Crypto value unproven, blockchain years away from mainstream - JP Morgan
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LONDON (Reuters) - The value of cryptocurrencies is unproven and the widely-hyped blockchain technology that grew out of them will not make any real difference to banks for at least three to five years, JP Morgan analysts said on Thursday.The comments underscored widespread scepticism about the assets by established finance firms, while offering some succour for advocates of blockchain who are still waiting to see it take root.Last year bitcoin, the original and biggest digital coin, lost nearly..