What is Dai (DAI)?

Deep Dive

1. Purpose & Value Proposition

DAI was created to provide a stable, decentralized digital dollar. Unlike centralized stablecoins like USDC or USDT, which rely on a company holding traditional bank reserves, DAI's stability is engineered on-chain. This design aims to offer a censorship-resistant form of money that operates without a central authority, making it a cornerstone of decentralized finance (DeFi) for trading, lending, and saving.

2. Technology & How It Works

DAI is an ERC-20 token on the Ethereum blockchain. New DAI is generated when a user deposits approved collateral into a smart contract "Vault." To ensure stability, the value of the locked collateral must always be greater than the DAI borrowed—typically over 150%. This overcollateralization acts as a buffer against price swings in the backing assets. If the collateral's value falls too close to the loan value, the system automatically liquidates it to protect the DAI's dollar peg.

3. Governance & Evolution

The rules of the Maker Protocol are not static. A global community of governance token holders votes on crucial parameters, including which new assets to accept as collateral, stability fees (interest on loans), and risk policies. This decentralized governance model is a key differentiator. The protocol has evolved significantly since its 2017 launch, notably upgrading from single-collateral DAI (backed only by ETH) to Multi-Collateral DAI in November 2019, which supports a diverse basket of assets.

Conclusion

Fundamentally, DAI is a community-governed, algorithmically stabilized asset that brings the reliability of the US dollar to the decentralized web. How will its commitment to over-collateralization balance with the need for capital efficiency as the stablecoin landscape evolves?