Wang Chun, co-founder of F2Pool, has become the first known Bitcoin hodler to travel to space, joining a four-person crew that launched aboard SpaceX’s Fram2 mission on Monday night.

An early Bitcoin miner who began mining in 2011, Wang is known for co-founding F2Pool and StakeFish, as well as the habit of meticulously documenting his travel logs. He noted that the Fram2 flight marked his 1,000th trip, continuing his tradition of sequentially logging every journey.