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Curve Stablecoin: Overview

Curve Stablecoin infrastructure enables users to mint crvUSD using a selection of crypto collaterals. Adding new collaterals is subject to DAO approval.

crvUSD is designed to provide a more capital-efficient stablecoin mechanism and smoother liquidations, while maintaining a decentralized design which the Curve DAO governs.

GitHub

The source code for all releveant stablecoin contract can be found on GitHub . Related deployments can be found here.

Curve Stablecoin Infrastructure Components¶

  • crvUSD

    crvUSD token which is based on the ERC-20 Token Standard.

    crvUSD.vy

  • Savings crvUSD

    Savings crvUSD, abbreviated as scrvUSD, is a yield-bearing version of crvUSD built on top of a Yearn V3 Vault. It earns a portion of the yield generated by borrowers who pay interest to mint crvUSD.

    Savings crvUSD

  • Controller

    The Controller is the contract the user interacts with to create a loan and further manage the position. It holds all user debt information. External liquidations are also done through it.

    Controller.vy

  • LLAMMA

    LLAMMA is the market-making contract that rebalances the collateral. As the name suggests, this contract is responsible for liquidating collateral. Every market has its own AMM (created from a blueprint contract) containing the collateral asset and crvUSD.

    LLAMMA.vy

  • Factory

    The Factory is used to add new markets, raise or lower debt ceilings of already existing markets, set blueprint contracts for AMM and Controller, and set fee receiver.

    Learn more

  • Monetary Policy

    Monetary policy contracts are integrated into the crvUSD system and are responsible for the interest rate of crvUSD markets.

    Learn more

  • PegKeepers

    PegKeepers are contracts that help stabilize the peg of crvUSD. They are allocated a specific amount of crvUSD to secure the peg.

    Learn more

  • Price Aggregator

    The AggregatorStablePrice contract is designed to aggregate the price of crvUSD based on multiple Curve pools. This price is mainly used as an oracle for calculating the interest rate, providing an aggregated and exponential moving average price.

    Learn more

  • Oracles

    Oracle contract used for collaterals in the markets.

    Oracles

  • Flash Loan

    The FlashLender.vy contract allows users to take out a flash loan for crvUSD.

    FlashLender.vy