Written by: 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. After the initial surge in interest, the price of Unipeg briefly surpassed $1000 over the weekend, before falling back to $560 at the time of writing. What exactly is Unipeg, and why has it attracted the attention of both the NFT and Uniswap communities in such a short time?

When people first see Unipeg (Upeg), their reactions are similar: What exactly is this? An NFT? A token? Or just another on-chain collectible project in a different package?

Don't rush to categorize it. The most interesting thing about Unipeg is that it sits between several familiar concepts. It generates unicorns, which look similar to collectible NFT avatars; it also differs from ordinary fungible tokens because its images don't exist independently, but are triggered by the transaction process itself. To put it more bluntly, Unipeg attempts to turn a swap into a generational act, transforming a state change in a liquidity pool into the birth condition of an on-chain object.

The key behind this is not the word "unicorn," but the hooks of Uniswap v4.

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. Previously, many protocol innovations required building an additional contract around the AMM or performing additional processing after the transaction was completed. Hooks open this door directly within the swap process. The program doesn't need to be outside the exchange to read the results; it can participate the instant the transaction occurs.

Unipeg is an experiment conducted along this narrow line of inquiry. According to the project's official website and public materials, uPEG uses a custom v4 hook: when someone exchanges in the pool, the hook generates a hash value encoding information such as the layer, color, and original holder; subsequently, the on-chain SVG renderer reads this input and assembles it into a 24x24 unicorn image. The entire process does not rely on external storage or use IPFS; the image itself is represented on the blockchain. The maximum number of Unipeg tokens is 10,000.

To put this mechanism in plain language, you could understand it like this: Traditional NFTs are more like hanging the artwork on the wall first and then waiting for people to buy it; Unipeg is more like every time someone walks through the room and pushes the door, a new painting will appear on the wall on the spot. What it looks like is not determined by a batch of files uploaded in advance by the art team, but by the marketing campaign itself.

This is also the most noteworthy layer of Unipeg. It aims to demonstrate that on-chain objects can be dynamically generated, bound to liquidity pools, and continuously refreshed and defined during transactions. Objects are not just inventory in a wallet, but can also be slices of market processes.

Many people reading this might immediately think of ERC-404. The two do indeed share some superficial similarities: both attempt to bridge the gap between "divisible tokens" and "unique, displayable objects." However, Unipeg and ERC-404 are not on the same path.

The core idea of ERC-404 is to combine ERC-20 and ERC-721 to create an experimental hybrid asset. The Pandora team describes it on their GitHub as a mixed ERC-20/ERC-721 implementation, aiming to achieve both liquidity and fragmentation. The common understanding is that when a user holds a complete integer unit, it corresponds to an NFT; when the token is split into fractions or fragmented during a transfer, the NFT may be destroyed; and when it is reassembled into a complete unit, it will be regenerated. This mechanism handles how the same asset switches between fungible and non-fungible states.

Unipeg's focus isn't on "switching standards," but on "making transactions themselves generate objects." It doesn't attempt to reinvent a hybrid ERC standard, nor does it force a pair between an ERC-20 token and an ERC-721 token. More accurately, Unipeg uses Uniswap v4 hooks to transform the swapping behavior within the pool into a generator. The objects originate from custom logic within the swap lifecycle, and the visual results are tied to the transaction trigger conditions, rather than mapping an asset back and forth between two shells: ERC-20 and ERC-721.

Further down the line, Unipeg has an even more ingenious design, combining "digital balance" and "displayable objects" together. The project team disclosed that each image is bound to a specific integer, such as a uPeg ordinal number like 1, 2, or 3. In other words, users don't buy pre-numbered collectibles, but rather acquire objects corresponding to those integers as their holdings cross integer thresholds. You can think of it as a dividing line: the fractional part remains ordinary tokens, while the integer part begins to take shape .

This design is ingenious because it connects the familiar token and collectible experiences. Buying and selling tokens is essentially just adding and subtracting numbers; but in Unipeg, a specific integer segment of a number suddenly gains an image, an identity, and display value. Thus, exchange is no longer just a price-based transaction but also a narrative activity. Users are not simply accumulating balances, but also building a set of on-chain unicorns that can be seen, ranked, and transferred.

Even the name Unipeg has a double meaning. Hayden Adams recalled in his 2019 "Uniswap Birthday Blog — V0" that he initially wanted to call Uniswap "Unipeg," a hybrid of Unicorn and Pegasus. However, Vitalik Buterin responded, "Unipeg? That sounds more like Uniswap." The latter became the final name. Looking back today, this abandoned name has found a new place in the v4 hooks era. The project team goes a step further: in the NFT era, collectibles were often jokingly referred to as JPEGs, and since the objects here were created on Uniswap, Uni + JPEG = uPEG . A name that wasn't used in 2018 has come full circle and become a more fitting project name in 2026.

Of course, the buzz surrounding Unipeg isn't just due to a new set of images, but also because it sits at the intersection of two established tracks: NFTs and on-chain collectibles on one side, and the programmable trading space opened up by Uniswap v4 hooks on the other. The market has already made Unipeg a case study worth observing.

However, there's a boundary that needs clarification: this focus leans more towards industry observation and discussion, and doesn't equate to official endorsement from OpenSea or Uniswap. The truly important point is that while v4 hooks have indeed expanded the design space significantly, once trading, collecting, and asset representation are intertwined, new possibilities and complexities will simultaneously emerge. Whether a project can move from initial novelty to long-term viability ultimately depends on the self-consistency of its mechanisms, why users are willing to stay, and what sustainable value these on-chain objects can ultimately generate.

For Uniswap, Unipeg's significance goes beyond just adding another interesting project. It's more like a public demonstration, showing the market that v4 hooks aren't just peripheral features for developers, but fundamental capabilities that can rewrite Uniswap's boundaries, extending trading to 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, trends and narratives can change rapidly for both users and observers, and we still need to remain rational in our perspective .

Uniswap已支持通过任意ERC-20代币购买NFT

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