What Is the Aave Protocol (Aave)?

By Hata Team

9/18/20245 min read

Introduction to Aave Protocol

Aave is a decentralized cryptocurrency platform that allows users to borrow and lend digital assets using smart contracts. These contracts automate and enforce rules related to fund allocation, collateral management, and fees, simplifying the lending and borrowing process.

The platform focuses on overcollateralized loans, where borrowers must deposit crypto assets exceeding the amount they wish to borrow. This approach protects lenders from losses due to defaults and enables the Aave protocol to liquidate collateral in the case of its value drops substantially.

A Brief History of Aave

Aave, originally known as ETHLend, was founded in 2017 by Stani Kulechov. The platform initially started as a peer-to-peer lending marketplace where users could post loan requests or offers. While ETHLend had a unique concept, the platform faced challenges related to liquidity and scaling. In 2020, the team rebranded the platform to Aave (which means “ghost” in Finnish), shifting to a liquidity pool model. This pivot allowed for more efficiency and greater flexibility in lending and borrowing operations. Since its rebranding, Aave has continued to evolve, incorporating new assets and features such as flash loans, which are instant, uncollateralized loans that are executed and repaid in a single transaction. These innovations have attracted a wide range of users and developers, contributing to Aave’s rise in the DeFi space.

How Does Aave Work?

At its core, Aave allows users to deposit assets into liquidity pools, which other users can then borrow from. Borrowers pay interest on these loans, and depositors earn a portion of that interest. What makes Aave particularly attractive is its non-custodial nature, meaning users maintain control over their funds without relying on third parties.

Aave utilizes smart contracts to automate the entire lending and borrowing process. These smart contracts ensure that transactions are executed securely and without the need for intermediaries, creating a trustless and efficient financial ecosystem.

Lending on Aave

Aave allows users to lend their crypto assets by depositing them into liquidity pools, where they earn interest from borrowers. Instead of directly matching lenders with individual borrowers, Aave pools the deposited assets and lends them out collectively. To begin lending, users simply connect their digital wallet to Aave and select an asset to deposit. The assets deposited will earn interest, paid in the same cryptocurrency.

Aave supports a range of cryptocurrencies, including Ether (ETH), Dai (DAI), Aave (AAVE), and USD Coin (USDC). When tokens are deposited, they become part of the liquidity pool, and the interest paid by borrowers is distributed among all depositors.

Since Aave operates as a decentralized protocol, all transactions occur on the blockchain, which means network (gas) fees apply to both deposits and withdrawals. Lenders have the flexibility to withdraw their funds and any earned interest at any time, ensuring easy access to their assets.

Borrowing on Aave

To borrow cryptocurrency on Aave, users must first deposit collateral onto the platform. The deposited collateral earns interest while it is held. After depositing, users can select from a list of supported cryptocurrencies to borrow. Aave dynamically calculates borrowing limits based on factors such as the value and volatility of the assets. Once borrowed, the cryptocurrency is transferred directly to the user's connected wallet. Users can deposit one type of cryptocurrency as collateral and borrow a different cryptocurrency. The amount that can be borrowed is limited to a certain percentage of the collateral’s value, known as the Loan to Value (LTV) ratio. For instance, if the LTV ratio is 75%, a user can borrow 0.75 ETH worth of cryptocurrency for every 1 ETH deposited as collateral.

Aave loans also have a liquidation threshold, which determines when the loan is subject to liquidation if the value of the collateral drops too much. For example, if the liquidation threshold is 80%, the loan will be liquidated when the debt reaches 80% of the collateral's value.

Flash Loans

Aave offers Flash Loans, allowing users to borrow and repay funds within the same blockchain block. These transactions incur a 0.09% fee, which is paid by the borrower. Flash loans are unique because they don’t require collateral, provided the borrowed amount is repaid within the same transaction (also known as One Block Borrows). They are primarily designed to exploit arbitrage opportunities in the cryptocurrency market.

Liquidation

If the value of collateral falls below a specified Loan to Value (LTV) ratio, Aave may trigger a liquidation process. During this process, a portion of the collateral is sold to repay part of the loan and restore compliance with the LTV ratio. The liquidation is executed by users known as "liquidators," who receive a bonus for their efforts. The size of the liquidation penalty, which acts as the bonus for liquidators, varies depending on the type of collateral asset.

The Aave Token (AAVE)

The AAVE token is the native cryptocurrency of the Aave platform and plays several key roles within the ecosystem. Initially launched as LEND, the token underwent a migration and rebranding to AAVE, which is now used for governance and staking.

1. Governance: Aave is a decentralized platform, meaning that its development and future direction are shaped by its community. AAVE holders can participate in governance proposals, which allow them to vote on changes to the protocol, such as the addition of new assets or updates to the system’s risk parameters.

2. Staking: Another important use case for AAVE tokens is staking. Token holders can stake their AAVE in the Safety Module, a mechanism designed to ensure the platform’s security. If a shortfall event occurs (e.g., insufficient funds to cover loans), the staked AAVE will be used to cover the deficit. In exchange, stakers earn rewards in the form of more AAVE tokens.

How to buy Aave (AAVE) on Hata
  1. Create an Account: Sign up on the Hata platform by providing your email address and setting up a secure password. Verify your email to activate your account.

  2. Verify Your Identity: Complete the KYC (Know Your Customer) process by submitting the necessary identification documents as required by Hata for security purposes.

  3. Deposit Funds: Add funds to your Hata account.

  4. Navigate to Aave: Once your account is funded, go to the cryptocurrency marketplace on Market Instant Buy and search for Aave.

  5. Place an Order: Decide on the amount of Aave you wish to purchase.

  6. Secure Your Aave: After purchasing, ensure your Aave is stored securely. You can keep it in your Hata wallet.

  7. Monitor Your Investment: Keep track of your Aave investment through the Hata platform. Stay updated on market trends and news to make informed decisions.

Conclusion

In summary, Aave is a leading cryptocurrency lending platform within the decentralized finance (DeFi) space, utilizing smart contracts to automate its operations. Offering both overcollateralized loans and Flash Loans, Aave creates a flexible lending environment.

Users can borrow supported cryptocurrencies by depositing collateral, with loans processed instantly through smart contracts that accrue interest until repayment. Aave’s security is built on Ethereum’s decentralized network and staked Aave tokens. However, users should be aware that borrowing, Flash Loans, and network transactions incur fees. Overall, Aave provides a secure and efficient way to engage in cryptocurrency lending and borrowing within the DeFi ecosystem.

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The information provided here is presented "as is'' and is intended for general informational and educational purposes only. It does not come with any representation or warranty of any kind. This content should not be interpreted as financial, legal, or other professional advice, and it is not intended to endorse or recommend the purchase of any specific product or service. It is advisable to consult with appropriate professional advisors for personalised guidance. In cases where the article is contributed by a third-party author, please note that the expressed views belong to the author alone and may not necessarily reflect the opinions of Hata. For further details, we encourage you to read our complete disclaimer. Please be aware that the prices of digital assets can be highly volatile. The value of your investment may increase or decrease, and there is a risk that you may not recover the full amount invested. You are solely responsible for making your own investment decisions, and Hata cannot be held liable for any losses you may incur. This material is not to be construed as financial, legal, or other professional advice. For more information, please refer to Hata’s Terms of Use and Risk Warning.