How to get or redeem?

How to get bbBNC:

Lock vBNC and receive bbBNC. The bbBNC value is proportional to the amount and duration staked (up to a maximum of 4 years). Each address is associated with a single bbBNC expiry date, and bbBNC can't transfer.

BNC -> vBNC -> bbBNC

The bbBNC value is a key indicator for participating in dividends. Simply put, the higher the proportion of bbBNC value in the overall, the more you might get in various bbBNC holdings benefits.

Your bbBNC value will decrease over time and will reach zero once the lock duration ends. At this point, your staked vBNC will be unlocked.

Locking Duration (per vBNC)	bbBNC received
3 months	0.296875
6 months	0.3424
1 year	0.4375
4 years	1

Redeem bbBNC to unlock vBNC in advance:

For users who need to unlock bbBNC immediately to retrieve locked vBNC in advance, Bifrost offers a method of early unlocking. However, this comes with a certain slash, you may LOSE YOUR vBNC PRINCIPLE by early redemption. The relevant formula is as follows:

Redemption Slash % = ((Remaining locked blocks + 5,256,000) / 26,280,000)^2

The vBNC that users can get by unlocking in advance = Locked vBNC * (1 - Redemption Slash %)

Unlock Time left	Unlock Block left	Redeem Immediately Slash
3 Months	1,314,000	6.25%
6 Months	2,628,000	9.00%
1 Year	5,256,000	16.00%
2 Year	10,512,000	36.00%
3 Year	15,768,000	64.00%
4 Year	21,024,000	100.00%