Exactly. In fact, no cards are needed. No POW at all.. but you can mine it as if you had equal hash rate as everyone else mining. You instead use your digital ID as if it were a miner and every block the person with the best digital ID for a given block number wins. Some randomization involved.
So it's like every block either you have the winning hash or not and you can't just try another hash.
Not exactly, they still need to process transactions for our blockchain(s) in order to earn rewards. It's mining in the sense that Proof of Stake staking is mining.
Can you think of a better way to easily and quickly express this idea?
Ok, so it's some sort of virtual mining then? Honestly not a bad idea to generate passive income, I'd get an ID to participate