#Compound

Compound is a decentralized lending protocol on Ethereum that lets users supply crypto assets to a shared liquidity pool to earn interest, or borrow assets by posting other crypto as collateral. When you supply an asset, you receive cTokens (in Compound v2) or a position in the base market (in Compound III) that represent your deposit plus accrued interest. Interest rates adjust automatically based on the utilization of each market: the more an asset is borrowed relative to what is supplied, the higher the rate paid to suppliers and charged to borrowers. There is no loan officer, application process, or fixed term — every action is executed by audited smart contracts, and positions can be opened or closed at any time, subject to maintaining a healthy collateral ratio.

To earn interest on Compound, a user connects a self-custodial Ethereum wallet to the official Compound interface or a supported aggregator, selects a market such as USDC, ETH, or DAI, and deposits the chosen asset. In return, the protocol mints cTokens (or credits the supplier's balance in Compound III), and interest begins accruing block by block at the current supply rate. The yield is variable and reflects real-time borrowing demand, so it can rise sharply during high-leverage periods and compress when demand falls. Suppliers can withdraw their principal plus accrued interest at any time, provided the protocol has sufficient liquidity. It is important to note that yields are not guaranteed, and depositors carry smart-contract risk, oracle risk, and potential bad-debt risk if liquidations fail to clear underwater positions in extreme volatility.

Compound is one of the most battle-tested DeFi protocols, with multiple independent audits, a long live track record, and a public governance process, but it is not risk-free. The main risks include smart-contract vulnerabilities, where a bug could allow funds to be drained; oracle risk, since collateral valuations rely on external price feeds that can be manipulated or delayed; liquidation risk for borrowers, where sharp price moves can wipe out collateral; and governance risk, where COMP holders can vote to change parameters in ways that affect existing positions. Past incidents, such as the 2021 COMP distribution bug that briefly over-rewarded users, are a reminder that even mature protocols can encounter issues. Users should evaluate their risk tolerance, avoid supplying more than they can afford to lose, and consider diversifying across protocols rather than concentrating funds in any single venue.

COMP is the native governance token of the Compound protocol, first distributed in June 2020 to suppliers and borrowers as a way to decentralize control of the platform. Holders of COMP can propose and vote on changes to the protocol, including which assets to list, what collateral factors and interest-rate curves to use, how to allocate protocol reserves, and whether to deploy new versions like Compound III to additional chains. Voting power is proportional to the amount of COMP held or delegated, and any address with sufficient delegated voting weight can submit a formal proposal that, if approved, is executed on-chain after a timelock. COMP also functions as a tradable asset listed on major centralized and decentralized exchanges, and its market price is often viewed by analysts as a proxy for sentiment around the DeFi lending sector as a whole.

Compound v2 is the original multi-asset money market in which any listed asset can be supplied, borrowed, and used as collateral simultaneously across a single pool, with users receiving cTokens that represent their share. Compound III, also called Comet, takes a more conservative architecture: each deployment has a single borrowable base asset (for example, USDC or ETH) and a curated set of collateral assets that can only back borrows in that base asset, never be borrowed themselves. This isolation reduces contagion risk if one collateral asset suffers a price shock or exploit, simplifies risk management, and allows the protocol to scale to additional EVM chains more safely. Suppliers in Compound III earn interest only on the base asset, while collateral providers do not earn yield on their collateral but benefit from tighter, more capital-efficient borrowing terms. Both versions remain live, and governance continues to decide which markets and chains receive new deployments.