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Getting started with STBL is simple. Below is a quickstart guide to minting, querying, and redeeming with STBL contracts.

Step 1: Minting USST​

To mint USST, interact with STBL’s minting contract by providing tokenized RWA collateral (e.g., T-Bills or IIAs). The minting process automatically issues:

  • USST: The stablecoin pegged to $1.
  • YLD: The yield-bearing token representing interest accrued from the collateral.

Example Contract Interaction:

mint(uint256 collateralAmount) {
    // Provide collateral
    // Receive USST and YLD tokens
}

The minted USST can be used for transactions, staking in LAMP, or liquidity provision.

Step 2: Querying YLD​

You can query YLD to track the yield generated by the underlying asset. The contract updates metadata in real-time, reflecting the current accrued interest and maturity schedule.

Example Contract Interaction: solidity

getYLDYield(address user) {
    // Query the yield associated with the user's YLD token
    return userYLD.balanceOf(address);
}

Step 3: Redeeming Collateral​

To redeem the underlying collateral, return both USST and YLD tokens to the STBL. The contract then releases the collateral and burns the tokens.

Example Contract Interaction:

redeem(uint256 yldAmount) {
    // Return USST and YLD
    // Unlock collateral and burn tokens
}

This ensures that the collateral can only be unlocked once both the principal (USST) and yield (YLD) components are returned.