Bitcoin is the world's first 'decentralized currency with no issuer'.
As it is distributed, it is a currency that is not subject to external influences and is not managed. In particular, if the state is unstable and the trust in time currency is low, there is a possibility that the currency will become paper waste someday. In addition, the legal tender currency of that country exists in the form of bank deposit and point issued by companies other than cash. If banks and businesses collapse, those money will be lost.
In the case of bit coins, it is not controlled by businesses or banks, so there is no risk of bankruptcy, and it will be a revolutionary next-generation currency that can remit worldwide among individuals as it is .