Type Definition polkadot_primitives::v2::Balance
source · pub type Balance = u128;
Expand description
The balance of an account.
128-bits (or 38 significant decimal figures) will allow for 10 m currency (10^7
) at a resolution
to all for one second’s worth of an annualised 50% reward be paid to a unit holder (10^11
unit
denomination), or 10^18
total atomic units, to grow at 50%/year for 51 years (10^9
multiplier)
for an eventual total of 10^27
units (27 significant decimal figures).
We round denomination to 10^12
(12 SDF), and leave the other redundancy at the upper end so
that 32 bits may be multiplied with a balance in 128 bits without worrying about overflow.