Still unsolved. The private key for this puzzle is an integer between 2^139 and 2^140 − 1, and whoever finds it can sweep 14.00001600 BTC from 1QKBaU6WAeycb3DbKbLBkX7vJiaS8r42Xo.
The creator published this puzzle’s public key in 2019, which turns the search into a bounded discrete logarithm. Pollard’s kangaroo solves a 140-bit interval in about 2^70 group operations, far fewer than the 2^138 key tests a blind search would need. JeanLucPons’ CUDA Kangaroo is the standard tool; puzzles #130 and #135 were cracked this way by large GPU pools.
Try cracking #140 in your browser How solvers really attack it