BTC addresses use Base58 (like Base64 but without the need of equivalent character: IOl0+/) and will have to begin with possibly 1, 3, bc1q or bc1p based on which kind of address it is actually. Unique apps may perhaps fluctuate or use different language, but they ought to get you https://trongenerator10741.angelinsblog.com/28869138/the-random-trx-address-diaries