Crypto asset manager sees bitcoin mining shift from China to North America

LONDON (Reuters) - The world's biggest cryptocurrency asset manager said on Tuesday it was seeing efforts to shift bitcoin production to North America from China, which dominates digital coin mining.Barry Silbert, founder of New York-based Grayscale Investments, made the observation in an online presentation to investors, without saying why the shift was occurring.Many mainstream investors such as pension funds or asset managers have been reluctant to embrace bitcoin, concerned at its..