# Continuous Clearing Auctions: Bootstrapping Liquidity on Uniswap v4

Source: https://blog.uniswap.org/continuous-clearing-auctions
Kiwi News: https://news.kiwistand.com/stories/Continuous-Clearing-Auctions-Bootstrapping-Liquidity-on-Uniswap-v4?index=0x6930c7e3a1613677b4e1f0f8854f008d2c5506a935974fd238ab907ce510a319fb7acc74
Submitted by tim on 2025-12-03 UTC, 1 upvote, 1 comment

## Summary

Uniswap has announced Continuous Clearing Auctions (CCA), a permissionless protocol that helps teams bootstrap liquidity on Uniswap v4 and find the market price for new and low-liquidity tokens. Built in collaboration with Aztec, the first project to launch with CCA, the protocol includes an optional ZK Passport module for private, verifiable participation. Each block's supply is sold at a single market-clearing price, the highest price at which that block's tokens can all be sold, and when the auction ends, proceeds automatically create a Uniswap v4 pool at the discovered price. The Continuous Clearing Auction contract is now live for anyone to use.

## Article

November 13, 2025

#Protocols

Today we’re excited to announce Continuous Clearing Auctions (CCA), a permissionless protocol that helps teams bootstrap liquidity on Uniswap v4 and find the market price for new and low-liquidity tokens.

This is the first of several tools we’re building to help projects launch and deepen liquidity on the Uniswap protocol.

Built in collaboration with Aztec, the first project to launch with CCA, the protocol also includes an optional ZK Passport module that enables private, verifiable participation.

What CCA solves

Liquidity formation often happens behind closed doors. That creates information gaps, privileges a few players, and can leave markets thin and unstable. We think there is a better way. CCA was designed around three core principles:

Onchain-native market creation. The entire auction runs onchain, with pricing, bidding, and settlement happening transparently. No gatekeepers or offchain deals.

Fair, gradual price discovery. Supply is distributed over time through a continuous clearing process. This incentivizes bidding early, reduces sniping, limits volatility, and helps the market converge toward a fair value.

Automatic liquidity seeding on Uniswap v4. When the auction ends, proceeds automatically create a Uniswap v4 pool at the discovered price, deepening liquidity.

How it works

Setting up the auction

Projects start off by defining how many tokens to sell, a starting price, and how long the auction will run. They can also customize with options like running in tranches, adding verification tools such as ZK Passport, or building entirely new modules on top of the platform.

Placing bids

Users then submit bids, specifying a maximum price and a total spend. Bids are non-withdrawable while in range (can be withdrawn if they’re out of range) but users can place as many as they like while the auction is live. Each bid is automatically spread across the remaining blocks of the auction, using the same max price for every split. A bid only fills if the block’s clearing price is at or below the bidder’s limit.

Finding a price

At the end of each block, the protocol sets a single market-clearing price – the highest price where all tokens for that block can be sold. Higher bids fill first, then bids at the clearing price, pro rata if needed. Everyone who fills in that block pays the same price.

As more bids come in and supply per block stays pre-set, clearing prices stay the same or trend upward. Early bidders tend to get a better average price since a larger portion of their bid can fill in earlier, cheaper blocks.

What’s next

The Continuous Clearing Auction contract is live, and available for anyone who wants to use it. In the coming months, we’ll release additional modules to improve the experience for projects and communities launching with CCA.

Read the documentation and reach out to our team if you’re interested in learning more about Continuous Clearing Auctions.

## Comments

**tim**: Used in the Aztec token sale: https://aztec.network/auction-terms-conditions