NFT Guide: What Are Non-Fungible Tokens and How Do They Work?

How NFTs Work: The Technical Reality

An NFT is a smart contract token with a unique identifier on a blockchain. The ERC-721 standard (Ethereum) defines the minimum interface: each token has a unique ID, an owner address, and can be transferred. The smart contract maps token IDs to owner addresses, recording provenance on an immutable public ledger.

What the NFT actually stores: The token itself contains very little data — just the unique ID and ownership record. The associated artwork or media is typically stored separately, with the NFT containing a URL (the "tokenURI") pointing to a JSON metadata file, which in turn points to an image file. This creates a critical weakness: if the metadata server or image hosting goes offline, the NFT is essentially a pointer to nothing. IPFS (InterPlanetary File System) and Arweave address this by providing decentralized, content-addressed storage.

ERC-721 vs ERC-1155: ERC-721 creates truly unique, one-of-one tokens. ERC-1155 (multi-token standard) allows both fungible and non-fungible tokens in a single contract — enabling limited editions (e.g., 100 copies of the same item). ERC-1155 is more gas-efficient for batch operations and is widely used in gaming and digital trading cards.

The NFT Market: Rise, Crash & Current State

The NFT market experienced one of the most dramatic asset bubbles in financial history during 2021-2022. Driven by DeFi summer profits seeking new speculative outlets, celebrity endorsements, and viral media coverage, NFT trading volume reached $17.6 billion in Q1 2022 alone. Blue-chip collections like Bored Ape Yacht Club (BAYC) had floor prices reaching 150+ ETH (~$450,000).

The crash was equally dramatic. By Q4 2022, NFT trading volume had declined 97% from peak. The BAYC floor fell below 30 ETH by 2023. Hundreds of collections became effectively worthless — the 10,000-item generative art formula that defined the 2021 bull market was massively overproduced. Wash trading (buying and selling to oneself to inflate volume metrics) was exposed as prevalent across many collections and marketplaces.

Legitimate NFT Use Cases in 2026

NFT Risks and Fraud

The NFT market has significant fraud and risk vectors that investors must understand:

• ⚠Wash trading: creators or owners buying their own NFTs to inflate price history and perceived value
• ⚠Rug pulls: project teams abandoning projects after minting, taking community funds and developer wallets
• ⚠Fake collections: impersonating popular collections (subtle name/image changes) on secondary markets
• ⚠Phishing: fake minting sites, Discord DMs, or approval requests draining wallets
• ⚠Copyright infringement: NFTs minted of artwork without the original creator's permission
• ⚠Metadata centralization: if project servers go offline, NFT images/metadata become unavailable
• ⚠Smart contract vulnerabilities: poorly coded contracts can be exploited to steal NFTs

NFT Tax Treatment

NFTs are taxed as property under IRS Notice 2014-21. Key considerations: (1) Buying an NFT with ETH is a crypto-to-property exchange — you realize a capital gain on the ETH. (2) Selling an NFT for ETH creates a gain/loss based on the ETH price difference from your NFT cost basis. (3) Creating and selling NFTs as an artist/creator generates ordinary self-employment income. (4) Collectibles may be subject to 28% long-term capital gains rate rather than the standard 0/15/20% — the IRS issued a notice in 2023 that NFTs qualifying as "collectibles" under IRC 408(m) would be subject to the 28% rate. Consult a tax professional to determine if your NFTs qualify as collectibles.

NFT Valuation: What Determines an NFT's Price?

NFT pricing is notoriously opaque, but several structural factors drive market values. Understanding them helps buyers distinguish genuine demand from artificial inflation.

Trait rarity and rarity scores: Generative art collections (10,000-item PFP projects) assign each item a combination of traits — background, clothing, accessories, expression — with varying frequencies. Rarity scores aggregate the statistical rarity of each trait to rank items within a collection. Platforms like OpenRarity (open standard) and legacy Rarity.Tools provide these rankings, and rarer items typically command significant price premiums. A "1-of-1" background trait appearing in only 0.1% of a collection can multiply an NFT's floor price several times over.

Floor price mechanics: The floor price is the lowest asking price for any item in a collection at a given moment — in effect, the cheapest way to gain exposure to that collection. Floor price reflects the highest bid on the lowest-priced item available, making it susceptible to manipulation via wash trading and thin order books. During market dislocations, the floor can drop 50-70% in hours if large holders list simultaneously.

Appraisal value vs floor price: High-rarity items within a collection may trade at 10x-50x the floor price. However, appraisal value for rare NFTs is highly subjective and depends on finding a specific buyer who values the rarity premium — creating significant liquidity risk. During market downturns, rare items often fall more in percentage terms than floor items because the pool of buyers willing to pay the premium shrinks faster.

Wash trading effects: Wash trading — selling an NFT to a wallet you also control — artificially inflates trading volume and price history, creating a misleading track record of demand. Academic studies and blockchain analytics firms (Chainalysis, Nansen) have estimated that 40-80% of NFT volume on certain platforms was wash trading at peak market activity. Always cross-reference multiple data sources before assessing genuine price history.

• →Provenance and creator reputation: NFTs from established artists, major auction houses (Christie's, Sotheby's), or celebrity-associated projects carry significant reputation premiums. Beeple's works, Larva Labs CryptoPunks, and Art Blocks curated series maintain premium value partly because of creator credibility, not just rarity mechanics.
• →Utility-backed vs speculative PFPs: NFTs attached to real utility — event access, game assets, governance rights, revenue sharing — have a valuation floor tied to the utility itself. Pure profile-picture (PFP) collections without utility are entirely speculative, depending on community strength and cultural cachet.
• →Liquidity discount vs blue-chip premium: NFTs from established blue-chip collections (CryptoPunks, BAYC) trade at a liquidity premium because buyers trust secondary market depth. Unknown collections trade at a discount reflecting illiquidity risk — you may not be able to exit at any reasonable price.

Major NFT Marketplaces: Fees and Features Compared

The NFT marketplace landscape has evolved significantly since 2021. Fee competition has driven many platforms to zero or near-zero platform fees, while royalty enforcement has become a major controversy dividing creator and trader communities.

The royalty enforcement debate is central to the NFT ecosystem's creator economy. Creator royalties — typically 2.5-10% of the secondary sale price automatically directed to the original creator — were a major reason artists embraced NFTs. However, zero-fee platforms like Blur made royalties optional to attract trader volume. OpenSea capitulated by making royalties optional in 2023, triggering significant creator backlash. On-chain enforced royalties (via smart contract restrictions that block transfers on non-compliant marketplaces) are technically possible but reduce liquidity. As of 2026, the market has not resolved this tension, though Foundation and Manifold maintain creator-first royalty policies.

Bitcoin Ordinals and Cross-Chain NFTs

The NFT concept has spread beyond Ethereum to multiple blockchains, each with distinct properties, standards, and trade-offs.

Bitcoin Ordinals: In January 2023, developer Casey Rodarmor launched the Ordinals protocol, enabling data inscription directly into Bitcoin's transaction witness data — the portion of a transaction expanded by the SegWit upgrade. Each satoshi (0.00000001 BTC) can be assigned an ordinal number based on the order it was mined, and arbitrary data (images, text, code) can be permanently inscribed alongside it. The result is a Bitcoin-native NFT with a critical distinction from Ethereum NFTs: the content is stored entirely on-chain, embedded in the Bitcoin blockchain itself with the same immutability and permanence as Bitcoin transactions. Ethereum NFTs, by contrast, almost always store metadata and images off-chain (on IPFS or centralized servers).

BRC-20 tokens vs Ordinals: BRC-20 tokens are a fungible token standard built on the Ordinals protocol, mimicking Ethereum's ERC-20 but on Bitcoin. They use JSON inscriptions to define token deployments, mints, and transfers. BRC-20s gained significant speculative interest in 2023, temporarily driving Bitcoin transaction fees to multi-year highs as inscription activity competed for block space. Unlike Ordinals NFTs (which inscribe unique content), BRC-20 tokens are fungible — meaning each unit of a given token is identical.

Solana NFTs: Solana NFTs use the Metaplex standard and have grown into a major market, particularly for gaming assets and lower-cost generative art collections. Metaplex's compressed NFTs (introduced 2023) enable minting millions of NFTs at negligible cost by using Merkle tree proofs stored on-chain — reducing the cost of minting from ~$50 on Ethereum to fractions of a cent on Solana. This enabled large-scale applications like gaming item distribution and digital loyalty programs.

• →Archival permanence: On-chain inscriptions (Bitcoin Ordinals) have a fundamental advantage for archival purposes: the data's permanence is tied to Bitcoin's blockchain, which has operated continuously since 2009. Off-chain metadata NFTs depend on continued server operation or IPFS pinning — a dependency that has already caused thousands of "broken" NFTs from 2017-2021 projects.
• →Multi-chain landscape 2026: Ethereum remains dominant for high-value NFT collections. Bitcoin Ordinals have established a premium "digital artifact" market. Solana dominates gaming NFTs and high-volume consumer applications. Cross-chain bridges for NFTs exist but carry smart contract risks typical of all bridge infrastructure.

How to Create and Mint an NFT: Step-by-Step

Creating an NFT requires a crypto wallet, some cryptocurrency for gas fees, and content you have the rights to mint. The process varies by blockchain and marketplace but follows a common structure.

• →Step 1 — Wallet setup: For Ethereum NFTs, install MetaMask (browser extension or mobile app) and create a wallet, securing your 12-word seed phrase offline. For Solana NFTs, Phantom wallet is the standard choice. Never store your seed phrase digitally or share it with any website.
• →Step 2 — Fund your wallet: Purchase ETH or SOL on a centralized exchange (Coinbase, Kraken) and withdraw to your wallet address. For Ethereum, you need at least 0.01-0.05 ETH (~$20-100) to cover gas. For Solana, a few dollars of SOL suffices given low fees.
• →Step 3 — Choose a marketplace: OpenSea is the largest and most beginner-friendly. Foundation is curated for digital artists. Manifold allows custom smart contract deployment for professional creators. For Solana, Magic Eden or Tensor are primary options.
• →Step 4 — Create your collection: Define a collection name, token symbol, description, and royalty percentage (typically 5-10%). The royalty rate is embedded in the contract and determines what you receive on secondary sales — though enforcement depends on marketplace compliance.
• →Step 5 — Upload and configure: Upload your artwork (IPFS storage is strongly recommended over centralized hosting for permanence). Recommended file specs: PNG/GIF/MP4, under 100MB. Set mint price, supply limit, and consider allowlist mechanics (pre-approved addresses for early access) to reward community members.
• →Gas optimization: Ethereum gas costs fluctuate significantly. Use tools like ETH Gas Station to time mints during low-activity periods (often weekends or off-hours). Gas fees for deploying a new contract range from $50-500 depending on network congestion.
• →Common mistakes: Minting on an unverified contract address (phishing), not verifying your collection contract on Etherscan before publicizing, setting royalties too high (deterring secondary sales), and not backing up wallet credentials before deploying a contract that will receive payments.

Legal Status of NFTs: Copyright, Securities, and Regulation

NFTs exist at the intersection of intellectual property law, securities law, and emerging digital asset regulation. Most buyers significantly overestimate the legal rights they acquire when purchasing an NFT.

Copyright does not transfer with an NFT by default. Under U.S. copyright law (and most international equivalents), the creator of a work retains copyright unless explicitly assigned in writing. Buying an NFT typically grants you a license to display the associated artwork for personal use — nothing more. You cannot reproduce it commercially, create derivative works, or prevent others from viewing the underlying file. The specific rights you receive depend entirely on the terms of service of the issuing project, which vary dramatically. Yuga Labs (BAYC) famously granted commercial rights to NFT holders; most projects do not.

SEC securities analysis: Under the Howey Test, an NFT may qualify as a security if buyers invest money in a common enterprise with expectation of profit from the efforts of others. Fractionalized NFTs — where ownership of a single NFT is divided into tradeable tokens — almost certainly meet this test and are likely securities subject to SEC registration requirements. The SEC has brought enforcement actions related to NFT offerings it deemed unregistered securities. Individual NFT collections have received Wells notices (formal notice of intent to enforce) from the SEC.

Tax treatment: NFT sales are taxable capital gains events under IRS guidance. Income from creating and selling NFTs is self-employment income. NFTs qualifying as "collectibles" under IRC §408(m) are subject to the 28% long-term capital gains rate rather than the standard 15-20% rate. The IRS issued guidance in 2023 that certain NFTs may qualify as collectibles. Royalty income from secondary sales is ordinary income. All these events must be reported regardless of whether a 1099 is issued.

• →OFAC sanctions: The U.S. Treasury's Office of Foreign Assets Control has sanctioned specific wallet addresses. Transacting with sanctioned wallets — including buying NFTs from them — can violate U.S. sanctions law regardless of whether you knew the counterparty was sanctioned. Marketplaces have increasingly implemented wallet screening to detect sanctioned addresses.
• →EU MiCA: The Markets in Crypto-Assets regulation classifies most NFTs as outside its scope (they are unique rather than fungible), but fractionalized NFTs and NFTs issued in large series with essentially fungible characteristics may fall within MiCA's asset-referenced token or e-money token categories. EU creators and platforms should seek specialized legal counsel.