Djed is the first over-collateralized ADA-backed stablecoin contract on the Cardano network. It operates by keeping a reserve of base coins (ADA), and minting and burning stablecoins and reserve coins. The contract maintains the peg of stablecoins to a target price by buying and selling stablecoins, using the reserve, and charging fees, which accumulate in the reserve. The ultimate beneficiaries of this revenue stream are holders of reserve coins, who boost the reserve with funds while assuming the risk of price fluctuation.
Djed research paper was written and developed by the IOG team (Joachim Zahnentferner,Dmytro Kaidalov,Jean-Frédéric Etienne,Javier Roberto Diaz) and is powered by Coti.
Djed stability mechanism is based on a collateral ratio in the range of 400%-800% for $Djed and $Shen. ADA prices fluctuations are offset by Shen, covering shortfalls and guaranteeing the collateralization rate.
The ADA reserve pool is not managed by market makers, but by users who mint the $Shen reserve coin and add ADA to the pool. This provides a decentralized aspect to the $Djed mechanism. $Shen holders are incentivized to provide liquidity through fees.
As $Djed can be over collateralized (up to 8x), the risk of $Djed being unpegged decreases. This means that for every 1 $Djed minted, there are 3–7 dollars worth of $ADA in the reserve pool. If the ratio falls below 400%, users will not be able to mint $Djed, and $Shen holders won’t be able to burn their $Shen. So in the event of a market dip there is a security blanket for $Djed holders that ensures its sustainability. The minting of new $Shen is also supervised in order to maintain the balances stabilized, and ensure there will always be enough ADA in the pool to provide a dollar equivalent value to the $Djed when burning it.
