Two problems of handling Bitcoin and many other cryptocurrencies

The problem of actually handling Bitcoin is that each transaction takes approximately 10 minutes.

There are other cryptocurrencies which take less time to transact.

However, the other critical problem of all these cryptocurrencies is the security of securing their account.

As it is the electronic form as well as it is operated in the cyber connection, it is critically prone to the cyber hacking.

The improvement by means of these two problems (Loading time for transaction and security for holding an account) is still demanded in order to disseminate a cryptocurrency furthermore.