# Banking system

This is the place where you stake BNS to earn BND every epoch when the Bank contract mints a fresh batch of BND. Epochs occur every 8 hours (calculated using block time) with an initial expansion rate of 1% of BND's current total supply, halving every 90 days.

Minted BND are sent to the Bank (55%) to reward stakers and the Treasury (45%) for project development. Claiming reward BND or withdrawing staked BNS triggers a temporary cooldown period, limiting users' interactions with the Bank for:

| Claim BND rewards | Withdraw BNS |
| ----------------- | ------------ |
| 3 Epochs          | 6 Epochs     |

:warning: Please note:

1. You will automatically claim all available BND rewards if you choose to withdraw BNS.
2. There is no cooldown period for staking BNS.