Uniswap Brings Continuous Clearing Auctions to Arbitrum One

• Uniswap Labs has launched Continuous Clearing Auctions on Arbitrum One for onchain token auctions, market price discovery, and auto v4 liquidity seeding.
• CCA is permissionless and free and uses max-price bids cleared each block to reduce sniping.

Uniswap Labs has deployed Continuous Clearing Auctions (CCA) on Arbitrum One, giving builders a new onchain way to launch tokens with open participation and transparent pricing. With the rollout, Arbitrum teams can run token auctions onchain, discover a clearing price through live bids, and then seed liquidity on Uniswap v4 at that same market price. Uniswap said CCA is permissionless and free to use, with guides available for teams that want to integrate it.

Continuous Clearing Auctions are now live on @arbitrum

With this deployment, Arbitrum builders can now:

→ Run onchain token auctions
→ Discover a credible market price
→ Automatically seed liquidity on v4

In a way that’s transparent and open to everyone pic.twitter.com/EgEQDMCxe2

— Uniswap Labs (@Uniswap) January 27, 2026

CCA is built to address common launch problems that crop up during early token distribution. The fixed price sales may result in rushes and mispricing, and the Dutch auctions may provide a reward to timing rather than valuation. One-shot auctions are prone to last-minute sniping, and even bonding curves can be manipulated in the thin liquidity case.

A lot of launches are also dependent on centralized market makers, which introduces a sense of trust and potentially moves value off-user. CCA replaces those approaches with an auction that clears continuously and spreads demand across time.

Arbitrum also promoted the deployment as a new option for fairer token launches on Arbitrum One. In a post on X, the network said CCA supports market-driven price discovery and automatic liquidity seeding while running on its platform and liquidity ecosystem. Community responses have lauded the launch as useful for both sides of the market, since builders get distribution and liquidity tooling, and users get an auditable process.

How Uniswap’s CCA Runs Auctions and Seeds Liquidity

A Continuous Clearing Auction starts when a project commits a portion of its token supply and sets parameters such as duration and a floor price. Participants then place bids using a budget and a maximum price they are willing to pay. Instead of selling everything at once, CCA releases tokens over time using a block-by-block schedule.

Each block clears at a single uniform price for that block. Bids whose maximum price is large are filled first, followed by those whose maximum price is lower, and bids fall out when the clearing price exceeds their maximum price. This keeps the auction aligned with what active participants are willing to pay at each point in time. Because orders are spread across many blocks, no single moment becomes the only chance to get filled, and last-minute timing strategies have less influence.

At the end of the auction, tokens are distributed, and a Uniswap v4 pool can be created automatically at the discovered clearing price. That feature is designed to put liquidity in place from day one, without relying on separate offchain arrangements. It also links market creation and early trading to the same price discovery process that cleared the auction.

The Arbitrum rollout also comes as the network continues to update its core stack. As earlier reported, Arbitrum released the ArbOS Dia upgrade for Arbitrum One and Arbitrum Nova, changing how the layer-two base fee adjusts during demand spikes and aiming for smoother fees and higher throughput. Meanwhile, Uniswap has also provided configuration guidelines for teams integrating CCA.

Amid this update, the Arbitrum (ARB) price has recovered, trading at $0.17, a 2% rise at press time. The Uniswap (UNI) price has risen by 4% to trade at $4.84.