We generally discuss quantum attacks on blockchain systems with a focus on the safety of signatures, but rarely we talk about the threat of something like quantum-miners, I mean a quantum processor that gets used as a miner device. with this point of view, when we NORMALLY follow our daily mining process and sometimes also find a negative-hash and write it in the block, an attacker needs to ENFORCE his processing-equipment to find a match to satisfy the network's difficulty in both regular and negative ways for a culprit reorg to pass that special block. that's how the idea could help better resistant against quantum attacks.