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  • 🧭Navigation
  • 🦙Alpaca Finance
  • Our Protocol
    • 🏆Our Products
    • 📈How to Participate
      • Introduction to Six Simple Strategies to Earn
      • Strategy 1: Hold a Token While Earning High Yields at Low Risk; aka Lend & Stake
      • Strategy 2: Hold a Token Pair to Earn Auto-Compounded Yields Without Leverage
      • Strategy 3: Supercharge Your Stablecoin Yields
      • Strategy 4: Multiply Crypto Gains in a Bull Market
      • Strategy 5: Yield Farm Profitably in a Bear Market
      • Strategy 6: Multiply Crypto Gains in Any Market by Hedging
    • 🗺️Roadmap
    • 🔒Security
    • 📃Transparency (Audits & Contracts)
    • 🔗Links
    • 📰Media Coverage
    • ❤️Charity
    • 🌐Global Protocol Parameters
      • ⏫Leveraged Yield Farming Parameters
      • 📈AF1.0 Interest Rate Model
      • 📖Automated Vault Parameters
      • 📗Perpetual Futures Exchange Parameters
      • 📙AF2.0 Parameters
  • Tokenomics
    • 📀ALPACA Token
    • 💰ibTokens
    • ⚖️Pool Allocations
    • 🔥Proof of Burn
      • Burn Sources Details
  • Lending
    • 🏦Introduction to Lending
    • ❗Risks
    • ⏭️Step-by-Step Guide
      • Lend & Stake
      • Withdraw
  • Leveraged Yield Farming
    • 🚀Introduction to Leveraged Yield Farming
    • 🏊Pool-Specific Parameters
      • PancakeSwap Pools
      • Mdex Pools
      • Biswap Pools
      • SpookySwap Pools (Deprecated)
      • WaultSwap Pools (Deprecated)
    • 🧮Leveraged Yield Farming Mechanics
      • PancakeSwap Farms
      • Mdex Farms
      • Biswap Farms
      • SpookySwap Farms (Deprecated)
      • WaultSwap Farms (Deprecated)
    • 🌊AF1.0 Liquidation
    • ❗Risks
    • ⏭️Step-by-Step Guide
      • Open a Leveraged Yield Farming Position
      • Adjust a Leveraged Yield Farming Position
      • Close/Partially Close a Leveraged Yield Farming Position
      • Claim Rewards
      • Liquidate Positions
  • Automated Vaults
    • ⚙️Introduction to Automated Vaults
      • Market-Neutral Strategy
      • Savings Vault Strategy
    • 🧮Hedging Mechanics
    • ⏬Lowering Vault Leverage Mechanics
    • 🔏Private Automated Vault
    • 📈Backtest Results
    • ❗Risks
    • ⏭️Step-by-Step Guide
      • Invest in an Automated Vault
      • View Your Automated Vault Position
      • Withdraw from the Automated Vault
  • Perpetual Futures Exchange
    • 🔮Introduction to Perpetual Futures Exchange
      • Traders
      • Liquidity Providers
    • 🚀Launch Plan
    • 💲Trading Fee Discount Program
    • 🎁Referral Program
    • ❗Risks
    • ⏭️Step-by-Step Guide
      • Open a Leveraged Position
      • Manage a Leveraged Position
      • Close a Leveraged Position
      • Swap Asset
      • Invest in & Stake ALP token
      • Unstake & Withdraw ALP token
  • Alpaca Finance 2.0
    • 💎Introduction to Alpaca Finance 2.0
      • Money Market
      • Leveraged Yield Farming
    • 🚀Launch Plan
    • ⭐Incentive Rewards
    • 🌊AF2.0 Liquidation
    • ❗Risks
    • ⏭️Step-by-Step Guide
      • Deposit
      • Borrow
      • Repay
      • Withdraw
      • Transfer between Accounts
      • Looping Strategies
  • Governance
    • 🗳️Governance Vault
    • 🍃Grazing Range (New)
    • ⚡Early Withdrawal
    • 🔎Governance Sources Details
    • 📝Governance Discussion and Voting
    • 🗒️AIP Details
      • AIP-1: Handling of ITAM Rewards
      • AIP-2: Governance Vault on Fantom
      • AIP-3: Handling of Governance Vault’s Early Withdrawal Penalty
      • AIP-4.1: Handling of a recent bad debt on WaultSwap’s position
      • AIP-4.2: Solution to eliminate bad debt risks from remaining Waultswap positions
      • AIP-5: Interest Model Adjustment
      • AIP-6.1: Limiting Access to Automated Vault
      • AIP-6.2 Limiting Access to Automated Vault
      • AIP-7: Handling of a recent bad debt on Fantom Network
      • AIP-8.1: Increase AUSD utility by providing access to high-leveraged AVs
      • AIP-8.2: Increase AUSD utility by providing access to high-leveraged AVs
      • AIP-9: Deposit Liquidation Treasury Funds into Lending Pools while waiting to be used for buyback
      • AIP-10: Further optimizing the borrowing interest rate slope
      • AIP-11: Adjust Stability Fee for AUSD to help restore peg
      • AIP-12: Handling of bad debt from the recent stkBNB's depeg
      • AIP-13: Removing xALPACA requirement for accessing high-leveraged Automated Vaults
      • AIP-14: Close remaining LYF positions on stkBNB-BNB pool to avoid any potential future bad debt
      • AIP-15.1: Incentives for New Upcoming Products (Perp, AF2.0)
      • AIP-15.2: Distribution Method - Incentives for New Upcoming Products (Perp, AF2.0)
      • AIP-15.3: Incentives Amount for Perp - Incentives for New Upcoming Products (Perp)
      • AIP-15.4: Incentives Amount for AF2.0 - Incentives for New Upcoming Products (AF2.0)
      • AIP-15.5: Sources for Incentives - Incentives for New Upcoming Products (Perp, AF2.0)
      • AIP-16: Adjusting Slope3 max interest rate
      • AIP-17: Handling of extra ALPACA tokens from the AIP-15 incentives
      • AIP-18: Sunsetting Leveraged Yield Farming Support for MDEX pools
      • AIP-19: Implement Shielded Voting
      • AIP-20: Aligning AF1.0 lending performance fee structure with AF2.0
      • AIP-21.1: Adjusting bad debt repayment scheme from the stkBNB de-peg event
      • AIP-21.2: Adjusting bad debt repayment scheme from the stkBNB de-peg event
      • AIP-22: Paid Marketing Budget for Alperp and AF2.0
      • AIP-23: Sunsetting Leveraged Yield Farming Support for TUSD
      • AIP-24.1: New Governance Vault Implementation
      • AIP-24.2: New Governance Vault Implementation - Unlocking Period
      • AIP-24.3: New Governance Vault Implementation - Transferability
      • AIP-24.4: New Governance Vault Implementation - Early Withdrawal
      • AIP-24.5: New Governance Vault Implementation - Early Withdrawal Penalty Model
      • AIP-25: Migration from AF1.0 -> AF2.0
      • AIP-26: Transitioning the Governance Vault
      • AIP-27: Alpaca Insurance Plan Update
      • AIP-28: Updating Governance Voting Structure
      • AIP-29.1: Converting Remaining BUSD in AF1.0 lending into USDT
      • AIP-29.2: Charging conversion fees to the remaining BUSD depositors
      • AIP-29.3: Determining the conversion fees
      • AIP-30: New Product Proposal - Stablecoin
      • AIP-31.1 Handling of remaining assets in the AUSD’s stable swap module
      • AIP-31.2 Handling of remaining assets in the AUSD’s stable swap module
      • AIP-32: Distribution Plan to Lenders of Stablecoins from THE Liquidation
    • ⏭️Step-by-Step Guide
      • Lock ALPACA in Governance Vault
      • Lock more ALPACA/Extend Lock Time
      • Claim Rewards from Governance Vault
      • Add Custom tokens to your MetaMask
      • Vote on Alpaca Improvement Proposal (AIP)
      • Early Withdraw ALPACA from Governance Vault
      • Withdraw ALPACA from FANTOM Governance Vault on BNB Chain
      • Withdraw xALPACA from old Governance Vault
  • ALPIES
    • 🌗Introduction to Alpies
    • 🚋Bridging your Alpies
      • Bridging Alpies from ETH to BNB Chain
      • Bridging Alpies from BNB Chain to ETH
    • ⚡Boosted Leverage
  • Join the Herd (AlpaCareers)
    • 🚀Hiring Section
  • Help center
    • 👩‍🏫Alpaca Academy
      • Lesson 0 - How to Buy Alpaca and Start Earning Yields for Beginners(Lending+Staking)
      • Lesson 1 - Alpaca Finance’s Unique Use-Case — Shorting at a Profit
      • Lesson 2 - Introduction to Hedging with Double-Sided Borrowing
      • Lesson 3 - Liquidation Risk in Leveraged Yield Farming
      • Lesson 4 - Open/Close Positions With 0 Swap Fees
      • Lesson 5 - The Truth About Impermanent Loss and Common Misunderstandings
      • Proficiency Exams (earn NFTs)
    • 📚General Knowledge Articles
      • Navigating the Economic and Safety Landscape of DeFi
      • Yield Farming and Liquidity Mining: The Engines of DeFi Growth
      • Leveraging Advanced DeFi Instruments for Secured Funds Compounding with Alpaca Finance
      • Get Stablecoin Yields and Build Crypto Savings with Alpaca Finance's Lending Platform
      • Understanding the Basics of Decentralized Finance (DeFi)
      • Advanced Ways of Decentralized Trading with Alpaca Finance’s Perpetual Futures Exchange
      • Maximize Your Returns with Automated Vaults and Leveraged Yield Farming on Alpaca Finance
      • What does 'buy and hold' or HODL mean in investing?
      • What is DeFi Governance and why is it important?
      • What exactly are DeFi Money Markets?
      • What is yield farming and how does it differ from traditional investing?
      • What exactly does 'unlocking liquidity from long-term holdings' mean?
    • ❓FAQ
    • 🧰Useful Tools
    • 📘Terminologies & Calculation Methodology
      • 🧮APY Calculation
      • 📈Profit/Loss Calculation
    • ⚠️Common Error Messages
    • 💸Third-Party Earning Opportunities with ALPACA
  • Developers
    • 🐞Bug Bounty Program
    • 🎛️Protocol Configurations
    • 💻Integrating With Alpaca Finance
    • 🏛️AF2.0 Repurchasing Guide
    • ⚡AF2.0 Flashloan Guide
  • Past Products
    • 💵AUSD (Old)
      • 💵Introduction to AUSD
      • 💹How to Participate
      • 💦AUSD Liquidation
      • 〰️AUSD Price Stability Module
      • ❗Risks
      • ⏭️Step-by-Step Guide
        • Open an AUSD Position
        • Adjust an AUSD Position
        • Close/Partially Close an AUSD Position
        • Add/remove AUSD-3EPS LP tokens
        • Redeem AUSD for ALPACA
      • 📔AUSD Parameters
    • 🗳️Governance Vault (Old)
    • ⚡Early Withdrawal (Old)
    • 🌿Grazing Range (Old)
    • 💪Stronk Vault
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  1. Past Products
  2. AUSD (Old)

Introduction to AUSD

Persuant to AIP-25's resolution, AUSD has been sunsetted. All remaining AUSD positions were force-closed on October 17th. You can read more on AUSD sunsetting & AF1.0 Batch#1 Migration Plan article. Thus, this page is only a referenced information before it is sunsetted.

AUSD (AlpacaUSD) is an auto-farming stablecoin that earns passive yields for you in the background. Now, instead of paying for loans, you can get loans while earning on your collateral.

AUSD is overcollateralized, decentralized, and reinforced with multi-layered pegging mechanisms so that it does the one thing stablecoins are supposed to do--remain stable at $1.

Lenders in Alpaca Finance can collateralize their deposits(ibTokens) to borrow AUSD, which they can use inside and outside Alpaca Finance to earn additional yields. Lenders are thus able to continue earning Lending APR and Staking APR, while also borrowing AUSD to use as they see fit, unlocking even higher profit potential and greatly increasing the flexibility and use cases of their capital.

Some potential uses of AUSD include:

  • Staking AUSD to earn additional yields

  • Selling AUSD into lending assets to leverage up lending positions (can also borrow more AUSD)

  • Selling AUSD into other assets to open high-yield leveraged yield farming positions

  • Selling AUSD into other assets to deploy in external protocols

AUSD makes lending in Alpaca Finance more capital efficient and flexible than in any other lending platform, fortifying Alpaca Finance's place as a leading DeFi 2.0 protocol.

How does AUSD work?

AUSD is fully backed with robust risk management parameters. The stablecoin is overcollateralized by a collection of top digital assets including ETH, BNB, USDT, BUSD, BTCB and TUSD.

AUSD is a fork of the battle-tested MakerDAO, with many improvements. Some of the key features are:

Farmable Collateral Module: For most lending protocols, users have to choose between staking their assets to earn yields or staking their assets as collateral to borrow against. With AUSD, users no longer have to make this tradeoff. We have structured our AUSD smart contracts in such a way that while the collateral can be used to borrow AUSD, it can also earn Lending APR in our platform, which can also compose with other protocols, meaning that in the future, the collateral can potentially earn additional yields for the users on external protocols.

Because the Lending APR alone is much higher than the stability fee for AUSD(2% for most collateral types), the loans are effectively better than interest-free, they are yield-bearing auto-farming loans.

Efficient pegging: Being overcollateralized is not enough to maintain a stablecoin peg. In the case of MakerDAO, they can also adjust borrowing interest on DAI up and down for the collateral assets. In a situation where DAI's price goes above $1, Maker can lower borrowing interest, incentivizing users to mint new DAI which creates selling pressure to bring DAI's price back down to the $1 peg. In the case where DAI goes below $1, Maker can increase borrowing interest, incentivizing users to buy back DAI to close their borrowing positions because they have become more expensive, which creates buying pressure to bring the price back up to $1. AUSD also has this mechanism.

Moreover, AUSD also has an internal Stable Swap Module, similar to Maker’s Price Stability Module (PSM), which allows users to buy and sell AUSD for BUSD at a rate of 1:1 with low fees. This facilitates arbitrageurs in maintaining the peg at $1.

Robust and Gentle Liquidation: AUSD uses gentle liquidation, meaning when an AUSD borrowing position faces liquidation, only a small portion of the position is liquidated until it is brought back to health. The max liquidation size is limited to the Close Factor, currently set to 25% of a position’s Debt Value. This gentle liquidation model results in lower associated costs and liquidation risk for AUSD borrowers, while still preventing the risk of bad debt.

AUSD also uses a robust atomic liquidation model. This has advantages over Maker DAO’s Dutch auction model, because AUSD’s model is simpler and better optimized for preventing bad debt.

Handling of Bad Debt: While we have made sure to set up the protocol structure and parameters to be very conservative, we will also have a backstop in place to handle the unlikely event of bad debt. When we launch our governance vault within the next 1-2 months, we will also launch an Insurance Plan. In this plan, in the case of a loss event such as bad debt, 50% of the Protocol APR going to the governance vault will be set aside as remuneration for this event, until the loss is covered. This way, the risk of bad debt will not only be minimized but also have coverage.

AUSD's code is completely open sourced and can be reviewed in our Github repository here: https://github.com/alpaca-finance/alpaca-stablecoin

Security

As always, security is our highest priority. AUSD smart contracts have passed audits from three professional security firms.

PeckShield Audit Report: Click here

InSpex Audit Report: Click here

SlowMist Audit Report: Click here

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