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"NFT" redirects here. For other uses, seeNFT (disambiguation).

Illustration of a non-fungible token generated by asmart contract(a program designed to automatically execute contract terms)

Anon-fungible token(NFT) is a unique digital identifier that is recorded on ablockchainand is used to certify ownership and authenticity. It cannot be copied, substituted, or subdivided.[1]The ownership of an NFT is recorded in the blockchain and can be transferred by the owner, allowing NFTs to be sold and traded. Initially pitched as a new class ofinvestmentasset, by September 2023, one report claimed that over 95% of NFT collections had zero monetary value.[2][3]

NFTs can be created by anybody and require few or no coding skills to create. NFTs typically contain references todigital filessuch as artworks, photos, videos, and audio. Because NFTs are uniquely identifiable, they differ fromcryptocurrencies,which arefungible.

Proponents claim that NFTs provide a publiccertificate of authenticityorproof of ownership,but the legal rights conveyed by an NFT can be uncertain. The ownership of an NFT as defined by the blockchain has no inherent legal meaning and does not necessarily grantcopyright,intellectual propertyrights, or other legal rights over its associated digital file. An NFT does not restrict the sharing or copying of its associated digital file and does not prevent the creation of NFTs that reference identical files.

NFT trading increased from US$82 million in 2020 to US$17 billion in 2021.[4]NFTs have been used asspeculativeinvestments and have drawn criticism for the energy cost andcarbon footprintassociated with some types of blockchain, as well as their use inart scams.[5]The NFT market has also been compared to aneconomic bubbleor aPonzi scheme.[6]At their peak, the three biggest NFT platforms wereEthereum,Solana,andCardano.[7]In 2022, the NFT market collapsed; a May 2022 estimate was that the number of sales was down over 90% compared to 2021.[8]

Characteristics

An NFT is a data file, stored on a type of digital ledger called a blockchain, which can be sold and traded.[9]The NFT can be associated with a particular asset – digital or physical – such as an image, art, music, or recording of a sports event.[10]It may confer licensing rights to use the asset for a specified purpose.[11]An NFT (and, if applicable, the associated license to use, copy, or display the underlying asset) can be traded and sold on digital markets.[12]However, the extralegal nature of NFT trading usually results in an informal exchange of ownership over the asset that has no legal basis for enforcement,[13]and so often confers little more than use as a status symbol.[14]

NFTs function likecryptographictokens, but unlike cryptocurrencies, NFTs are not usually mutually interchangeable, so they are notfungible.[a]A non-fungible token contains data links, for example which point to details about where the associated art is stored, that can be affected bylink rot.[16]

NFT is ownable, the asset link may be ownable, and the ownership of the asset is not guaranteed
A diagram showing the right to own a non-fungible token and linked file. In most cases, it is heavily dependent on the token's smart contract.

An NFT solely represents a proof of ownership of a blockchain record and does not necessarily imply that the owner possessesintellectual propertyrights to the digital asset the NFT purports to represent.[17][18][19]Someone may sell an NFT that represents their work, but the buyer will not necessarily receive copyright to that work, and the seller may not be prohibited from creating additional NFT copies of the same work.[20][21]According to legal scholarRebecca 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."[22]

Certain NFT projects, such asBored Apes,explicitly assign intellectual property rights of individual images to their respective owners.[23]The NFT collectionCryptoPunkswas a project that initially prohibited owners of its NFTs from using the associated digital artwork for commercial use, but later allowed such use upon acquisition by the collection's parent company.[24]

History

Early projects

The first known "NFT",Quantum,[25]was created byKevin McCoyandAnil Dashin May 2014. It consists of a video clip made by McCoy's wife, Jennifer. McCoy registered the video on theNamecoinblockchain and sold it to Dash for $4, during a live presentation for theSeven on Sevenconferences at theNew Museumin New York City. McCoy and Dash referred to the technology as "monetized graphics".[26]This explicitly linked a non-fungible, tradable blockchain marker to a work of art, via on-chain metadata (enabled by Namecoin).[27]

In October 2015, the first NFT project, Etheria, was launched and demonstrated at DEVCON 1 in London, Ethereum's first developer conference, three months after the launch of theEthereumblockchain. Most of Etheria's 457 purchasable and tradable hexagonal tiles went unsold for more than five years until March 13, 2021, when renewed interest in NFTs sparked a buying frenzy. Within 24 hours, all tiles of the current version and a prior version, each hardcoded to 1 ETH (US$0.43 at the time of launch), were sold for a total ofUS$1.4 million.[28]

In 2016,Rare Pepesa "semi-fungible" NFT project centered around thePepe the Frog memeinvolving a collective of artists contributing their works into a curated directory, emerged on Bitcoin through a protocol known asCounterparty(which had been created in 2014 and used to create other assets).[29]

In 2017, several NFT projects emerged on Ethereum that utilized a "fungible" token standard known as ERC-20.Curio Cardsin May of that year is credited with being Ethereum's first art NFT project using the fungible standard and features artwork in the shape of a card among a variety of image types including satirized corporate logos[30]Thegenerative artproject of 10,000 pixelated characters known asCryptoPunksemerged soon after in June and would later establish itself as one of the most commercially successful NFT projects.[31]In December, aclipartbased collection featuring images of rocks calledEtherRockemerged.[32]

in November 2017, the widely acclaimedblockchain gameon Ethereum known asCryptoKittieslaunched and is credited with pioneering what is considered to be the first bona fide non-fungible token standard, known as ERC-721.[33]It used an early version of ERC-721 that differed from the formally published version of the standard in 2018.[34]

ERC-721: Non-Fungible Token Standard

While experiments around non-fungibility have existed on blockchains since as early as 2012 withColored Coinson Bitcoin,[35]a community-driven paper calledERC-721: Non-Fungible Token Standardwas published in 2018 under the initiative ofcivic hackerand lead authorWilliam Entriken[36]and is recognized as pioneering the foundation for NFTs and enabling the growth of the wider eco-system.[37]It introduced the formalization and defining of the termNon-Fungible Token"NFT" in blockchain nomenclature by establishing a standard forsmart contractsknown as "ERC-721" whose tokens would have unique attributes and ownership details, ensuring no two tokens are alike.[38]The creation of derivative standards followed from its influence on Ethereum (like ERC-1155 enabling semi-fungibility) and other blockchains.[39]Its versatility enabled the pioneering of numerous use cases, including digital artwork, deeds to physical items, real estate (including virtual), access passes, and game assets.[40]Ultimately, the emergence ofERC-721is recognized for having fundamentally changed the landscape of digital verification, authentication, and ownership.[41]

Origins of the term "NFT" and its adoption

The term NFT, prior to the blockchain gameCryptoKitties'adoption of ERC-721, is not known to have been used for earlier projects.[42]Through discussion among stakeholders for the ERC-721 draft, the worddeedwas given consideration among other alternatives includingdistinguishable asset, title, token, asset, equity, ticket.[43]Ultimately, through Entriken's initiative under the moniker "Fulldecent," a vote was held during the paper's drafting phase to decide which word would be used in the published version and "NFT" was chosen by the stakeholders.[44]

The term "NFT" and the awareness of the ERC-721 standard received significant exposure and adopted use through the popularity ofCryptoKittiesin 2017.[42]While using the standard,CryptoKittiesearned the recognition of being the first mainstream NFT dApp;[45]the game's usage was significant enough to have overwhelmed Ethereum's processing power at the time.[46]

Influence

During the height of the breakout success ofCryptoKittiesand the emergence of ERC-721 tokens in 2017, an NFT marketplace called OpenSea emerged to capitalize off of the new non-fungible token standard.[47]It positioned itself early in the NFT market landscape and grew to a $1.4 billion market cap in 2021 during the then-ongoing NFT boom.[48]

in 2021,ArtReview'sPower 100ranked ERC-721 at the #1 spot, praising it as "the most powerful art entity in the world" for creating a new kind of market for artworks that deviated from traditional gatekeeping norms and ushered in a different kind of collector.[49]ArtistBeeplesold an ERC-721 NFT of his composite artwork known asEverydays: The First 5000 DaysatChristie'sfor $69 million and was the first instance of a legacy arthouse dealing in NFTs.[50]

General NFT market

The NFT market experienced rapid growth during 2020, with its value tripling toUS$250 million.[51]In the first three months of 2021, more thanUS$200 million were spent on NFTs.[52]

In the early months of 2021, interest in NFTs increased after a number of high-profile sales and art auctions.[53]

In May 2022,The Wall Street Journalreported that the NFT market was "collapsing". Daily sales of NFT tokens had declined 92% from September 2021, and the number of active wallets in the NFT market fell 88% from November 2021. While rising interest rates had impacted risky bets across the financial markets, theJournalsaid "NFTs are among the most speculative."[8]

In December 2022, a programmer named Casey Rodarmor introduced a new way to add NFTs to the Bitcoin blockchain called "ordinals". By February 2023,the popularity of ordinals had led to an increase in bitcoin's payment fees and may have also partially contributed to an increase in bitcoin's price.[54]

A September 2023 report from cryptocurrency gambling website dappGambl claimed 95% of NFTs had fallen to zero monetary value.[2][3]

Uses

Commonly associated files

NFTs have been used to exchange digital tokens that link to a digital file asset. Ownership of an NFT is often associated with a license to use such a linked digital asset but generally does not confer the 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.[55]This kind of decentralized intellectual copyright poses an alternative to established forms of safeguarding copyright controlled by state institutions and middlemen within the respective industry.[56]

Digital art

See also:List of most expensive non-fungible tokens

Digital artis a common use case for NFTs.[57]High-profile auctions of NFTs linked to digital art have received considerable public attention; the first such major house auction took place at Christie's in 2021.[58]The work entitledMergeby artistPakwas the most expensive NFT, with an auction price ofUS$91.8 million[59]andEverydays: the First 5000 Days,by artistMike Winkelmann(known professionally as Beeple) the second most expensive atUS$69.3 million in 2021.[12][60]

Some digital art NFTs, like thesepixel artcharacters, are examples ofgenerative art.

Some NFT collections, includingBored Apes,EtherRocks,andCryptoPunks,are examples ofgenerative art,where many different images are created by assembling a selection of simple picture components in different combinations.[61]

In March 2021, the blockchain company Injective Protocol bought a $95,000 original screen print entitledMorons (White)from English graffiti artistBanksyand filmed somebody burning it with acigarette lighter.They uploaded (known as "minting" in the NFT scene) and sold the video as an NFT.[62][63]The person who destroyed the artwork, who called themselves "Burnt Banksy", described the act as a way to transfer a physical work of art to the NFT space.[63]

American curator and art historianTina Rivers Ryan,who specializes in digital works, said that art museums are widely not convinced that NFTs have "lasting cultural relevance."[64]Ryan compares NFTs to thenet artfad before thedot-com bubble.[65][66]In July 2022, after the controversial sale ofMichelangelo'sDoni Tondoin Italy, the sale of NFT reproductions of famous artworks was prohibited in Italy. Given the complexity and lack of regulation of the matter, theMinistry of Cultureof Italy temporarily requested that its institutions refrain from signing contracts involving NFTs.[67]

No centralized means of authentication exists to prevent stolen and counterfeit digital works from being sold as NFTs, although auction houses likeSotheby's,Christie's,and various museums and galleries worldwide started collaborations and partnerships with digital artists such asRefik Anadol,DangiuzandSarah Zucker.

NFTs associated with digital artworks could be sold and bought via NFT platforms.OpenSea,launched in 2017, was one of the first marketplaces to host various types of NFTs.[68][69]In July 2019, theNational Basketball Association,the NBA Players Association and Dapper Labs, the creator ofCryptoKitties,started a joint venture NBA Top Shot for basketball fans that let users buy NFTs of historic moments in basketball.[70][71]In 2020, Rarible was found, allowing multiple assets. In 2021, Rarible andAdobeformed a partnership to simplify the verification and security of metadata for digital content, including NFTs.[68]In 2021, a cryptocurrency exchangeBinance,launched its NFT marketplace.[72]In 2022, eToro Art byeTorowas founded, focusing on supporting NFT collections and emerging creators.[68][73]

Sotheby'sandChristie'sauction houses showcase artworks associated with the respective NFTs both in virtual galleries and physical screens, monitors, and TVs.[74][75][76]

Mars House, an architectural NFT created in May 2020 by artistKrista Kim,sold in 2021 for 288 Ether (ETH) — at that time equivalent to US$524,558.[77]

Games

Main article:Blockchain game

NFTs can representin-game assets.Some commentators describe these as being controlled "by the user" instead of thegame developer[78]if they can be traded on third-party marketplaces without permission from the game developer. Their reception from game developers, though, has been generally mixed, with some likeUbisoftembracing the technology butValveandMicrosoftformally prohibiting them.[79]

  • CryptoKitties was an early successful blockchain online game in which players adopt and trade virtual cats. The monetization of NFTs within the game raised a $12.5 million investment, with some kitties selling for over $100,000 each.[80][81][82][83]Following its success, CryptoKitties was added to the ERC-721 standard, which was created in January 2018 (and finalized in June).[84][85]
  • In October 2021,Valve Corporationbanned applications from theirSteamplatform if those applications useblockchaintechnology or NFTs to exchange value or game artifacts.[86]
  • In December 2021,Ubisoftannounced Ubisoft Quartz, "an NFT initiative which allows people to buy artificially scarce digital items using cryptocurrency". The announcement was heavily criticized by audiences, with the Quartz announcement video attaining a dislike ratio of 96% on YouTube. Ubisoft subsequently unlisted the video from YouTube.[87][88]The announcement was also criticized internally by Ubisoft developers.[89][90][91]TheGame Developers Conference's 2022 annual report stated that 70 percent of developers surveyed said their studios had no interest in integrating NFTs or cryptocurrency into their games.[92][93]
  • Some luxury brands minted NFTs for online video game cosmetics.[94]In November 2021, investment firmMorgan Stanleypublished a note claiming that this could become a US$56 billion market by 2030.[95]
  • In July 2022, Mojang Studios announced that NFTs would not be permitted inMinecraft,saying that they went against the game's "values of creative inclusion and playing together".[96]

Music and film

NFTs have been proposed for use within the film-industry as a way to tokenize movie-scenes and sell them as collectibles in the form of NFTs.[97]Artists involved in the entertainment-industry can seek royalties through NFTs.[98] So far, NFTs have often been used in both the music- as well as the film-industry.

  • In May 2018,20th Century Foxpartnered with Atom Tickets and released limited-editionDeadpool 2digital posters to promote the film. They were available fromOpenSeaand the GFT exchange.[99]
  • In March 2021,Adam Benzine's 2015 documentaryClaude Lanzmann: Spectres of the Shoahbecame the first motion picture and documentary film to be auctioned as an NFT.[100]
  • Other examples of NFTs being used in the film-industry include a collection of NFT-artworks forGodzilla vs. Kong,[101]the release of bothKevin Smith's horror-movieKillRoy Was Here,and the 2021 filmZero Contactas NFTs in 2021.[102]
  • In April 2021, an NFT was released for the score of the movieTriumph,composed by Gregg Leonard.[103]
  • In November 2021, film directorQuentin Tarantinoreleased seven NFTs based on uncut scenes ofPulp Fiction.Miramaxsubsequently filed a lawsuit claiming that their film rights were violated and that the original 1993 contract with Tarantino gave them the right to mint NFTs in relation toPulp Fiction.[104]
  • In August 2022, Muse released albumWill of the Peopleas 1,000 NFTs; it became the first album for which NFT sales would qualify for the UK and Australian charts.[105][106]

By February 2021, NFTs accounted forUS$25 million of revenue generated through the sale of artwork and songs as NFTs.[107]On February 28, 2021, electronic dance musician3lausold a collection of 33 NFTs for a total ofUS$11.7 million to commemorate the three-year anniversary of hisUltravioletalbum.[108][109]On March 3, 2021, an NFT was made to promote theKings of LeonalbumWhen You See Yourself.[110][111][112]Other musicians who have used NFTs include American rapperLil Pump,[113][114][115]Grimes,[116]visual artistShepard Faireyin collaboration with record producerMike Dean,[117]and rapperEminem.[118]

A paper presented at the40th International Conference on Information SystemsinMunichin 2019 suggested using NFTs as tickets for different types of events.[119]This would enable organizers of the respective events or artists performing there to receive royalties on the resale of each ticket.[120]

Other associated files

  • A number ofinternet memeshave been associated with NFTs, which were minted and sold by their creators or by their subjects.[121]Examples includeDoge,an image of aShiba Inudog,[122]as well asCharlie Bit My Finger,[123]Nyan Cat[124][125]andDisaster Girl.[126]
  • Some virtual worlds, oftenmarketedasmetaverses,have incorporated NFTs as a means of trading virtual items and virtual real estate.[127]
  • Somepornographicworks have been sold as NFTs, though hostility from NFT marketplaces towards pornographic material has presented significant drawbacks for creators.[128][129]By using NFTs people engaged in this area of the entertainment-industry are able to publish their works without third-party platforms being able to delete them.[130]
  • 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 29, 2021. In the video, Tomas uses a sledgehammer to destroy a state-sponsored Lithuanian plaque located on theLithuanian Academy of Scienceshonoring Nazi war criminalJonas Noreika.[131]
  • In 2020, CryptoKitties developer Dapper Labs released the NBA TopShot project, which allowed the purchase of NFTs linked to basketball highlights.[132]The project was built on top of the Flow blockchain.[133]
  • In March 2021 an NFT ofTwitterfounderJack Dorsey's first-ever tweet sold for $2.9 million. The same NFT was listed for sale in 2022 at $48 million, but only achieved a top bid of $280.[134]
  • On December 15, 2022,Donald Trump,formerpresident of the United States,announced a line of NFTs featuring images of himself for $99 each.[135]It was reported that he made between $100,001 and $1 million from the scheme.[136]

Use cases of NFTs in science and medicine

NFTs have been proposed for purposes related to scientific and medical purposes.[137]Suggestions include turning patient data into NFTs,[138]tracking supply chains[139]and minting patents as NFTs.[140]

The monetary aspect of the sale of NFTs has been used by academic institutions to finance research projects.

George M. Church sold NFTs of an "artistic representation" of his genome and likeness in 2022.
  • TheUniversity of California, Berkeleyannounced in May 2021 its intention to auction NFTs of two patents of inventions for which the creators had received aNobel Prize:the patents forCRISPR gene editingandcancer immunotherapy.The university would, however, retain ownership of the patents.[141][142]85% of funds gathered through the sale of the collection were to be used to finance research.[143][144]The collection included handwritten notices and faxes byJames Allisonand was namedThe Fourth Pillar.It sold in June 2022 for 22 Ether, aboutUS$54,000 at the time.[145]
  • George Church,a US geneticist, announced his intention to sell hisDNAvia NFTs and use the profits to finance research conducted byNebula Genomics.In June 2022, 20 NFTs with his likeness were published instead of the originally planned NFTs of his DNA due to the market conditions at the time.[137]Despite mixed reactions, the project is considered to be part of an effort to use the genetic data of 15,000 individuals to support genetic research. By using NFTs the project wants to ensure that the users submitting their genetic data are able to receive direct payment for their contributions.[137][146]Several other companies have been involved in similar and often criticized efforts to use blockchain-based genetic data in order to guarantee users more control over their data and enable them to receive direct financial compensation whenever their data is being sold.[145]
  • Molecule Protocol, a project based in Switzerland, is trying to use NFTs to digitize the intellectual copyright of individual scientists and research teams to finance research.[147]The project's whitepaper explains the aim is to represent the copyright of scientific papers as NFTs and enable their trade between researchers and investors on a future marketplace.[148]The project was able to raiseUS$12 million in seed money in July 2022.[147]A similar approach has been announced by RMDS Lab.[149]

Speculation

NFTs representing digital collectables and artworks are aspeculative asset.[150]The NFT buying surge was called aneconomic bubbleby experts, who also compared it to theDot-com bubble.[151][152]In March 2021Mike Winkelmanncalled NFTs an "irrational exuberance bubble".[153]By mid-April 2021, demand subsided, causing prices to fall significantly.[154]Financial theoristWilliam J. Bernsteincompared the NFT market to 17th-centurytulip mania,saying anyspeculative bubblerequires a technological advance for people to "get excited about", with part of that enthusiasm coming from the extreme predictions being made about the product.[155]For regulatory policymakers, NFTs have exacerbated challenges such as speculation, fraud, and high volatility.[156]

Money laundering

NFTs, as with other blockchain securities and with traditional art sales, can potentially be used formoney laundering.[157]NFTs can be used forwash tradingby creating severalwalletsfor one individual, generating several fictitious sales and consequently selling the respective NFT to a third party.[158]According to a report byChainalysisthese types of wash trades are becoming popular among money launderers because of the largely anonymous nature of transactions on NFT marketplaces.[159][160][161]Looksrare,created in early 2022, came to be known for the large sums generated through the sale of NFTs in its earliest days, amounting toUS$400,000,000 a day. These large sums were generated in large part through wash trading.[161]TheRoyal United Services Institutesaid that any risks in relation to money laundering through NFTs could be mitigated through the use of "KYCbest practices, strong cyber security measures and a stolen art registry (...) without restricting the growth of this new market ".[157]

Auction platforms for NFTs may face regulatory pressure to comply with anti-money laundering legislation. Gou Wenjun, the director of a monitoring centre for thePeople's Bank of China,said that NFTs could "easily become money-laundering tools". He pointed to unlawful exploitation of cryptographic technologies and said that illicit actors often presented themselves as innovators in financial technology.[162]

A 2022 study from theUnited States Treasuryassessed that there was "some evidence of money laundering risk in the high-value art market", including through "the emerging digital art market, such as the use of non-fungible tokens (NFTs)".[163]The study considered how NFT transactions may be a simpler option for laundering money through art by avoiding the transportation or insurance complications in trading physical art. Several NFT exchanges were labeled as virtual asset service providers that may be subject toFinancial Crimes Enforcement Networkregulations.[164]In March 2022, two people were charged for the execution of a million-dollar NFT scheme throughwire fraud.[165]

TheEuropean Commissionannounced in July 2022 that it was planning to draw up regulations to combat money laundering by 2024.[166][167]

Other uses

  • In 2019,Nikepatented a system called CryptoKicks that would use NFTs to verify the authenticity of its physical products and would give a virtual version of the shoe to the customer.[168]
  • Certain NFT releases have also added exclusivity to the NFT utility, including access to private online clubs.[169][170]

Standards in blockchains

Several blockchains have added support for NFTs since Ethereum created its ERC-721 standard.[171][172]

ERC-721 is an "inheritable"smart contractstandard, which means that developers can create contracts by copying from a reference implementation. ERC-721 provides core methods that allow tracking the owner of a unique identifier, as well as a way for the owner to transfer the asset to others.[171]Another standard, ERC-1155, offers "semi-fungibility" whereby a token represents a class of interchangeable assets.[173]

Issues and criticisms

Unenforceability of content ownership

As an image on the web, the digital art linked to a non-fungible token may be right-clicked and saved like any other picture file.

Because the contents of NFTs are publicly accessible, anybody can easily copy a file referenced by an NFT. Furthermore, the ownership of an NFT on the blockchain does not inherently convey legally enforceableintellectual propertyrights to the file.

It has become well known that an NFT image can be copied or saved from a web browser by using aright click menuto download the referenced image. NFT supporters disparage this duplication of NFT artwork as a "right-clicker mentality". One collector quoted byVicecompared the value of a purchased NFT (in contrast to an unpurchased copy of the underlying asset) to that of astatus symbol"to show off that they can afford to pay that much".[14]

The "right-clicker mentality" phrase spread virally after its introduction, particularly among those who were critical of the NFT marketplace and who appropriated the term to flaunt their ability to capture digital art backed by NFT with ease.[14]This criticism was promoted by Australian programmer Geoffrey Huntley who created "The NFT Bay", modeled afterThe Pirate Bay.The NFT Bay advertised atorrent filepurported to contain 19terabytesof digital art NFT images. Huntley compared his work to an art project fromPauline Pantsdownand hoped the site would help educate users on what NFTs are and are not.[174]

Storage off-chain

NFTs that represent digital art generally do not store the associated artwork file on the blockchain due to the large size of such a file and the limited processing speed of blockchains. Such a token functions like a certificate of ownership, with aweb addressthat points to the piece of art in question; this however makes the art itself vulnerable tolink rot.[26]

Environmental concerns

See also:Environmental impact of bitcoin

NFT purchases and sales have been enabled by the high energy usage, and consequentgreenhouse gas emissions,associated with some kinds of blockchain transactions.[175]Though all forms of Ethereum transactions have had an impact on the environment, the direct impact of these transaction has also depended on the size of the transaction.[176]Theproof-of-workprotocol required to regulate and verify blockchain transactions on networks (includingEthereumuntil 2022) consumes a large amount of electricity.[177][178]To estimate thecarbon footprintof a given NFT transaction requires a variety of assumptions or estimations 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),[179]and the amount of renewable energy being used on these networks.[180]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.[181]An analogy might be the carbon footprint associated with an additional passenger on a given airline flight.[175]

In 2022, Ethereum cut its energy usage by 99.99 percent by switching toproof of stake.[182][183]Other approaches to reducing electricity include the use of off-chain transactions as part of minting an NFT.[175]Some NFT markets have offered the option of buying carbon offsets when making NFT purchases, although the environmental benefits of this have been questioned.[184]In some instances, NFT artists have decided against selling some of their own work to limit carbon emission contributions.[185]

Artist and buyer fees

Sales platforms charge artists and buyers fees for minting, listing, claiming, and secondary sales. Analysis of NFT markets in March 2021, in the immediate aftermath of Beeple's "Everydays: the First 5000 Days" selling forUS$69.3 million, found that most NFT artworks were selling for less thanUS$200, with a third selling for less thanUS$100.[186]Those selling NFTs below $100 were paying platform fees between 72.5% and 157.5% of that amount. On average the fees make up 100.5% of the price, meaning that such artists were on average paying more money in fees than they were making in sales.[186]

Plagiarism and fraud

There have been cases of artists and creators having their work sold by others as an NFT without permission.[187]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.[188]Similarly, a seller posing asBanksysucceeded in selling an NFT supposedly made by the artist for $336,000 in 2021; the seller refunded the money after the case drew media attention.[189]In 2022, it was discovered that as part of their NFT marketing campaign, an NFT company that voice actorTroy Bakerannounced his partnership with had plagiarized voice lines generated from15.ai,a freeAItext-to-speechproject.[190][191][192]

The anonymity associated with NFTs and the ease with which they can be forged make it difficult to pursue legal action against NFT plagiarists.[193]

In February 2023, artist Mason Rothschild was ordered to pay $133,000 in damages toHermèsby a New York court, after a jury sided with the copyright holder, for his 2021 digital depictions of the brand'sBirkin handbag.[194]

Some NFT marketplaces responded to cases of plagiarism by creating "takedown teams" to respond to artist complaints. The NFT marketplaceOpenSeahas rules against plagiarism anddeepfakes(non-consensual intimate imagery). Some artists criticized OpenSea's efforts, saying they are slow to respond to takedown requests and that artists are subject to support scams from users who claim to be representatives of the platform.[76]Others argue that there is no market incentive for NFT marketplaces to crack down on plagiarism.[193]

  • A process known as "sleepminting" allows a fraudster to mint an NFT in an artist's wallet and transfer it back to their own account without the artist becoming aware.[195]This allowed awhite hathacker to mint a fraudulent NFT that had seemingly originated from the wallet of the artistBeeple.[195]
  • Plagiarism concerns led the art websiteDeviantArtto create an algorithm that compares user art posted on the DeviantArt website against art on popular NFT marketplaces. If the algorithm identifies art that is similar, it notifies and instructs the author how they can contact NFT marketplaces to request that they take down their plagiarized work.[76]
  • The BBC reported a case of insider trading when an employee of the NFT marketplaceOpenSeabought specific NFTs before they were launched, with prior knowledge those NFTs would be promoted on the company's home page. NFT trading is an unregulated market in which there is no legal recourse for such abuses.[196]
  • WhenAdobeannounced they were adding NFT support to their graphics editorPhotoshop,the company proposed creating anInterPlanetary File Systemdatabase as an alternative means of establishing authenticity for digital works.[197]
  • The price paid for specific NFTs and the sales volume of a particular NFT author may be artificially inflated bywash trading,which is prevalent due to a lack of government regulation on NFTs.[198][199]

Security

In January 2022, it was reported that some NFTs were being exploited by sellers to unknowingly gather users'IP addresses.The "exploit" works via the off-chain nature of NFT, as the user's computer automatically follows a web address in the NFT to display the content. The server at the address can then log the IP address and, in some cases, dynamically alter the returned content to show the result. OpenSea has a particular vulnerability to this loophole because it allows HTML files to be linked.[200]

Pyramid/Ponzi scheme claims

Critics compare the structure of the NFT market to apyramidorPonzi scheme,in which early adopters profit at the expense of those buying in later.[201]In June 2022,Bill Gatesstated his belief that NFTs are "100% based ongreater fool theory".[202]

"Rug pull" exit scams

A "rug pull" is a scam, similar to anexit scamor apump and dumpscheme, in which the developers of an NFT or other blockchain project hype the value of a project to pump up the price and then suddenly sell all their tokens to lock in massive profits or otherwise abandon the project while removing liquidity, permanently destroying the value of the project.[203]

See also

Notes

  1. ^While all bitcoins are equal, each NFT may represent a different underlying asset and thus may have a different value.[15]

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