According to reports by Wu, a collector claiming to be John Galt successfully redeemed a rare Casascius physical bitcoin bar on the Bitcoin Talk forum, cashing out 100 BTC, currently worth over 10 million dollars.
This coin was purchased in 2012 for $500, with an investment return of approximately 2,000,000%. Casascius physical coins were issued by Mike Caldwell in 2011, embedded with real Bitcoin private keys, and were discontinued in 2013 due to U.S. regulatory reasons.
Data shows that over 10,000 Casascius physical coins have been redeemed, with more than 18,000 still unused.
