<ul data-eligibleForWebStory="false">Ripple CTO shared a nostalgic post about mining 250 BTC in Bitcoin's early days.Schwartz bought a vintage Bitcoin miner T-shirt when Bitcoin was priced around $30 and reminisced about using BTC for purchases.Speculation about Schwartz's involvement in Bitcoin's creation persists, but he has consistently denied any ties to Satoshi Nakamoto.Schwartz later exchanged his mined BTC for XRP and Ethereum, criticizing Bitcoin's proof-of-work model for energy usage and scalability issues.