The NFT boom of 2021 and its subsequent collapse constitute one of the cleanest case studies in the economics and psychology of attention bubbles that modernity has produced. It is clean not because it was simple — it was structurally complex — but because it was fast, well-documented, and ended decisively enough to allow retrospective analysis before the participants had fully rationalized their behavior. The archive is legible in a way that the dot-com bubble or the tulip mania are not, because every transaction is timestamped on-chain, every wallet address is traceable, and many of the participants documented their decisions in real time on social media. For anyone who wants to understand how collective attention gets monetized, amplified, and ultimately exhausted, the NFT cycle is essential reading.

Non-fungible tokens are, at their technical core, nothing more exotic than unique entries in a blockchain ledger with associated metadata pointing to digital files. The blockchain entry provides provenance and transfer history; it does not provide ownership of the underlying image in any legally enforceable copyright sense; it does not prevent unlimited copying of the associated file; and it does not guarantee that the metadata link will continue to resolve to the intended content. These technical limitations were widely known and widely ignored during the boom, because the boom was not primarily about the technology. It was about attention.

The mechanism was this: scarcity, even artificial scarcity, creates a market structure that concentrates attention. When Beeple sold "Everydays: The First 5000 Days" at Christie's for $69 million in March 2021, the event served simultaneously as news, as cultural event, and as price signal. The news cycle brought attention. Attention brought new buyers. New buyers brought higher prices. Higher prices brought more news. The feedback loop between media coverage, social proof, and price appreciation is not unique to NFTs — it is the operating mechanism of every speculative bubble — but the NFT version was unusually legible because it operated publicly, on Twitter and Discord and on-chain, rather than through the private conversations of institutional investors.

Several structural features amplified the bubble. Royalty mechanisms — the ability to encode creator royalties into smart contracts so that original creators earned a percentage of every secondary sale — created a class of financially motivated creators who had strong incentives to market their collections and maintain floor prices. Platform network effects concentrated activity on OpenSea, which at its peak processed billions in monthly volume. Celebrity endorsements (Paris Hilton, Snoop Dogg, Steph Curry) provided social proof that transcended the crypto community. The "10,000 item generative collection" format — pioneered by CryptoPunks and institutionalized by Bored Ape Yacht Club — created the pseudo-scarcity of a luxury brand combined with the community dynamics of a membership club.

The collapse was structurally symmetric with the rise. When attention moved — first to other crypto assets, then out of crypto generally as interest rates rose in 2022 — the demand side evaporated. NFTs had no yield, no cash flows, no utility beyond the social dynamics of belonging to a community of holders, and no buyer of last resort. Floor prices for most collections fell 90–99% from their peaks. Wash trading, which had inflated reported volumes during the boom, created the appearance of liquidity that vanished instantly under selling pressure. Royalty enforcement, which depended on platform cooperation rather than on-chain enforcement, was systematically undercut as competing platforms offered zero-royalty trading to attract volume.

What does the NFT cycle teach? First, that attention is a real economic input — while it lasts. The social capital of belonging to the BAYC community, the cultural cachet of owning a high-profile digital artwork, the status signaling available through profile pictures — these were genuine utilities for some holders, and they were priced accordingly. The error was not in recognizing attention as an economic input; it was in treating it as a durable store of value rather than a renewable resource that requires continuous production to sustain. Second, that digital scarcity is structurally different from physical scarcity. An original painting cannot be perfectly copied; a JPEG can be. The NFT mechanism creates scarcity of the token but not of the experience of the image, and for most buyers — whose interest was the cultural status of the image, not the blockchain entry — this distinction was fatal to value preservation. Third, that creator royalties, while equitable in concept, create perverse incentives when attached to speculative assets: they transform creators into price-support mechanisms and generate conflict of interest in market commentary.

Law 5 — Revise / Evolution / Transparent Archive — is the appropriate analytical frame because the NFT cycle is above all a test of whether markets revise their valuation models when reality contradicts their assumptions. The answer in the short run was no: the feedback loops that inflated the bubble were resistant to disconfirmation, because rising prices were self-confirming and falling prices were reframed as buying opportunities. In the medium run, the answer is more interesting: the post-bust period has produced genuine innovation in NFT use cases — event tickets, proof-of-participation credentials, on-chain reputation systems — that are structurally different from speculative profile pictures because they have functional utility independent of price. Whether this innovation is sufficient to rebuild the category on more durable foundations is a revision question that only the next cycle will answer.