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This section specifies the slashing module of the Cosmos SDK, which implements functionality first outlined in the Cosmos Whitepaper in June 2016.

The slashing module enables Cosmos SDK-based blockchains to disincentivize any attributable action by a protocol-recognized actor with value at stake by penalizing them ("slashing").

Penalties may include, but are not limited to:

  • Burning some amount of their stake
  • Removing their ability to vote on future blocks for a period of time.

This module will be used by the Cosmos Hub, the first hub in the Cosmos ecosystem.


  1. Concepts
  2. State
  3. Messages
  4. Begin-Block
  6. Events
  7. Staking Tombstone
  8. Parameters
  9. Client