Bitcoin is now up for 16 of the last 18 days, soaring over 50% in the last month and up almost 90% in 2017 - making its the year's best-performing currency.

There appears to be no specific catalyst for today's move as the surge in Japanese interest (as we detailed here) and news that Russia is considering, like Japan just did, to allow cryptocurrencies as a legal payment method are outweighing fears over 'hard forks', SEC rejections, and Chinese crackdowns.

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We summarized the ongoing bitcoin frenzy as follows last week: "just as the Chinese bubble frenzy in bitcoin is fading, it may be replaced with a new one, in which thousands of Mrs. Watanabe traders shift their attention away from the FX market and toward digital currencies" and added that "If the transition is seamless, there is no telling just how far this particular bubble can grow."

Five days later and $250 dollar higher, we are observing first hand how accurate this prediction may have been, although like last week, we have no way of telling how long this particular mania phase will last.