When staking STX, you do not earn Bitcoin directly. You earn STX, but in the form of BTC.
How it works:
Locking STX: You lock your STX in a smart contract for a certain period of time.
Incentives for PoX: For participating in PoX (Proof of Stake), you receive a reward in the form of new STX.
Conversion to BTC:
You can convert the STX you receive into BTC on a decentralized exchange (DEX) such as Arkadiko.
Conversion rate: 1 STX = 1 BTC.
Passive income:
You can earn passive income by locking up your STX.