-fungibility", as well as providing a superset of ERC-721 functionality (meaning that an ERC-721 asset could be built using ERC-1155). Unlike ERC-721 where a unique ID represents a single asset, the unique ID of an ERC-1155 token represent a class of assets, and there is an additional quantity field to represent the amount of the class that a particular wallet has. The assets under the same class are interchangeable, and the user can transfer any amount of assets to others.

FLOW

The FLOW blockchain which uses proof of stake consensus model supports NFTs, for example NBA Top Shot is run on the FLOW blockchain. Cryptokitties plans to switch from Ethereum to FLOW in the future.

Tezos

Tezos is a blockchain network that operates on proof of stake and supports the sale of NFT art.

Solana

The Solana blockchain also supports non-fungible tokens.

History

Early history

Various parties have retrospectively claimed to have done things similar to the modern NFT, e.g. Anil Dash. However, the term only gained currency with the ERC-721 standard, first proposed in 2017 via the Ethereum Github, following the launch of various NFT projects that year. These include Curio Cards, CryptoPunks (a project to trade unique cartoon characters, released by the American studio Larva Labs on the Ethereum blockchain) and the Decentraland platform. All three projects were referenced in the original proposal along with Rare Pepe trading cards.

Public awareness (Late 2017–2021)

Public awareness in NFTs began with the success of CryptoKitties, an online game where players adopt and trade virtual cats. Soon after release, the project went viral, raising a $12.5 million investment, with some kitties selling for over $100,000 each. Following its success, CryptoKitties were added to the ERC-721 standard, which was created in January, 2018 (and finalized in June), and affirmed the use of the term "NFT" to refer to "non-fungible tokens."

In 2018, Decentraland, a blockchain-based virtual world which first sold its tokens in August 2017, raised $26 million in an initial coin offering, and had a $20 million internal economy as of September 2018. Following CryptoKitties' success, another similar NFT-based online game Axie Infinity was launched in March 2018, which then proceeded to become the most expensive NFT collection in May 2021.

In 2019, Nike patented a system called CryptoKicks that would use NFTs to verify the authenticity of physical sneakers and give a virtual version of the shoe to the customer.

In early 2020, the developer of CryptoKitties, Dapper Labs, released the beta version of NBA TopShot, a project to sell tokenized collectibles of NBA highlights. The project was built on top of Flow, a newer and more efficient blockchain compared to Ethereum. Later that year, the project was released to the public and reported over $230 million in gross sales as of February 28, 2021.

The NFT market experienced rapid growth during 2020, with its value tripling to $250 million. In the first three months of 2021, more than $200 million were spent on NFTs.

NFT buying surge (2021–present)

In 2021, interest in NFTs increased. Blockchains such as Ethereum, Flow, and Tezos established specific standards to ensure that the digital item represented are authentically one-of-a-kind. NFTs are now being used to commodify digital assets in art, music, sports, and other popular entertainment, with most NFTs part of the Ethereum blockchain, while other blockchains can implement their own versions of NFTs. A number of high-profile sales were made just in the first few months of the year. In February 2021, the musician Grimes sold around $6 million worth of tokens representing digital art on Nifty Gateway. Later that month, an NFT representing the meme animation Nyan Cat was sold in an Internet marketplace for just under $600,000. On February 28, 2021, electronic dance musician 3LAU sold a collection of 33 NFTs for a total of $11.7 million to commemorate the three-year anniversary of his Ultraviolet album. On March 5, 2021, the band Kings of Leon became the first to sell a newly released album, When You See Yourself, in the form of an NFT, generating a reported $2 million in sales. On March 11, 2021, American digital artist Beeple's work Everydays: The First 5000 Days became the first NFT artwork to be listed at prominent auction house Christie's and sold for $69.3 million. On March 22, 2021, Jack Dorsey, founder of Twitter and Square, sold an NFT representing his first tweet for over $2.5 million.

The speculative market for NFTs has led more investors to trade at greater volumes and rates. The NFT buying surge was called an economic bubble by experts, who also compared it to the Dot-com bubble. By mid-April 2021, demand appeared to have substantially subsided, causing prices to fall significantly; early buyers were reported to have "done supremely well" by Bloomberg Businessweek. An NFT of the source code of the World Wide Web, credited to internet inventor computer scientist Sir Tim Berners-Lee, was auctioned in June 2021 by Sotheby’s in London, and was sold for US$5.4 million.

In September 2021, Sotheby's sold a bundle of 101 Bored Ape Yacht Club NFTs for $24.4 million. On October 1, 2021, Christie's auctioned a full set of Curio Cards, plus the "17b" misprint, for ETH393 ($1.3 million at the time) – the first time live bidding at an auction was conducted in Ether. A Sotheby's sale later that month included a CryptoPunk, various cat-based NFTs and a Rare Pepe, PEPENOPOULOS, 2016, that sold for $3.6m. This was the first auction hosted on Sotheby's "Metaverse", a platform specifically dedicated to NFT collectors, intended to become a biannual event.

Popular culture

Popularity

In 2017, NFTs circulated by CryptoKitties, a project developed by Dapper Labs to sell ownership of unique cat avatars, jumped so much in popularity that a surge in demand took up significant transaction space on the Ethereum blockchain and slowed the entire Ethereum network in December of that year.

NFTs became increasingly popular in the early months of 2021 because of numerous high-profile sales, including an NBA Top Shot video clip of LeBron James for $208,000, a 3LAU album for $11.7 million, and a piece by digital artist Beeple for $69.3 million. NFT sales exceeded $220 million in March 2021 alone, making up nearly half of all-time NFT sales up to that point. This renewed interest in NFTs, particularly those in art, music, and sports, made way into public consciousness, especially amongst the younger generation. A comedy skit on the March 27, 2021 episode of Saturday Night Live satirized the popularity of NFTs; the skit was sold as an NFT itself for $365,000 on April 6, 2021.

In 2021, many investors have been willing to pay high rates to secure and promote NFTs, anticipating them to be the biggest and most profitable collectibles in the future. In April 2021, venture capitalist David Pakman claimed that the growing value of NFTs was redefining the major entertainment industry. Investors like Mark Cuban have proposed new ways of implementing NFT technology to monetize sports tickets and merchandise sales.

Criticism

Storage off-chain

NFTs involving digital art generally do not store the file on the blockchain due to its size. The token functions in a way more similar to a certificate of ownership, with a web address pointing to the piece of art in question, making the art still subject to link rot.

Environmental concerns

NFT purchases and sales are enmeshed in a controversy regarding the high-energy use, and consequent greenhouse gas emissions, associated with blockchain transactions. A major aspect of this is the proof-of-work protocol required to regulate and verify blockchain transactions on networks such as Ethereum, which consumes a large amount of electricity; Estimating the carbon footprint of a given NFT transaction involves a variety of assumptions about the manner in which that transaction is set up on the blockchain, the economic behavior of blockchain miners (and the energy demands of their mining equipment), as well as the amount of renewable energy being used on these networks. There are also conceptual questions, such as whether the carbon footprint estimate for an NFT purchase should incorporate some portion of the ongoing energy demand of the underlying network, or just the marginal impact of that particular purchase. An analogy that's been described for this is the footprint associated with an additional passenger on a given airline flight.

Some more recent NFT technologies use alternative validation protocols, such as proof of stake, that have much less energy usage for a given validation cycle. Other approaches to reducing electricity include the use of off-chain transactions as part of minting an NFT. A number of NFT art sites are also looking to address these concerns, and some are moving to using technologies and protocols with lower associated footprints. Others now allow the option of buying carbon offsets when making NFT purchases, although the environmental benefits of this have been questioned. In some instances, NFT artists have decided against selling some of their own work to limit carbon emission contributions.

Plagiarism and fraud

There have been examples of "artists having their work copied without permission" and sold as an NFT. After the artist Qing Han died in 2020, her identity was assumed by a fraudster and a number of her works became available for purchase as NFTs. Similarly, a seller posing as Banksy succeeded in selling an NFT supposedly made by the artist for $336,000 in 2021; with the seller in this case refunding the money after the case drew media attention.

A process known as "sleepminting" can also allow a fraudster to mint an NFT in an artist's wallet and transfer it back to their own account without the artist becoming aware. This allowed a white hat hacker to mint a fraudulent NFT that had seemingly originated from the wallet of the artist Beeple.

See also

• List of most expensive non-fungible tokens

References

1. Dean, Sam (2021-03-11). "$69 million for digital art? The NFT craze, explained". Los Angeles Times. Retrieved 2021-04-08.{{cite news}}: CS1 maint: url-status (link)
2. Frank, Robert (13 April 2021). "NFT sales top $2 billion in first quarter, with twice as many buyers as sellers". CNBC. Retrieved 1 July 2021.
3. Genç, Ekin (2021-10-05). "Investors Spent Millions on 'Evolved Apes' NFTs. Then They Got Scammed". Vice Media. Retrieved 2021-11-09.{{cite web}}: CS1 maint: url-status (link)
4. Wang, Andrew (2021-09-21). "The NFT scammers are here". The Verge. Retrieved 2021-11-09.
5. Dean, Sam (March 11, 2021). "$69 million for digital art? The NFT craze, explained". Los Angeles Times. Retrieved March 12, 2021.
6. ^ Kastrenakes, Jacob (2021-03-11). "Beeple sold an NFT for $69 million". The Verge. Archived from the original on 2021-03-21. Retrieved 2021-03-21.
7. "WTF Is an NFT, Anyway? And Should I Care?". Wired. ISSN 1059-1028. Retrieved 2021-03-13.
8. ^ Boscovic, Dragan. "How nonfungible tokens work and where they get their value – a cryptocurrency expert explains NFTs". The Conversation. Retrieved 2021-04-08.
9. Kastrenakes, Jacob (March 25, 2021). "Your Million-Dollar NFT Can Break Tomorrow If You're Not Careful". The Verge. Retrieved March 31, 2021.
10. "Want to Buy an NFT? Here's What to Know". The Wall Street Journal. March 13, 2021. Retrieved March 14, 2021.
11. "NFTS' Nifty Copyright Issues - Intellectual Property - Canada".
12. Patterson, Dan (March 4, 2021). "Blockchain company buys and burns Banksy artwork to turn it into a digital original". CBS News. Retrieved March 17, 2021.
13. Thaddeus-Johns, Josie (2021-03-11). "What Are NFTs, Anyway? One Just Sold for $69 Million". The New York Times. ISSN 0362-4331. Retrieved 2021-04-14.
14. ^ Reyburn, Scott (2021-03-11). "JPG File Sells for $69 Million, as 'NFT Mania' Gathers Pace". The New York Times. ISSN 0362-4331. Retrieved 2021-04-14.
15. Solomon, Tessa (2021-02-25). "Beeple NFT Artwork Sells for $6.6 M. Ahead of Viral Christie's Auction". ARTnews.com. Retrieved 2021-04-14.
16. León, Riley de (2021-10-01). "Doodles used to create Gary Vaynerchuk NFT collection sell for $1.2 million in Christie's auction". CNBC. Retrieved 2021-10-18.
17. Gonzalez, Oscar. "You can get a free DC x Palm NFT tomorrow. What to know about the digital tokens now". CNET. Retrieved 2021-10-19.
18. Nover, Scott. "Early NFT collection Curio Cards makes its debut at Christie's". Quartz. Retrieved 2021-10-19.
19. Sugiura, Eri (13 October 2021). "NFTs turn Japan's manga and anime into genuine art". Financial Times. Retrieved 4 November 2021.
20. Browne, Ryan (2021-06-15). "NFT sales are dropping but believers still see a future for digital collectibles". CNBC. Retrieved 2021-11-08.
21. "How a 10-second video clip sold for $6.6 million". Reuters. 2021-03-01. Retrieved 2021-03-22.
22. "NFTs in Practice – Non-Fungible Tokens as Core Component of a Blockchain-based Event Ticketing Application". Researchgate. Retrieved 2021-09-08.
23. "Golden Ticket: How NFTs Can Help Artists Profit From Ticket Resales". MiamiLaw. 12 April 2021. Retrieved 2021-09-08.
24. "NFTs: The future of ticketing?". IQ Mag. 6 May 2021. Retrieved 2021-09-08.
25. "How NFTs Are Set to Disrupt the Music Industry". Entrepreneur. Retrieved 2021-09-08.
26. "Everything You Need To Know About Non-Fungible Tokens (NFTs)". nerdable.com. Retrieved 2021-11-08.{{cite web}}: CS1 maint: url-status (link)
27. https://kotaku.com/good-riddance-steam-bans-games-that-feature-crypto-and-1847874385
28. "I Joined a Penguin NFT Club Because Apparently That's What We Do Now". The New York Times. 12 August 2021.
29. "Why Bored Ape Avatars Are Taking Over Twitter". The New Yorker. 30 July 2021.
30. "Virtual real estate plot sells for close to $1 mln". Reuters. 18 June 2021.
31. "Musicians will lose two-thirds of their income in 2020". BBC News. 2020-11-18. Retrieved 2021-05-07.
32. "Music-related NFT sales have topped $25m in the past month". Music Business Worldwide. 2021-03-12. Retrieved 2021-05-07.
33. ^ Brown, Abram. "Largest NFT Sale Ever Came From A Business School Dropout Turned Star DJ". Forbes. Retrieved 2021-05-20.
34. "Las Vegas DJ-producer makes millions selling NFTs". Las Vegas Review-Journal. 2021-05-01. Retrieved 2021-10-13.
35. Steele, Anne (2021-03-23). "Musicians Turn to NFTs to Make Up for Lost Revenue". Wall Street Journal. ISSN 0099-9660. Retrieved 2021-05-07.
36. "CEO of Sweet Talks NFT Partnership with Rapper Lil Pump". Cheddar. 2021-03-23. Retrieved 2021-03-29.
37. "Musician NFT Projects, Ranked by How Many F's I Can Give". Vulture. 2021-03-18. Retrieved 2021-03-29.
38. "Rappers and NFTs – How Hip-Hop Is Cashing In on Non-Fungible Tokens". XXL Mag. 2021-03-23. Retrieved 2021-03-29.
39. Halperin, Shirley (2021-04-21). "Mike Dean and Shepard Fairey Team for NFT Offering 'OBEY 4:22' (EXCLUSIVE)". Variety. Retrieved 2021-05-07.
40. "Eminem's First NFT Drop, 'Shady Con,' Includes One-of-a-Kind Slim Shady-Produced Beats". Billboard. Retrieved 2021-05-19.
41. "Deadpool posters can now be bought as NFTs". www.yahoo.com. Retrieved 2021-05-19.
42. Chmielewski, Dawn C. (2018-08-03). "'Deadpool 2' Jumps On The Digital Collectibles Bandwagon". Deadline. Retrieved 2021-05-19.{{cite web}}: CS1 maint: url-status (link)
43. Ravindran, Manori (2021-03-15). "NFT Craze Enters Film World: 'Claude Lanzmann' Documentary is First Oscar Nominee to Be Released as Digital Token (EXCLUSIVE)". Variety. Retrieved 2021-04-14.
44. "NFTs are Confusing Everyone, But the Newest Internet Token is Raking in the Memes". www.news18.com. 2021-03-22. Retrieved 2021-04-14.
45. "World's First Movie Score & Soundtrack For Sale As An NFT [EXCLUSIVE]". ScreenRant. 2021-04-30. Retrieved 2021-09-08.
46. "Kurup becomes the First Indian Film to Launch NFT Collectibles". The Week. Retrieved 2021-11-08.
47. Bosselman, Haley (2021-03-31). "'Godzilla vs. Kong' to Have First Major Motion Picture NFT Art Release". Variety. Retrieved 2021-04-14.
48. D'Alessandro, Anthony (2021-04-13). "Kevin Smith To Sell Horror Movie 'Killroy Was Here' As NFT, Launches Jay And Silent Bob's Crypto Studio". Deadline. Retrieved 2021-04-14.
49. Goldsmith, Jill (September 8, 2021). "Enderby Entertainment's Pandemic Film 'Zero Contact' To Premiere On New NFT Platform Vuele; Watch The Trailer – Update". Deadline Hollywood. Retrieved September 15, 2021.
50. Beatrice Verhoeven (July 7, 2021). "Anthony Hopkins Film 'Zero Contact' to Premiere as NFT on New Platform Vuele". TheWrap. Retrieved September 15, 2021.
51. "NFTs and me: meet the people trying to sell their memes for millions". The Guardian. 2021-06-23. Retrieved 2021-07-17.
52. "Iconic 'Doge' meme NFT breaks record, selling for $4 million". NBC News. Retrieved 2021-07-17.
53. "Charlie Bit Me NFT sale: Brothers to pay for university with auction money". BBC News. 2021-06-03. Retrieved 2021-07-17.
54. Griffith, Erin (2021-02-22). "Why an Animated Flying Cat With a Pop-Tart Body Sold for Almost $600,000". The New York Times. ISSN 0362-4331. Retrieved 2021-07-17.
55. "Zoë Roth sells 'Disaster Girl' meme as NFT for $500,000". BBC News. 2021-04-30. Retrieved 2021-07-17.
56. Arnovitz, Kevin (October 21, 2019). "How investing $150K in Spencer Dinwiddie would actually work". ESPN. Retrieved April 1, 2021.
57. "Sources: Spencer Dinwiddie to convert his NBA contract into a secured digital investment. Here's what that means". The Athletic. 2019-09-12. Retrieved 2021-04-01.
58. Beedham, Matthew (2019-12-10). "Nike now holds patent for blockchain-based sneakers called 'CryptoKicks'". TNW | Hardfork. Retrieved 2021-04-14.
59. Clark, Mitchell (2021-03-03). "People are spending millions on NFTs. What? Why?". The Verge. Retrieved 2021-04-14.
60. Dickson, EJ (16 March 2021). "Porn Creators Are Getting In on the NFT Craze". Rolling Stone. Retrieved 30 March 2021.
61. Cole, Samantha (19 March 2021). "'Building the Cockchain:' How NSFW Artists Are Shaping the Future of NFTs". Vice. Retrieved 30 March 2021.
62. ^ "UC Berkeley Will Auction NFTs for 2 Nobel Prize Patents | Inside Higher Ed". www.insidehighered.com. Retrieved 2021-05-29.
63. "The Fourth Pillar (UC Berkeley, 2021) | Foundation".
64. "Activist turns anti-Nazi act into commodified digital art". The Jerusalem Post | JPost.com. Retrieved 2021-10-13.
65. "Stanislovas Tomas im Interview: "NFTs können unsere Gesellschaft verändern"". BeInCrypto (in German). 2021-04-18. Retrieved 2021-10-13.
66. "Banksy art burned, destroyed and sold as token in 'money-making stunt'". BBC News. 2021-03-09. Retrieved 2021-10-13.
67. "Burnt Banksy's Inflammatory N.F.T. Not-Art". The New Yorker. 2021-05-08. Retrieved 2021-10-13.
68. Gallagher, Jacob (2021-03-15). "NFTs Are the Biggest Internet Craze. Do They Work for Sneakers?". Wall Street Journal. ISSN 0099-9660. Retrieved 2021-06-26.
69. ^ Thaddeus-Johns, Josie (2021-03-11). "What Are NFTs, Anyway? One Just Sold for $69 Million". The New York Times. ISSN 0362-4331. Retrieved 2021-06-26.
70. Salmon, Felix (March 12, 2021). "How to exhibit your very own $69 million Beeple". Axios. Retrieved March 13, 2021.
71. ^ Clark, Mitchell (March 11, 2021). "NFTs, explained". The Verge. Retrieved March 11, 2021.
72. "NFT blockchain drives surge in digital art auctions". BBC. March 3, 2021. Retrieved March 12, 2021.
73. "Memes for Sale? Making sense of NFTs". Harvard Law Today. Retrieved 26 June 2021.
74. Burton, Amber (2021-03-13). "Want to Buy an NFT? Here's What to Know". Wall Street Journal. ISSN 0099-9660. Retrieved 2021-06-26.
75. ^ Volpicelli, Gian (24 February 2021). "The bitcoin elite are spending millions on collectable memes". Wired UK.
76. ^ "NFTs are both priceless and worthless". Engadget. 2021-03-11. Retrieved 2021-04-09.
77. "Uniswap UNI Token was "Shining Star" of DeFi this Past Week, while Ethereum based NFTs Rising in Popularity, OKEx Reports". Crowdfund Insider. 2021-03-07. Retrieved 2021-04-09.
78. "EIP-721: ERC-721 Non-Fungible Token Standard". Ethereum Improvement Proposals. Retrieved 2021-04-05.
79. ^ "EIP-1155: ERC-1155 Multi Token Standard". Ethereum Improvement Proposals. Retrieved 2021-04-05.
80. Sparkes, Matthew (March 30, 2021). "NFT developers say cryptocurrencies must tackle their carbon emissions". NewScientist. Retrieved March 31, 2021.
81. Ponciano, Jonathan. "Solana Skyrockets To New High—Amassing Nearly $40 Billion In Market Value As Competition With Ethereum Heats Up". Forbes. Retrieved 2021-09-01.
82. ^ Dash, Anil (2021-04-02). "NFTs Weren't Supposed to End Like This". The Atlantic. Retrieved 2021-05-05.
83. ^ Entriken, William; Shirley, Dieter; Evans, Jacob; Natassia, Sachs (January 24, 2018). "EIP-721: Non-Fungible Token Standard". Ethereum Improvement Proposals. Retrieved October 28, 2021.{{cite web}}: CS1 maint: url-status (link)
84. Urbach, Nils (December 13, 2019). "NFTs in Practice – Non-Fungible Tokens as Core Component of a Blockchain-based Event Ticketing Application" (PDF). Fraunhofer Research Center, Finance and Information Management. Retrieved October 28, 2021.{{cite web}}: CS1 maint: url-status (link)
85. "Should You Buy a Bitcoin-Inspired Image of Lindsay Lohan?". Bloomberg.com. 2021-03-08. Retrieved 2021-04-07.
86. Abbruzzese, Jason (16 June 2017). "This ethereum-based project could change how we think about digital art". Mashable. Retrieved 2021-04-06.
87. Chevet, Sylve (2018-05-10). "Blockchain Technology and Non-Fungible Tokens: Reshaping Value Chains in Creative Industries". Rochester, NY. SSRN 3212662. {{cite journal}}: Cite journal requires |journal= (help)
88. "CryptoKitties Mania Overwhelms Ethereum Network's Processing". Bloomberg.com. 2017-12-04. Retrieved 2021-04-07.
89. "CryptoKitties raises $12M from Andreessen Horowitz and Union Square Ventures". TechCrunch. Retrieved 2021-04-07.
90. Cheng, Evelyn (2017-12-06). "Meet CryptoKitties, the $100,000 digital beanie babies epitomizing the cryptocurrency mania". CNBC. Retrieved 2021-04-07.
91. Entriken, William (June 22, 2018). "Move EIP 721 to Final (#1170) ethereum/EIPs@b015a86". GitHub. Retrieved November 7, 2021.{{cite web}}: CS1 maint: url-status (link)
92. Hankin, Aaron. "People are making more than 500% buying property that doesn't actually exist". MarketWatch. Retrieved 2021-04-07.
93. "How to Make a Killing in Virtual Real Estate". Bloomberg.com. 2018-06-12. Retrieved 2021-04-07.
94. Gallagher, Jacob (2021-03-15). "NFTs Are the Biggest Internet Craze. Do They Work for Sneakers?". Wall Street Journal. ISSN 0099-9660. Retrieved 2021-04-07.
95. "CryptoKitties developer launches NBA TopShot, a new blockchain-based collectible collab with the NBA". TechCrunch. Retrieved 2021-04-09.
96. Young, Jabari (2021-02-28). "People have spent more than $230 million buying and trading digital collectibles of NBA highlights". CNBC. Retrieved 2021-04-09.
97. "The NFT Market Tripled Last Year, and It's Gaining Even More Momentum in 2021". Morning Brew. Retrieved 2021-04-08.
98. "NFTs Are Shaking Up the Art World—But They Could Change So Much More". Time. Retrieved 2021-04-06.
99. Clark, Mitchell (2021-03-03). "People are spending millions on NFTs. What? Why?". The Verge. Retrieved 2021-04-15.
100. ^ Howcroft, Elizabeth (2021-03-17). "Explainer: NFTs are hot. So what are they?". Reuters. Retrieved 2021-04-06.
101. Kastrenakes, Jacob (2021-03-01). "Grimes sold $6 million worth of digital art as NFTs". The Verge. Retrieved 2021-04-07.
102. Griffith, Erin (2021-02-22). "Why an Animated Flying Cat With a Pop-Tart Body Sold for Almost $600,000". The New York Times. ISSN 0362-4331. Retrieved 2021-04-07.
103. Hissong, Samantha (2021-03-03). "Kings of Leon Will Be the First Band to Release an Album as an NFT". Rolling Stone. Retrieved 2021-05-19.
104. Hissong, Samantha (2021-03-09). "Music NFTs Have Gone Mainstream. Who's In?". Rolling Stone. Retrieved 2021-05-20.
105. "Beeple's masterwork: the first purely digital artwork offered at Christie's | Christie's". www.christies.com. Retrieved 2021-04-07.
106. ^ Thaddeus-Johns, Josie (February 24, 2021). "Beeple Brings Crypto to Christie's". The New York Times. Retrieved March 12, 2021.
107. "The Next Frontier of the NFT Gold Rush: Your Tweets". Wired. ISSN 1059-1028. Retrieved 2021-04-07.
108. Reyburn, Scott (2021-03-30). "Art's NFT Question: Next Frontier in Trading, or a New Form of Tulip?". The New York Times. ISSN 0362-4331. Retrieved 2021-05-03.
109. Small, Zachary (2021-04-28). "As Auctioneers and Artists Rush Into NFTs, Many Collectors Stay Away". The New York Times. ISSN 0362-4331. Retrieved 2021-05-03.
110. Tarmy, James; Kharif, Olga (April 15, 2021). "These Crypto Bros Want to Be the Guggenheims of NFT Art". Bloomberg Businessweek. Retrieved April 29, 2021.
111. Shaw, Anny. "NFT prices are plummeting. What could this mean for the art world?". CNN. Retrieved 2021-05-03.
112. "NFT representing Tim Berners-Lee's source code for the web to go on sale". The Guardian. 15 June 2021. Retrieved 30 June 2021.
113. "This Changed Everything: Source Code for WWW x Tim Berners-Lee, an NFT". sothebys.com. sothebys.com. Retrieved 15 June 2021.
114. "The web's source code is being auctioned as an NFT by inventor Tim Berners-Lee". cnbc.com. cnbc.com. 15 June 2021. Retrieved 15 June 2021.
115. Lawler, Richard (30 June 2021). "Sir Tim Berners-Lee's web source code NFT sells for $5.4 million". The Verge. VOX Media. Retrieved 30 June 2021.
116. Kastrenakes, Jacob (September 9, 2021). "A bunch of ape NFTs just sold for $24.4 million". The Verge. Retrieved October 29, 2021.{{cite web}}: CS1 maint: url-status (link)
117. Christie's (October 1, 2021). "Post-War to Present sale achieves its highest total: $34,409,820". Christie's.{{cite web}}: CS1 maint: url-status (link)
118. Dickens, Sean (October 27, 2021). "Debut Sotheby's 'Metaverse' auction sees record-breaking NFT sales". Yahoo! Finance. Retrieved October 29, 2021.{{cite web}}: CS1 maint: url-status (link)
119. AFP (New York) (14 October 2021). "Sotheby's ramps up NFT operations". France 24. Retrieved October 29, 2021.{{cite web}}: CS1 maint: url-status (link)
120. "CryptoKitties craze slows down transactions on Ethereum". BBC News. 2017-12-05. Retrieved 2021-04-06.
121. CryptoKitties. "CryptoKitties | Collect and breed digital cats!". CryptoKitties. Retrieved 2021-04-06.
122. Rapp, Timothy. "LeBron James Lakers Highlight Sells for Record $208K on NBA Top Shot". Bleacher Report. Retrieved 2021-04-06.
123. Reyburn, Scott (2021-03-11). "JPG File Sells for $69 Million, as 'NFT Mania' Gathers Pace". The New York Times. ISSN 0362-4331. Retrieved 2021-04-06.
124. Piven, Ben. "NFT craze: Why are non-fungible tokens all the rage?". www.aljazeera.com. Retrieved 2021-04-06.
125. "What are NFTs and why are they so popular?". MoneyWeek. Retrieved 2021-04-06.
126. MacColl, Margaux. "These Gen Z VCs are getting in on the NFT frenzy — here are the 4 NFTs they've collected so far". Business Insider. Retrieved 2021-04-06.
127. Jazmin Goodwin. "Still not sure what NFTs are? 'SNL' explains with Eminem parody". CNN. Retrieved 2021-04-06.
128. "If you haven't followed NFTs, here's why you should start". TechCrunch. Retrieved 2021-04-06.
129. "What are NFTs and why are they suddenly so popular?". euronews. 2021-04-02. Retrieved 2021-04-06.
130. "Why every major entertainment company will get into NFTs, according to the VC behind NBA Top Shot". news.yahoo.com. Retrieved 2021-04-06.
131. Locke, Taylor (2021-03-26). "Mark Cuban: The Dallas Mavericks are thinking about 'turning our tickets into NFTs'". CNBC. Retrieved 2021-04-06.
132. ^ Calma, Justine (2021-03-15). "The climate controversy swirling around NFTs". The Verge. Retrieved 2021-04-15.
133. Krause, Max; Tolaymat, Thabet (2018). "Quantification of energy and carbon costs for mining cryptocurrencies". Nature Sustainability. 1: 814. doi:10.1038/s41893-018-0188-8.
134. Gallersdorfer, Ulrich; Klassen, Lena; Stoll, Christian (2020). "Energy Consumption of Cryptocurrencies Beyond Bitcoin". Joule. 4 (9): 1843–1846. doi:10.1016/j.joule.2020.07.013. PMC 7402366. PMID 32838201.
135. deVries, Alex (2018-05-16). "Bitcoin's Growing Energy Problem". Joule.
136. Cuen, Leigh (2021-03-21). "The debate about cryptocurrency and energy consumption". TechCrunch.
137. De-Mattei, Shanti Escalante (2021-04-14). "Should You Worry About the Environmental Impact of Your NFTs?". Art News. Retrieved 2021-06-02.
138. Matney, Lucas (2021-03-30). "ConsenSys launches a more energy-efficient NFT ecosystem with a project from artist Damien Hirst as its first drop". Techcrunch. Retrieved 2021-04-21.
139. Di Liscia, Valentina (2021-04-05). "Does Carbon Offsetting Really Address the NFT Ecological Dilemma?". Hypoallergic. Retrieved 2021-04-21.
140. Howson, Peter. "NFTs: why digital art has such a massive carbon footprint". The Conversation. Retrieved 2021-04-06.
141. Williams, Rhiannon (2 April 2021). "NFT digital art: Would you pay millions of pounds for art you can't touch?". inews Technology. Retrieved 28 August 2021.
142. Kwan, Jacklin (28 July 2021). "An artist died. Then thieves made NFTs of her work". Wired. Retrieved 28 August 2021.
143. "Fake Banksy NFT sold through artist's website for £244k". BBC News. 31 August 2021.
144. ^ Schneider, Tim (21 April 2021). "The Gray Market: How a Brazen Hack of That $69 Million Beeple Revealed the True Vulnerability of the NFT Market (and Other Insights)". artnet news. Retrieved 28 August 2021.

External links

• ERC-721 Standard

• Blockchain games
• Non-fungible token
• Blockchain and auctions