El Salvador made bitcoin a legal tender, Singapore has not made bitcoin a legal tender, the second country that makes bitcoin a legal tender is Central African Republic.
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Exactly! Bitcoin being a legal tender in a country is a different story compared to other regulations from some countries, Singapore is the best example by OP.
El Salvador's current situation on Bitcoin is superb compared to other countries even as you say crypto-friendly country. So, if Singapore will start using Bitcoin as an "official" legal tender, that's the time I can consider Singapore followed El Salvador.