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Collateral Ratios

Target CR and Effective CR / The difference

Target CR

TCR (Target CR) is the ratio for reaching the target aUSD price ($1):
Usage
Description
Possible State
Behavior
Minting
TCR calculates and establishes one time per hour, with the possible step of 0.25%
  1. 1.
    aUSD < $1 (TWAP)
  2. 2.
    aUSD > $1 (TWAP)
  1. 1.
    The protocol increases TCR
  2. 2.
    The protocol lowers TCR

Effective CR

ECR (Effective CR) represents the level of aUSD collateralization:
Usage
Description
Possible State
Behavior
Redeeming
After redeeming, the user obtains the needed quantity of USDC + ATM tokens for each aUSD to attain an equivalent value in dollar terms
  1. 1.
    TCR < ECR
  2. 2.
    TCR > ECR
  1. 1.
    The protocol is overcollateralized
  2. 2.
    The protocol is undercollateralized
ECR=Total Collateral ValueTotal aUSD SupplyECR = \cfrac{\text{Total Collateral Value}}{\text{Total aUSD Supply}}