Liquity as a protocol is non-custodial, immutable, and governance-free.
Stable-value assets are an essential building block for Ethereum applications and have grown to represent tens of billions of dollars in value.
However, the vast majority of this value is in the form of fiat-collateralized stablecoins like Tether and USDC. Decentralized stablecoins like DAI and sUSD make up only a small portion of the total stablecoin supply, meaning the vast majority of stablecoins are centralized.
Liquity addresses this by creating a more capital efficient and user-friendly way to borrow stablecoins. Furthermore, Liquity is governance-free, ensuring that the protocol remains decentralized.
Liquity’s key benefits include:
- Governance free — all operations are algorithmic and fully automated, and protocol parameters are set at time of contract deployment
No. Liquity has no admin key, and nobody can alter the rules of the system in any way. The smart contract code is completely immutable.
You first need to choose a web interface (aka frontend) to access the system. The core team building the protocol will not operate a frontend. Liquity is instead accessed by third-party frontend applications and integration services.
LQTY is the secondary token issued by Liquity. It captures the fee revenue that is generated by the system and incentivizes early adopters and frontends. The total LQTY supply is capped at
100,000,000 tokens. For more information on how the tokens are allocated and released over time, please refer to LQTY Rewards and Distribution.
To become a Stability Pool depositor or LQTY staker, you need to have LUSD and/or LQTY tokens. LUSD can be borrowed by opening a Trove while LQTY can be earned as a Stability Pool depositor. You can also use Uniswap or another (decentralized) exchange to buy the tokens on the open market.
There is a one-off fee whenever LUSD is borrowed, and when LUSD is redeemed:
- For borrowers, there is a borrowing fee on loans as a percentage of the drawn amount (in LUSD).
- For redeemers, there is a redemption fee on the amount paid to users by the system (in ETH) when exchanging LUSD for ETH. Note that redemption is separate from repaying your loan as a borrower, which is free of charge.
Both fees depend on the redemption volumes, i.e. they increase upon every redemption in function of the redeemed amount, and decay over time as long as no redemptions take place. The intent is to throttle large redemptions with higher fees, and to throttle borrowing directly after large redemption volumes. The fee decay over time ensures that the fee for both borrowers and redeemers will “cool down”, while redemptions volumes are low.
The fees cannot become smaller than
0.5%(except in Recovery Mode), which protects the redemption facility from being misused by arbitrageurs front-running the price feed. The borrowing fee is capped at
5%, keeping the system (somewhat) attractive for borrowers even in phases where the monetary is contracting due to redemptions. Other than that, the two fees are identical and are depicted as "Fee" in the following exemplary chart:
There are two different ways to generate revenue using Liquity:
As a non-custodial system, all the tokens sent to the protocol will be held and managed algorithmically without the interference of any person or legal entity. That means your funds will only be subject to the rules set forth in the smart contract code, which is being audited twice by Trail of Bits and once by Coinspect (find their reports here).
There are two scenarios under which you may lose a part of your funds:
- You are a Stability Pool depositor and your deposited LUSD is used to repay debt from liquidated borrowers. Since liquidations are triggered any time borrowers’ collateral drops below
110%, you will receive more ETH in return with a very high probability. However, if ETH decreases in price and you maintain exposure, you may lose value in your total pool deposits.