Many of these parameter values can be updated via on-chain governance. If you require absolute certainty as to their values, it is recommended you directly check the constants by looking at the chain state and/or storage.
Periods of common actions and attributes
NOTE: Kusama generally runs 4x as fast as Polkadot, except Polkadot also has 6 second slots. See Polkadot Parameters for more details on how Kusama's parameters differ from Polkadot's.
- Slot: 6 seconds *(generally one block per slot, although see note below)
- Epoch: 1 hour (600 slots x 6 seconds)
- Session: 1 hour (6 sessions per Era)
- Era: 6 hours (3600 slots x 6 seconds)
*A maximum of one block per slot can be in a canonical chain. However, occasionally a slot will be without a block in the chain. Thus, the times given are estimates. See Consensus for more details.
|Voting period||7 days||100,800||How long the public can vote on a referendum.|
|Launch period||7 days||100,800||How long the public can select which proposal to hold a referendum on, i.e., every week, the highest-weighted proposal will be selected to have a referendum.|
|Enactment period||8 days||115,200||Time it takes for a successful referendum to be implemented on the network.|
|Term duration||1 day||14,400||The length of a council member's term until the next election round.|
|Voting period||1 day||14,400||The council's voting period for motions.|
The Kusama Council consists of up to 19 members and up to 19 runners up.
|Cool-off period||7 days||604,800||The time a veto from the technical committee lasts before the proposal can be submitted again.|
|Emergency voting period||3 hours||1,800||The voting period after the technical committee expedites voting.|
Staking, Validating, and Nominating
|Term duration||6 hours||3,600||The time for which a validator is in the set after being elected. Note, this duration can be shortened in the case the a validator misbehaves.|
|Nomination period||6 hours||3,600||How often a new validator set is elected.|
|Bonding duration||7 days||604,800||How long until your funds will be transferrable after unbonding. Note that the bonding duration is defined in eras, not directly by slots.|
|Slash defer duration||7 days||604,800||Prevents overslashing and validators "escaping" and getting their nominators slashed with no repercussions to themselves. Note that the bonding duration is defined in eras, not directly by slots.|
|Periods between spends||6 days||86,400||When the treasury can spend again after spending previously.|
Burn percentage is currently
0.20%, though instead of being burned this amount is temporarily
redirected into the Society's treasury to fund growth.
KSM have 12 decimals of precision. In other words, 1e12 (1,000,000,000,000 or one trillion) Plancks make up a single KSM.