DeFi & DEX (Uniswap) Mastery: Build Your Own DEX

Trace the DeFi evolution from Bitcoin and Ethereum to stablecoins and Uniswap, highlighting smart contracts, AMM, yield farming, liquidity, and decentralized exchanges.

Explore the four pillars of decentralized finance: permissionless and open access, transparency and immutability, censorship resistance, and financial interoperability and composability, and how they enable interoperable DeFi ecosystems.

Automated market makers price assets in DeFi using constant product formulas like x*y=k and liquidity pools funded by providers. Uniswap uses these mechanisms to enable token exchanges with transparent pricing and trading fees.

Explore how Uniswap transformed DeFi by using automated market makers, liquidity pools, and a permissionless, trustless design that democratizes finance, culminating in v2 innovations like ERC-20 pairs and flash swaps.

Explore how Uniswap evolves from v1 to v3, from an ETH-centric AMM to ERC-20 pools, TWAP oracles, flash swaps, and concentrated liquidity with multiple fee tiers.

Explore how decentralized exchanges enable peer-to-peer crypto trading without intermediaries, compare custody with centralized exchanges, and explore security, privacy, accessibility, and DeFi innovations like liquidity mining.

Uniswap v2 enables direct token-to-token swaps with ERC-20 pools, removing the need to route trades through ETH. This boosts cost efficiency, speed, liquidity, and price stability.

Explore price oracles and the time-weighted average price (twap) as a manipulation-resistant, time-weighted price feed for on-chain contracts, with uniswap v2’s cumulative price approach.

Discover how Uniswap v2 enables direct ERC-20 to ERC-20 pairs, reducing reliance on ETH and slippage, with TWAP price oracles and improved liquidity and price discovery.

Explore how Uniswap v2 enhances liquidity pooling with ERC-20 pairs, 0.3% trade fees added to pools, and pool tokens that represent provider shares, enabling democratization and passive income in DeFi.

Understand impermanent loss in DeFi liquidity pools like Uniswap, comparing holding assets to pool positions amid price fluctuations, and explore strategies to mitigate risk, fees, and rewards.

Explore concentrated liquidity in Uniswap v3. Learn how providers allocate funds to specific price ranges for higher capital efficiency, dynamic range management, and risk considerations.

Explore range orders on Uniswap v3, a limit-order style mechanism within a price range to provide liquidity and earn fees, with attention to risks and strategy.

Define the state variables for a new dex, including an allPairs array and nested mappings for pools, while detailing add liquidity, remove liquidity, and swap in QiteSwap and QitePool.

Implement a create liquidity pool function that validates token addresses, prevents identical pairs, instantiates a QitePool, and emits a pair created event for easy tracking.

define the state variables for a liquidity pool smart contract, including token1 and token2 addresses, reserves, the constant product x*y=k, and the QiteLiquidityToken. Note the solidity version 0.8.20 for Sepolia.

Define the constructor for the liquidity pool contract and initialize token1, token2, and the liquidity token; this ensures proper variables are set for each pool creation and avoids initialization errors.

Implement the add liquidity function in the liquidity pool smart contract. Mint liquidity tokens, transfer token1 and token2, and update reserves and the constant k.

Implement the remove liquidity function by burning liquidity, transferring token1 and token2 to the provider, updating reserves and the constant formula, and exposing an external burn function with role-based access.

Implement the swap tokens function in Remix, enforcing input checks, balance verifications, reserve updates, and the x*y=k constant product, with events and testing.

Deploy and test your QiteSwap DEX on the Ethereum Sepolia testnet by creating tokens, adding liquidity, and performing swaps to validate contracts before front-end integration.

Build the dex front end using React concepts like components, jsx, and the virtual dom, and manage data with props and state for reusable, interactive UI.

Set up the three main components—node.js and npm, a code editor (Visual Studio), and Git—to start a front-end Web3 environment and clone the template for building your own dex.

Discover and integrate two core libraries, Web3UI kit and Moralis, to speed front-end blockchain development, enabling a connect wallet button and seamless data handling with ethers.js.

Develop the front end by cloning a base web3 project, installing dependencies, and integrating a connect wallet button using web3 ui kit to connect Metamask or WalletConnect.

Implement the homepage of a DeFi dex using React and Tailwind, defining the main page, styling with predefined Tailwind classes, and adding swap and pool navigation via Next.js router.

Learn to implement create liquidity pools by integrating the contract ABI, wiring Moralis web3 interactions, and building a front-end modal to create new pools.

Build and wire add and remove liquidity functionality by interacting with liquidity pool contracts via ABI, handling approvals, and showing liquidity balances in a front end.

Implement swap functionalities enable token exchanges on your dex by selecting pools, choosing from and to tokens, entering amounts, calculating expected outputs, and executing swaps with approvals.

Explore how DeFi and DEXs democratize finance and empower users, trace Uniswap's evolution from V1 to V3, and learn to build a DEX with smart contracts and a web interface.