Dai (token symbol: DAI) is a decentralized stablecoin running on the Ethereum blockchain, with the core objective of maintaining a 1:1 value peg to the US dollar. Issued and managed by the decentralized autonomous organization MakerDAO (now rebranded as Sky), it is one of the most representative stablecoins in the DeFi (decentralized finance) ecosystem.
How Does DAI Work?
DAI's operating mechanism is fundamentally different from stablecoins like USDT and USDC, which are backed by fiat reserves held by centralized institutions. The value backing of DAI comes from crypto asset collateral deposited by users into smart contracts (known as "Vaults").
- Over-collateralized Minting: To generate DAI, users must first deposit crypto assets (such as ETH, wBTC, or USDC) with a value higher than the desired amount of DAI into a smart contract. For example, depositing $150 worth of ETH as collateral might only allow the generation of $100 worth of DAI. This over-collateralization mechanism is designed to mitigate the risks posed by collateral price volatility.
- Peg Maintenance Mechanisms: DAI maintains its US dollar peg through a variety of mechanisms:
- Liquidation: If the value of the collateral drops below a preset liquidation threshold, the system automatically sells a portion of the collateral to repay the DAI debt, thereby protecting the system's solvency.
- Stability Fee: Users are required to pay an annualized fee on the DAI they generate, which influences the supply cost of DAI.
- Peg Stability Module (PSM): Allows users to directly swap other stablecoins (such as USDC) for DAI at a 1:1 ratio, providing direct arbitrage support for the DAI price.
- Earning Interest: DAI holders can deposit their DAI into the "Dai Savings Rate (DSR)" contract to earn interest determined by community governance.
DAI Development and Current Status
DAI was originally launched in 2017 as Single-Collateral Dai (SAI, accepting only ETH as collateral), and was later upgraded to Multi-Collateral Dai (MCD) in November 2019, accepting a wider variety of assets as collateral.
In August 2024, MakerDAO underwent a rebranding to Sky, introducing the new stablecoin USDS and governance token SKY. According to official information, the original DAI and MKR tokens have not been deprecated; holders can choose to convert them to the new tokens at a fixed ratio or continue holding and using DAI. Consequently, DAI remains widely in circulation and use today.
Value and Use Cases of DAI
Due to its decentralized, transparent, and censorship-resistant characteristics, DAI is regarded by the DeFi community as critical infrastructure. Its primary use cases include:
- DeFi Lending and Trading: Serving as a foundational trading pair and collateral asset across numerous lending protocols (such as Aave, Compound) and decentralized exchanges (DEXs).
- Value Storage and Payments: Acting as a safe-haven asset during cryptocurrency market volatility, and being utilized for cross-border payments or salary settlements.
- Yield Generation: Generating passive income via the DSR or by providing liquidity.
Real-time data such as DAI's price, market capitalization, and trading volume can be tracked on market platforms like Svmuu. As a stablecoin, its core value lies in utility functions such as payments and settlements, rather than price speculation.
How to Acquire and Trade DAI?
As a mainstream stablecoin, DAI is listed on numerous centralized exchanges (CEXs) and decentralized exchanges (DEXs) globally. Users can buy and sell it on supported trading platforms. Because it is issued on Ethereum, it can also be swapped on DEXs like Uniswap and Curve using Web3 wallets such as MetaMask.
