In February 2020, SCP’s supply went through a precision change, or to be more precise, a change to how the precision is represented to wallet and exchange users. It involved the moving of the decimal 3 places to the left, so that the total supply is in millions, not billions. Technically, the supply of SCP didn’t change, only the representation of it. Visually, transactions on the ScPrime network are seen in SCP, but they actually occur in hastings, which is the smallest unit of a ScPrimeCoin (24 digits or 1⁰²⁷ pre change,1⁰²⁴ post change). The smart contracts that the network uses requires very small transactions amounts because they are calculated as Hastings per Byte per block. The adjustment just changed this representation of a single SCP for every place it is used.