Byte offset within blk?????.dat where this block's data is stored
Declared in <chain.h>
[[guarded_by(0x7fb95cc62c28), guarded_by(0x7fb97da0e748), guarded_by(0x7fb969040c38), guarded_by(0x7fb96e677488), guarded_by(0x7fb96bda8ee8), guarded_by(0x7fb96a98efc8), guarded_by(0x7fb97e605ba8), guarded_by(0x7fb96f3e51c8), guarded_by(0x7fb958b0ab68), guarded_by(0x7fb98541f648), guarded_by(0x7fb964557518)]]
unsigned int nDataPos = {0};