Proof-of-Stake (POS) consensus

Proof-of-Stake replaces mining hardware with capital at risk. Instead of burning electricity to win the right to add a block, validators lock up coins as collateral; if they sign conflicting or invalid blocks, part of that stake is destroyed. The result is a network that reaches the same finality guarantees at a small fraction of the energy cost.

The trade-offs are real and worth understanding before you stake. Capital concentration matters more than hash-rate concentration, because stake compounds — large validators earn rewards that increase their future weight. Unstaking is rarely instant: most chains impose a bonding period of days or weeks during which your coins cannot be sold. And "slashing" is not theoretical; validators lose funds to misconfiguration far more often than to malice.

Here you will find explanations of how PoS variants differ, along with reviews of specific proof-of-stake networks and what their validator economics look like in practice.