Paypal (payment processor) and bitcoin (digital currency) who will stay longer on internet?
Also welcome to time travellers for answer.
NOTE:we focus on online payment system which will widely use by ecommerce websites.
Maybe I did not really look into the matter, but for me, the examples relate to different payment systems, and they can not be used interchangeably. If you bitcoin existed as the only currency in the world, then really only bitcoin, but as for now it is not.