Basic questions about crypto

Assalamu Alaikum,

I’ve been interested in the topic recently and read a lot of things about it everywhere.
I have some really basic questions that I need to clear up in order to feel ok with crypto trading.
Is it halal to buy cryptocurrencies (the ones listed as halal), then keep them for as long as I wish to sell them when I think the price is good ?
I’ve seen that the site recommends Coinbase and Binance, are there some points I should be aware of going to these sites ? I’ve seen that there are some leveraging and margin aspects sometimes on these sites, aren’t these haram ?

Thank you everyone for your help.

Wa alaykum salaam,

On Binance, abstain from the futures market and margin trading.

Salam Mufti Faraz,
Any thoughts on Defi?
regards

Jazak Allah Mufti,

Thank you a lot for your answer, I will do!