Consensus Keys

The "consensus key" feature allows bakers to use a different key, called the consensus key. It will allow for baking and signing consensus operations (i.e. preattestation and attestation). For more detailed information on consensus keys, refer to this documentation

Starting from Lima protocol, these 2 new operations will be available:

Update Consensus Key

This is a manager operation that must be signed by the manager key of the baker. This operation updates the consensus key of the baker to PUBLIC_KEY starting from the current cycle plus PRESERVED_CYCLES + 1. A consensus key can only be used by a single baker, the operation will fail otherwise.

Examples

const op = await Tezos.contract.updateConsensusKey({
    pk: 'PUBLIC_KEY'
});

await op.confirmation();

• pk is the public key you want the consensus key to point to

Drain Delegate

This is an operation that must be signed by the active consensus key consensus_pkh of the baker baker_pkh. This operation immediately transfers all the spendable balance of the baker_pkh’s implicit account into the destination_pkh implicit account. It has no effect on the frozen balance. This operation is included in pass 2 (anonymous operations). So drain operations don’t compete with regular manager operations for gas and block size quota; the 1M restriction (one-operation-per-manager-per-block) applies to drain operations as well, meaning that a drain for a baker and a transfer operation from the same baker are in conflict. As an incentive for bakers to include drain operations, a fixed fraction of the drained baker’s spendable balance is transferred as fees to the baker that includes the operation, i.e. the maximum between 1tz or 1% of the spendable balance.

Examples

const drain = await Tezos.contract.drainDelegate({
    consensus_key: 'CONSENSUS_PKH',
    delegate: 'BAKER_PKH',
    destination: 'DESTINATION_PKH',
});
await drain.confirmation();

• consensus_key is the public key hash of the updated consensus key
• delegate is the public key hash of the baker/delegate
• destination is the public key hash of the destination account