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Slashing Fees

Unavailability​

Slashing penalties are generally incurred because a node fails to successfully produce a block during its designated turn in the round-robin block-mining procedure as described in the Validator Election section.

  • If a validator node fails to mine 50 blocks in a row, the CORE token rewards the validator has accrued so far are slashed completely.
  • If a validator node fails to mine the first 49 blocks in a round, and then misses the last block of the same round, this will lead to slashing of the entire CORE token rewards the validator has accrued so far.
  • If they fail on the last 50 blocks of the round, they surrender everything they’ve earned.
  • If a validator fails to mine 150 blocks in a row, they surrender their share of the daily CORE token rewards, they lose 10% of the deposit made to become a validator, and they are jailed for three days, which means they aren’t eligible to be elected to the validator set.

Double Sign​

Anyone can submit a slash request on Core blockchain with the evidence of Double Sign activity on Core.

Evidence Validation​

  • Two block headers have the same height and the same parent block hash
  • Two block headers are sealed by the same validator
  • Two signatures of these two blocks must not be the same
  • The validator should be in the set of current round’s validators.

If the evidence is valid:

  1. 1,000 CORE i.e., the entire self-margined CORE of the validator will be slashed.
  2. The slashed validator would be jailed and barred from the network forever
  3. 500 of slashed CORE would be allocated to the submitter as a reward
  4. The rest of slashed CORE will transfer into System Reward Pool