International payments would be simplified with the adoption of Cryptocurrency such as Bitcoin.
Similar to Foreign Exchange markets, Bitcoin is also a 24/7 market.
Advantages
In Low Earth Orbits, or distances involving Interstellar travel, Cryptocurrencies would be more preferred if FTL travel or transfers could be adopted. Currently, there would be a delay using Cryptocurrencies for as simple as 20 transactions as outlined below.
Disadvantages
With the current amount of Bitcoin amount mined, BTC requires FTL communication possible via QE for transaction processing.