Introduction
Compound is a decentralized finance protocol that allows users to supply crypto assets or borrow a supported asset against collateral through blockchain-based smart contracts. It matters because it provides an on-chain alternative to lending arrangements managed through a central financial intermediary.
This article concerns the Compound DeFi protocol and its COMP governance token. It should not be confused with unrelated businesses and products that also use the Compound name, including the separate Compound AI platform for finance professionals.
Compound at a Glance
Compound operates as a non-custodial protocol. Instead of a central institution holding funds and negotiating each loan, users interact with smart contracts that apply the rules of a particular market. Non-custodial does not mean risk-free: assets supplied to the protocol remain subject to its contract logic and market conditions.
Suppliers provide assets to a market. Borrowers deposit supported collateral and borrow according to the market’s collateral requirements. A base asset is the principal asset supplied and borrowed in a Compound III market, while collateral assets support a borrower’s position.
COMP is the protocol’s governance token. It is distinct from the assets supplied, borrowed, or posted as collateral. COMP holders or participants with delegated voting power can take part in governance concerning protocol changes.
History and Development of Compound
Compound emerged in 2018 as an early DeFi lending protocol. Its on-chain markets enabled users to supply crypto assets that other users could borrow against collateral.
Compound V2 used separate asset markets and a cToken structure. When a user supplied an asset, the associated cToken represented the user’s position and the accumulation of interest within that market.
COMP governance was introduced in 2020, strengthening a system in which token-based governance could address proposed protocol changes.
The later Compound III design changed the market structure. Rather than treating multiple supplied assets in the same way as V2, each Compound III market is organized around one base asset, with other supported assets serving as collateral.
How Compound Works
Supplying and borrowing
Compound pools assets supplied by users so that liquidity is available to borrowers. In Compound III, a user can supply a market’s base asset to earn variable interest. A borrower can instead deposit supported collateral and borrow that market’s base asset, subject to the applicable collateral parameters.
Users interact with smart contracts to supply, borrow, repay, and withdraw. Individual suppliers and borrowers do not directly negotiate loan terms with one another, and the protocol does not depend on matching each borrower to a specific lender.
Variable interest rates
Supply and borrowing rates can change as market utilization changes. Utilization describes how much of a market’s available liquidity is being borrowed. The applicable model and parameters may differ by market and may also be changed through governance, so a displayed annual rate should not be treated as permanent or guaranteed.
Collateral and liquidation
Collateral parameters determine how much a user may borrow against supported assets. The protocol uses price data to assess collateral value and the condition of a borrowing position.
If collateral value falls too far, or if the debt grows enough that the position no longer meets the required conditions, liquidation can occur. Liquidation is the process of resolving some or all of an undercollateralized position and can cause a loss for the borrower.
Compound V2 and Compound III
Compound V2 centers on separate asset markets and cTokens that represent supplied positions. Compound III uses a different architecture in which each market has one base asset for supplying and borrowing, while other approved assets can be posted as collateral.
This distinction is important because collateral supplied to a Compound III market does not necessarily serve the same interest-earning role as the base asset. Users must identify the protocol version, market, and role of each asset before interacting with it.
Key Features of Compound
- Non-custodial operation: Users interact with smart contracts rather than placing assets under the direct management of a conventional lender.
- Pooled liquidity: Supplied base assets support borrowing within a market instead of being assigned to individual bilateral loans.
- Variable rates: Supply and borrowing rates can change with utilization and the market’s interest-rate model.
- Collateralized borrowing: Borrowers must provide supported collateral and remain within the market’s risk requirements.
- Single-base-asset markets: Each Compound III market is organized around one base asset and a defined set of supported collateral assets.
- Verifiable contracts: Compound III is EVM-compatible, and its contract code and balances are publicly verifiable on-chain.
- COMP governance: COMP supports participation in protocol governance and is not generally required as the asset used to pay borrowing interest.
Advantages, Limitations, and Risks
Compound’s smart-contract structure makes protocol rules, contract code, and balances publicly verifiable. Its pooled markets also let users interact with available on-chain liquidity without negotiating directly with an individual lender or borrower.
These characteristics do not guarantee access, yield, liquidity, or safety. The outcome of an interaction depends on market conditions, collateral values, contract behavior, the underlying blockchain, and the user’s own security practices.
- Liquidation risk: A borrowing position can be liquidated when it no longer satisfies collateral requirements.
- Interest-rate risk: Supply and borrowing rates are variable and can move as market utilization changes.
- Smart-contract risk: Vulnerabilities or unexpected contract behavior may lead to losses.
- Oracle risk: Faulty or disrupted price data can affect collateral valuation and liquidation decisions.
- Liquidity risk: Limited available liquidity may make a desired withdrawal or borrowing transaction difficult.
- Collateral risk: Falling collateral prices or problems affecting a collateral asset can weaken a borrower’s position.
- Governance risk: Governance decisions can change supported markets, parameters, or other aspects of the protocol.
- Network risk: Blockchain congestion or disruption can delay transactions or make them more expensive.
- Transaction-fee risk: Supplying, borrowing, repaying, withdrawing, and managing collateral may require network fees.
- Wallet security risk: A protocol’s security does not protect users who expose private keys, recovery phrases, or wallet permissions.
Practical Context for Compound Users
Users may encounter Compound when seeking to supply a market’s base asset, borrow that asset against supported collateral, or participate in governance with COMP. These activities have different purposes and risks, so they should not be treated as interchangeable.
Before interacting with Compound, a user should confirm that the application is authentic and identify the selected blockchain network, protocol version, and market. The user should also distinguish between the base asset and collateral assets rather than assuming that every deposited asset performs the same function.
Current supply rates, borrowing rates, available liquidity, collateral condition, liquidation exposure, and network fees should be checked at the time of an intended transaction. These conditions can change and should not be inferred from older screenshots or descriptions.
Wallet permissions should be reviewed carefully, and private keys or recovery phrases should never be disclosed to a website or another person. Users should also understand each transaction before approving it in a wallet.
Frequently Asked Questions
Is Compound a centralized lending service?
No. Compound is a DeFi protocol in which smart contracts and on-chain markets manage supplying and collateralized borrowing rather than a central lender negotiating each loan.
Is COMP required to borrow from Compound?
COMP is not generally required to pay borrowing interest. Its principal role is protocol governance, while borrowing uses the base asset and supported collateral defined by the relevant market.
What is Compound III?
Compound III is a version of the protocol in which each market is built around one base asset. Users can supply that base asset, while borrowers can post supported collateral to borrow it.
What are cTokens?
cTokens are associated with Compound V2. They represent supplied positions and the accumulation of interest in V2 markets. Compound III uses a different market and accounting structure.
Are supplier returns guaranteed?
No. Supply rates can change, and users face smart-contract, liquidity, asset, network, and other risks. A displayed rate does not guarantee future returns or protect against loss.
Does a Compound loan have a conventional fixed term?
Compound borrowing does not generally rely on the same fixed-maturity arrangement as a conventional term loan. Interest continues to accrue while debt remains, and a position can be liquidated if it fails to meet collateral requirements.
References
- Compound III Documentation — https://docs.compound.finance/
- 컴파운드(Compound, COMP) 완벽 가이드 — https://cryptowiki-db.com/compound-wiki/
Key Takeaway
Compound is a smart-contract-based DeFi protocol for supplying assets and borrowing against collateral. Compound III organizes each market around one base asset and a defined set of supported collateral assets, while COMP serves a governance role rather than acting as a generally required interest-payment token. Users need to understand variable rates, liquidation exposure, smart-contract and oracle risks, liquidity conditions, network costs, and wallet security before interacting with the protocol.
Disclaimer
This article is for general educational and informational purposes only and does not constitute investment, financial, legal, or tax advice. Crypto assets and DeFi protocols involve risks, including loss, liquidation, changing rates, technical failures, insufficient liquidity, network disruption, governance changes, and wallet compromise. Readers should verify current information through official materials and seek advice from appropriately qualified professionals where necessary.
Any AI-generated images included with this article are educational visual aids. They should not be interpreted as official project interfaces, products, technical diagrams, or exact representations of real-world systems. Separately supplied and verified project icons or identity assets are distinct from AI-generated educational images.