C 1.00000000 BTC = 100000000 sat

commodity BTC
    format 1.00000000 BTC

2023-03-03 * Opening balance
    Assets:Investments       1.00 BTC
    Equity:Opening balance

test bal
      1.00000000 BTC  Assets:Investments
     -1.00000000 BTC  Equity:Opening balance
--------------------
                   0
end test