The problem with Ripple’s XRP digital currency is that people buy and sell it but don’t use it that often.

The firm seeks to pounce on the opportunity created by growing demand for custom-designed ASICs.

Cryptocurrency mining is a power-hungry process with a negative impact on the environment.

Valued at $10 billion at the start of 2017, cryptocurrency market grew sharply by 1,500% in just eight months.