Endur.Fi Staked STRK (xSTRK) is a token representing your staked STRK in Endur.fi, combining the value of your initial deposit with any staking rewards. xSTRK tokens are minted upon deposit and burned upon redemption. The token allows STRK token holders to stake their STRK while maintaining liquidity. xSTRK can be used as collateral across Vesu and Nostra Finance (money markets). Endur has also created a dashboard to directly stake on validators (native staking).