Overview

sYUSD is the yield-bearing, staked version of YUSD. When you deposit YUSD into the staking contract you receive sYUSD, which:

Represents your proportional share of the staking pool.

Automatically accrues BTC funding-rate yield.

Appreciates in value relative to YUSD over time.

Launch exchange rate: 1 sYUSD = 1 YUSD

Afterwards: 1 sYUSD > 1 YUSD as rewards accumulate.

The StakedYUSD smart contract implements the ERC4626 Token Vault standard for composability.

This popular standard is widely used for onchain reward-accruing; thus, it is expected that other user interfaces beyond the Aegis.im dAPP may likely support YUSD staking in the future. Various deposit and redeem functions are exposed, enabling staking with or without a slippage threshold, and with or without an ERC2612 Permit signature authorizing the transfer of YUSD.