Original author: KarenZ, Foresight News
Last weekend, Unipeg was thrust into the spotlight. OpenSea CMO Adam Hollander and Uniswap team member niko both mentioned Unipeg on Twitter. As sentiment quickly surged, Unipeg’s price briefly surpassed $1,000 over the weekend and has since retreated to $560 as of writing. What exactly is Unipeg, and why did it attract simultaneous attention from both the NFT and Uniswap communities in such a short time?
Many people’s first reaction to Unipeg (Upeg) is much the same: What exactly is this—an NFT, a token, or just another on-chain collectible project repackaged?
Don’t rush to categorize it. What’s most interesting about Unipeg is precisely how it sits between several familiar concepts. It generates unicorns that visually resemble avatar-style collectible NFTs, yet it differs from standard fungible tokens because its images aren’t standalone—they’re triggered by the transaction process itself. Put more simply, Unipeg aims to turn a swap into an act of generation, transforming a state change in a liquidity pool directly into the birth condition of an on-chain object.
The key here isn't the word "unicorn," but rather Uniswap v4's hooks.
Uniswap V4 allows developers to insert custom logic before and after key pool actions, such as initialization, adding or removing liquidity, executing swaps, and receiving donations. In the past, many protocol innovations required building an additional layer of contracts around the AMM or performing post-trade processing. Hooks open this door directly within the swap process itself—programs no longer need to observe results from outside; they can participate at the very moment the trade occurs.
Unipeg was created as an experiment along this gap. According to the project team’s official website and public materials, uPEG uses a custom v4 hook: when someone swaps in the pool, the hook generates a hash encoding information such as layer, color, and original holder; subsequently, an on-chain SVG renderer reads this input and assembles it into a 24×24 unicorn image. The entire process relies on no external storage or IPFS—the image is fully expressed on-chain. The supply of Unipeg is capped at 10,000.
In plain terms, this mechanism can be understood as follows: Traditional NFTs are like hanging a piece of art on the wall first and then waiting for someone to buy it; Unipeg is more like a new painting spontaneously growing on the wall every time someone passes by the room and pushes the door. What determines what the painting looks like isn’t a pre-uploaded set of files by an art team, but rather the market activity itself.
This is also the most compelling aspect of Unipeg. It aims to demonstrate that on-chain objects can be dynamically generated, tied to liquidity pools, and continuously refreshed and defined through trading activity. Objects are not just inventory in wallets—they can also be slices of market processes.
Many people reading this might immediately think of ERC-404. While they do share a superficial similarity—both aim to bridge the gap between divisible tokens and unique, displayable objects—Unipeg and ERC-404 are pursuing fundamentally different paths.
The core idea of ERC-404 is to combine ERC-20 and ERC-721 into an experimental hybrid asset. The Pandora team describes it on GitHub as a mixed ERC-20/ERC-721 implementation, designed to simultaneously enable liquidity and fragmentation. Commonly understood, when users hold whole integer units, they correspond to NFTs; when tokens are split into decimals or dispersed during transfers, the NFTs may be destroyed; and when whole units are reassembled, new NFTs are regenerated. This mechanism addresses how a single asset can transition between fungible and non-fungible states.
Unipeg’s focus is not on “switching standards,” but on “making the trade itself produce an object.” It does not attempt to reinvent a hybrid ERC standard, nor does it forcibly bind an ERC-20 token to an ERC-721 token. More accurately: Unipeg leverages Uniswap v4 hooks to turn swap actions within a pool into generators. The origin of the object lies in custom logic within the swap lifecycle, with visual outcomes tied to trade-triggering conditions—rather than constantly mapping a single asset back and forth between ERC-20 and ERC-721 containers.
Looking further, Unipeg has an even more clever design that merges "digital balance" with "displayable objects." The project team reveals that each image is tied to a specific integer, such as 1, 2, 3, and so on—uPeg ordinals. This means users aren’t purchasing pre-numbered collectibles; instead, they receive the object corresponding to an integer when their balance crosses that whole number threshold. You can think of it as a dividing line: the fractional part remains a regular token, while the integer part begins to take shape.
This design is clever because it connects the familiar token experience with the collectible experience. Buying and selling tokens was originally just about numbers increasing or decreasing; but within Unipeg, a specific integer slice of those numbers suddenly gains imagery, identity, and display value. As a result, trading becomes not just a price-driven action, but also a narrative one. Users aren’t merely accumulating balances—they’re collecting a set of on-chain unicorns that will be seen, ranked, and transferred.
Unipeg carries a double meaning in its very name. In Hayden Adams’ 2019 “Uniswap Birthday Blog — V0,” he recalled that he originally intended to name Uniswap “Unipeg,” a blend of “Unicorn” and “Pegasus.” Later, Vitalik heard it and replied, “Unipeg? It sounds more like Uniswap.” And so, Uniswap became the final name. Looking back today, this abandoned old name has found new relevance in the v4 hooks era. The project’s explanation goes further: in the NFT era, collectors often jokingly refer to their assets as “JPEGs,” and since these assets are born directly on Uniswap, Uni + JPEG = uPEG. A name unused in 2018 has come full circle—and in 2026, become a far more fitting project name.
Of course, Unipeg's discussion isn't just due to a new set of visuals, but because it sits at the intersection of two established sectors: NFTs and on-chain collectibles, and the programmable trading space unlocked by Uniswap v4 hooks. The market has already positioned Unipeg as a noteworthy case to watch.
But there’s an important boundary to clarify: this focus is closer to industry observation and discussion, not an official endorsement by OpenSea or Uniswap. The key takeaway is that v4 hooks have significantly expanded the design space—but when trading, collecting, and asset representation become tightly integrated, new possibilities and new complexities emerge simultaneously. Whether a project can move beyond initial novelty to long-term sustainability ultimately depends on whether its mechanics are coherent, why users choose to stay, and what lasting value these on-chain objects can generate.
For Uniswap, Unipeg is more than just another interesting project—it’s a public demonstration showing that v4 hooks are not merely peripheral features for developers, but foundational capabilities capable of redefining Uniswap’s boundaries, extending trading behavior into realms like collectibles, social interaction, and identity expression. In other words, every new object emerging from the hooks ecosystem has the potential to ultimately enhance Uniswap’s appeal as a foundational infrastructure.
Of course, for users and observers, popularity and narratives can change rapidly—we must still maintain a rational perspective.