Uniswap v4-core: Smart Contracts for Uniswap v4

2023/06/22

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Uniswap, the decentralized exchange protocol, has released the core smart contracts for its latest version, Uniswap v4. The announcement was made on the official Uniswap blog.

Uniswap v4 introduces several new features, including concentrated liquidity, multiple fee tiers, and a more flexible oracle system. The new version also includes improvements to the automated market maker (AMM) algorithm, which is used to determine the price of assets on the platform.

Developers can now access the core smart contracts for Uniswap v4 on the Uniswap/v4-core repository on GitHub. The repository includes the contracts for the Uniswap router, factory, and pair, as well as the interfaces for the oracle and fee calculator.

For developers looking to build on Uniswap, the release of the v4 core smart contracts provides a solid foundation to start from. The flexibility of the new version's oracle system allows for more customization and integration with other protocols.

Here's an example of how to create a new Uniswap v4 pair using the core smart contracts in Solidity:

import "@uniswap/v4-core/contracts/interfaces/IUniswapV4Factory.sol";
import "@uniswap/v4-core/contracts/interfaces/IUniswapV4Pair.sol";

contract MyContract {
  address public factoryAddress = 0x1F98431c8aD98523631AE4a59f267346ea31F984;
  IUniswapV4Factory public factory = IUniswapV4Factory(factoryAddress);

  function createPair(address tokenA, address tokenB) external {
    IUniswapV4Pair pair = factory.createPair(tokenA, tokenB);
    // do something with new pair
  }
}

Uniswap v4 is already gaining traction in the DeFi space, with several projects announcing their integration with the new version. As the DeFi landscape continues to evolve, Uniswap remains a key player in the decentralized exchange market.