Ether, the digital coin linked to the Ethereum blockchain, hit an all-time high of $3,456.57 as the cryptocurrency extends a rally that has seen its price gain over 350% this year. The digital coin pared some of those gains in Tuesday morning trade in London and was trading at $3,369.74 at 11:20 a.m., according to CoinDesk data. Interest in cryptocurrencies has surged over the past year with bitcoin continuously pushing new record highs. A number of factors including rising institutional interest and major companies such as Tesla buying the digital coin have been credited with its rise. Bitcoin has been described as ... (full story)