Galt, a long-time member of Bitcoin Talk forums, sold a rare Casascius physical coin for $10 million after holding it for 13 years.
The physical ingot contained real Bitcoin and was minted by Mike Caldwell in 2011, symbolizing the early days of cryptocurrency.
Despite offers to auction the coin in the past falling short of its full BTC value, Galt finally decided to redeem the Bitcoin in May after it crossed the $100,000 mark.
The Casascius coins and bars, discontinued in 2013, have become prized collector's items, with Galt's $500 initial investment turning into a life-changing windfall.