It doesn't, proof of work is what makes Bitcoin unique.
(1) Having to spend physical resources better aligns incentives
(2) Proof of work is decentralized and fair
It's a worthwhile tradeoff.
It's a worthwhile tradeoff.
50% attack is real.
The best is our grown PoS system we currently call us dollar, euros etc.
Bitcoin not even solved the account recovery feature or any fraud protection.