Crypto Staking in Mines

As-salamu alaykum,

I know tokens are not screened in the forum but I have question regarding staking, is it permissable to Stake token for Rewards in decentralized exchange that is using automated market-making (AMM).

For example
Is it halal to stake token for a fixed amount and receive more tokens for staking your token in the crypto mine of that exchange.

Thank you.