pub const BLOSSOM_POW_TARGET_SPACING_RATIO: u32 = 2;
Used as a multiplier to get the new halving interval after Blossom.
Calculated as PRE_BLOSSOM_POW_TARGET_SPACING / POST_BLOSSOM_POW_TARGET_SPACING in the Zcash specification.
PRE_BLOSSOM_POW_TARGET_SPACING / POST_BLOSSOM_POW_TARGET_SPACING