Voting Power Calculation

Voting power in bCC contracts is calculated based on a user's past and current interactions. The _bias variable in our contract code represents the voting power of a user during their last interaction.

_epoch: uint256 = self.user_point_epoch[addr]
last_point: Point = self.user_point_history[addr][_epoch]
_bias: int128 = last_point.bias

return _bias

To derive the current voting power, we use:

_bias -= last_point.slope * convert(_t - last_point.ts, int128)

In essence, userVP = last_interaction_VP - interaction_slope * (current_timestamp - last_interaction_timestamp). Slope and bias calculations occur within the _checkpoint() function, which is called when:

1. A lock is created.

2. A lock amount increases.

3. A cooldown starts.

4. A cooldown gets renewed.

5. A lock gets withdrawn.