Hvad er en NFT? Hvordan virker NFT'er?
โก Smart opsummering
What is an NFT? An NFT, or non-fungible token, is a unique cryptographic asset recorded on a blockchain. Its identification codes and metadata prove authenticity and ownership, making each token impossible to replicate.

Hvad er en NFT?
NFT stรฅr for 'non-fungible token'. NFT'er er kryptografiske aktiver pรฅ en digital hovedbog kaldet blockchain. NFT'er indeholder unikke identifikationskoder og metadata, som adskiller dem fra hinanden.
However, unlike cryptocurrencies, you cannot trade or exchange NFTs equivalently. This makes them different from fungible tokens like cryptocurrencies, which are identical to each other. That is why bitcoins and altcoins can serve as a medium of exchange for commercial transactions, while NFTs cannot.
Hvad er Fungibility?
Fungibilitet er den evne, der hjรฆlper med at udveksle et aktiv med et lignende aktiv uden at miste dets vรฆrdi. Det definerer et aktivs egenskaber, sรฅsom delelighed og vรฆrdi.
For eksempel en Bitcoin er altid lig med en anden Bitcoin, just like one dollar is equivalent to another dollar. Similarly, if you lend your friend a $20 note, he/she does not need to repay that money with the same $20 note โ any $20 note will do.
Ikke-fungible ting er ikke udskiftelige og har unikke egenskaber. Dette gรธr dem drastisk forskellige, selvom de kan ligne hinanden.
There are several examples of nonfungible items in the real world, such as drama event tickets, paintings, etc. For example, two paintings may look similar, but they may have different levels of rarity. Similarly, front-row theatre tickets are much more valuable than tickets for the back row.
Hvad er kendetegnene ved NFT'er?
Ikke-fungible tokens er uhyre kraftige tokens, der tillader fleksible metoder til at reprรฆsentere ikke-fungible aktiver pรฅ en blockchain.
De vigtigste egenskaber ved NFT'er er:
- Enestรฅende: NFT tokens contain coded information that describes each tokenโs properties and makes it unique from other tokens. For example, a piece of digital art might have coded information about its pixels, while tokenized in-game items store details like which player owns an item and its other attributes.
- Tracmulig: All non-fungible tokens have a record of transactions on the blockchain from their creation, including every time they changed hands. That means each token is verifiably authentic. This is particularly important for owners and potential buyers of tokens.
- Sjรฆlden: At lave ikke-fungible tokens pรฅtractive for buyers, their supply should be limited. This makes the assets more desirable for a longer period, and also, the supply should not exceed demand.
- Udelelige: NFTs cannot be transacted as fractions of a whole, just as one cannot purchase half of a concert ticket or trading card. Moreover, you cannot split non-fungible tokens into smaller denominations.
- Programmerbar: Ligesom alle traditionelle digitale aktiver og tokens bygget pรฅ smart contracI forbindelse med blockchains er NFT'er ogsรฅ programmerbare.
Kort historie om NFT'er
NFT tokens have been around longer than most people realize. After Bitcoin blev lanceret i 2009 og den indledende eksplosion i token typer som Ethereum, Rippleog Litecoin, many people were looking to innovate on blockchain technology to create newer and more powerful tokens.
Her er en kort historie om NFT'er:
Farvede mรธnter
The earliest non-fungible tokens were colored coins, which Yoni Assia first proposed in March 2012. These were small Bitcoin enheder kaldet satoshi, der var "farvet" med specifikke egenskaber udviklet vha Bitcoinโs scripting language. In this way, a satoshi (the smallest portion of a bitcoin) could represent any asset you can imagine.
modpart
modpart was founded in 2014. It built on the idea of colored coins to issue non-fungible and semi-fungible tokens, and it supports many features that allow robust asset creation and trading platforms.
In 2015, the mobile game Spells of Genesis became the first game to issue in-game assets onto a blockchain. In 2016, the trading card game Force of Will โ then the fourth most popular trading card game in North America, behind household names such as Magic: The Gathering, Pokรฉmon, and Yu-Gi-Oh! โ launched its cards on Counterparty.
However, blockchain-based game assets would continue to emerge. Another major innovation came in 2016, when people started issuing limited edition Rare Pepes on Counterparty, based on the popular meme character Pepe the Frog.
Cryptopunks
John Watkinson and Matt Hall created Cryptopunks in June 2017. It was one of the first non-fungible token projects on the Ethereum blockchain. The project was developed by the American studio Larva Labs and was acquired by Yuga Labs in 2022.
CryptoPunks founders allowed anyone to claim the Punks for free. Different Punk types and attributes have different rarities, and certain combinations of rare or desirable traits make some Punks especially valuable.
CryptoKitties
CryptoKitties blev grundlagt i oktober 2017. Det var et virtuelt spil, der gjorde det muligt for spillere at opdrรฆtte, opdrรฆtte og handle virtuelle katte med unikke genomer, som pรฅvirkede deres udseende.
During the late-2017 boom, CryptoKitties rose exponentially in value, with one rare CryptoKitty selling for 600 ETH. The project made appearances on mainstream media everywhere, including CNN, CNBCog Financial Times.
Hvordan fungerer NFT'er?
NFTs are immutable tokens that use blockchain infrastructure. With the help of this technology, digital storage of all visual, written, and audio works can be achieved. Many NFT tokens are part of the Ethereum blockchain. Ethereum is a cryptocurrency like Bitcoin og Litecoin as well as an infrastructure for launching your own blockchain projects, and it natively supports NFTs. Since September 2022, Ethereum has run on a proof-of-stake consensus mechanism, which cut the networkโs energy consumption by over 99% compared to its earlier proof-of-work system.
Each NFT has metadata processed with a cryptographic hash function, an algorithm that computes a unique string of letters and numbers. NFTs also help you to create asset interoperability across numerous platforms. Also read โ Sรฅdan mine Ethereum
Vigtige standarder for ikke-fungible tokens (NFT)
Der findes flere rammer pรฅ tvรฆrs af flere netvรฆrk til oprettelse og udstedelse af ikke-fungible tokens. NFT'er er interoperable, hvilket betyder, at de kan udveksles eller handles pรฅ tvรฆrs forskellige udvekslinger med lethed.
Her er nogle vigtige NFT-standarder:
ERC-721
ERC-721 is a widely used token standard originally proposed in 2017 and written in Solidity (a programming language) on the Ethereum blockchain. It was the first widely adopted standard for creating non-fungible tokens for digital collectibles.
ERC-1155
ERC-1155 er en forbedret tokenstandard, der muliggรธr smart contracts to manage fungible and non-fungible tokens at the same time. This token standard helps identifiers represent multiple classes of assets.
Sรฅdan overfรธres et ikke-fungibelt token
You can transfer non-fungible tokens in the same way as cryptocurrencies. Some of them may vary in the degree to which they can be transferred and traded. Most NFTs can be traded within their existing game or creation platform, and blockchains make ownership and trading of NFTs easy on open marketplaces.
The blockchainโs open marketplace style helps non-fungible tokens to be transferred between users. For example, they can be sold in auctions or placed for sale in exchange for cryptocurrency. Blockchain technology creates a digital record of each transaction for the non-fungible asset.
Fordele ved NFT'er
Advantages of NFTs are:
- De kan overfรธres: I modsรฆtning til bรธrshandlede kryptovalutaer kan NFT'er kรธbes eller sรฆlges pรฅ sรฆrlige markedspladser. Men deres vรฆrdi afhรฆnger af deres unikke karakter.
- De er autentiske: Non-fungible tokens are powered by blockchain technology that makes NFTs genuine. Therefore, it is almost impossible to create counterfeits with a decentralized and immutable ledger.
- Bevar ejerskabsrettigheder: NFTs use decentralized platforms where no one can change the ownership record once it is programmed.
Risks and Limitations of NFTs
While NFTs open new possibilities for digital ownership, they also carry risks that beginners should understand before buying or minting a token.
Market volatility is the most visible risk. The value of an NFT depends entirely on what buyers are willing to pay, and prices can fall sharply when demand fades, as the market decline after 2021 showed. An NFT also proves ownership of a token, not necessarily copyright over the underlying artwork, so buyers should always check which rights a purchase actually includes.
Fraud is another concern. Scammers sometimes mint tokens of artwork they do not own, a practice known as copyminting, or abandon projects after collecting funds. Storage adds a final limitation: if the image linked to an NFT is hosted on an ordinary web server rather than a decentralized network such as IPFS, that file can disappear even though the token itself remains on the blockchain.
Top NFT-projekter
Her er nogle af de bedste NFT-projekter:
- OpenSea : It is one of the most popular marketplaces for NFT art and collectibles. This platform has listed items ranging from ENS to virtual land or pets. This marketplace allows you to purchase using several virtual currencies like ETH and DAI.
- Rarible : Rarible is a community-focused marketplace for non-fungible token artwork. Apart from buying and selling NFTs, you can also create your own tokens on it. The platform rewards active users with its RARI governance token, which gives them a voice in platform decisions.
- Ethereum Name Service : ENS er et domรฆnenavnsserviceprojekt, der kom til live i midten af โโ2017. ETH-domรฆnenavnene er NFT'er, der bruger Ethereum's ERC-721 standard og kan handles pรฅ NFT markedspladser.
- Decentraland : Det er en af โโde fรธrende markedspladser, der fokuserede pรฅ en distribueret virtuel verden. Pรฅ denne side kan deltagerne kรธbe virtuel jord. De kan ogsรฅ skabe virtuelle scener, kunstvรฆrker osv. ved hjรฆlp af et simpelt Builder-vรฆrktรธj og deltage i begivenheder for at vinde prรฆmier. Desuden har hver "indbygger" et sรฆrligt identificerende digitalt pas.
- Tezos : It is an open-source blockchain platform for digital assets and applications. It helps you create smart contracts og bygge decentraliserede applikationer, der ikke kan censureres eller lukkes ned af tredjeparter.
NFT eksempler
In theory, the scope for NFTs is anything unique that requires provable ownership.
Her er nogle eksempler pรฅ NFT'er, der findes i dag for at hjรฆlpe dig med at fรฅ ideen:




