Proof of Stake (POS)

Alsalam alikom
what sharia says about proof of stack POS for below (if it is hallal or haram)
1- US Dollar
2-Polkadot (DOT) coin
3- Kusama (KSM) coin
Jazak allah kol khair
جزاك الله كل خير

A post was merged into an existing topic: Investing Question: Is participating in a proof of stake network halal?