A developer has introduced a CUDA-powered tool that may recover 8,999 Bitcoin (BTC) lost in 2010 by a user known as "Stone Man." This dormant fortune, now valued at approximately $688 million, has remained untouched for nearly 16 years. The recovery, if successful, would be one of the largest reclaimed Bitcoin holdings ever recorded. The tool exploits weak entropy in early Bitcoin client keys, using GPU hardware to accelerate the search process. This method could potentially unlock other lost wallets, as an estimated 4 million BTC are stranded due to similar issues. The Stone Man case, documented on bitcointalk.org, highlights the challenges of early Bitcoin key management and the potential for modern technology to reverse past losses.