What is slashing?
Slashing is the cryptoeconomic penalty mechanism in Proof-of-Stake (PoS) blockchains that forfeits a portion of a validator’s staked collateral when the validator commits a protocol-defined offence. Slashing aligns validator incentives with honest behaviour: misbehaviour costs real money, whereas in Proof-of-Work the worst penalty is foregone block rewards. Ethereum, Cosmos, Solana, Polkadot all implement variants of slashing.
Slashable offences (Ethereum example)
- Double-signing: proposing two different blocks for the same slot. Major offence; partial-to-full stake loss.
- Surround votes: attesting to conflicting checkpoints. Major offence.
- Liveness failures: not proposing/attesting when scheduled — inactivity leak (gradual penalty), not slashing per se.
Slashing penalties (Ethereum, post-Capella)
- Initial penalty: ~1 ETH (1/32 of 32 ETH stake).
- Correlation penalty: increases with number of validators slashed in same epoch (mass-slashing scaled).
- Forced exit: slashed validator is removed from validator set.
- Maximum slashing: in worst case (mass coordinated attack), entire 32 ETH stake can be lost.
Türk staker / kurumsal bakış
Türk yatırımcılar ETH staking’ine doğrudan (32 ETH solo) veya likit staking havuzları (Lido, Rocket Pool, Coinbase) üzerinden katılır. Solo staking slashing riskini doğrudan taşır; havuz katılımcıları operatör riskini Lido DAO veya servis sağlayıcıya devreder. Yerel CASP’ler (Btcturk, Binance TR) staking ürünleri sunduğunda slashing riski sağlayıcıya geçer ancak müşteri “yetkilendirilmiş hizmet” beklentisi taşır.
Do: for solo staking, use battle-tested clients (Lighthouse, Prysm, Teku); set up doppelganger detection; never run same validator on two machines.
Don’t: over-concentrate in a single liquid staking provider — correlated slashing across one operator can wipe a large stake position.