Network validators verify all user transactions. If all validators reach consensus that a transaction is valid, it is included in the blockchain. Invalid transactions are rejected.
If a validator does not participate in block creation and transaction signing for a significant amount of time during a validation round, it is potentially fined. As of April 2023, the Standard fine accrued is 101 TON.
Any network participant can file a complaint if they believe a validator is misbehaving. During this process, the participant issuing the complaint must attach cryptographic proofs of misbehavior for Elector submission. All validators operating on the network check the validity of complaints and vote whether they will pursue the complaint collectively. Upon reaching 66% validator approval, a slashing penalty is deducted from the validator and withdrawn from the validator’s total stake.