Instance Property

bits

The difficulty target in compact (nBits) encoding — the threshold the block’s hash must meet or fall below for the proof-of-work to be valid.

var bits: UInt32 { get }

Discussion

Decodes per Bitcoin Core’s arith_uint256::SetCompact: top byte = exponent, low 23 bits = mantissa; the full 256-bit target is mantissa << 8*(exponent-3).