Few days ago a friend asked me this questions. But i cannot understanding that how to i give him answer. At last i said him that, bitcoin is an online currency. Only this currency used in online marketplaces. It is not possible to use it in offline marketplace like offline currency.
But what is your best answer of this question?
Bitcoin and other cryptocurrencies are only created for online payment or transaction and there is no way you can use it offline. Cryptocurrency is digital currency that is associated with the internet which uses cryptography and this encryption techniques can only possible through digital means. Government will not also willing to accept to mint any currency, especially virtual currencies, that are decentralized or they can not control. The only way you can use bitcoin for offline is to convert it to fiat first through exchanges or P2P approach.