BlockHeader

write_pre_pow

/// Write the pre-hash portion of the header

pre_pow_hash

    /// Returns the pre-pow hash, as the post-pow hash
    /// should just be the hash of the POW

overage

    /// The "overage" to use when verifying the kernel sums.
    /// For a block header the overage is 0 - reward.

total_overage

    /// The "total overage" to use when verifying the kernel sums for a full
    /// chain state. For a full chain state this is 0 - (height * reward).

total_kernel_offset

/// Total kernel offset for the chain state up to and including this block.