Are you sure about this? I reread the
Exchange Control Act, and it seems to authorize the Bank to do what it did. But
IANAL, so I may be wrong on this.
Foreign currency means legal tender in any country other than Thailand including foreign exchange;
Is Bitcoin legal tender in any country? As far as I know, the answer is no, so how does a law defining "Foreign currency" as "legal tender in any country other than Thailand" have anything to do with Bitcoin?