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Is Bitcoin security under threat?

The security of the algorithm that allows computers to mine Bitcoin has contributed hugely to the currency's success. When Bitcoin was first announced, there were significant fears that any crack in the algorithm could make it easy to mine Bitcoin much more quickly than had been anticipated, leading to a rapid collapse in the value of the cryptocurrency. That hasn't happened to date, but a new report in the MIT Technology Review suggests that the rise of quantum computing could change all of that. Are they right? Or is this the latest Bitcoin scare that will lead to nothing? When...

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Google results show more people searching for Bitcoin than gold

In what is sure to be a welcome move for Bitcoin and the whole cryptocurrency sector, internet giants Google have reported that Bitcoin is now a more widely searched term than gold. Reports issued via Bloomberg show that the search term 'buy Bitcoin' was more popular than 'buy Gold' when Google analysed its recent data. Bad news for Gold Once seen as the premier safe haven currency, this latest news is not great for gold. Already under increasing pressure as a result of the flow of money into cryptocurrencies like Bitcoin, it will not be wanting more news to come...

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Bitcoin price sees $1,000 spread as '2x' crisis averted

As confirmation came through that a contentious software proposal had been discarded, Bitcoin set an all-time high of $7,879, before dropping to $7,070. The general consensus among analysts is that this $800 high to low range was due to traders attempting to price in this intricate news. A syndicate of businesses and miners are no longer seeking to overhaul the blockchain mechanism or create a new cryptocurrency from its ashes. An unexpected shock was seen in the charts by market observers, showcasing something not seen since September as China's regulatory body moved to shutter its crypto exchanges and ban ICOs....

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The Bitcoin bogeyman: what is a 51% attack?

Of all the possible weaknesses and attacks, there's one that sits on the throne - the 51% attack. People have routinely speculated of the fear of an end-of-days situation for Bitcoin, but this time they could be right. Transactions could be stopped from confirming, and some transactions could even be reversed by attackers who hold over 50% of hashing power, potentially undermining the whole project. The economic incentives and design of Bitcoin were specifically structured to defend it from the potential of a destructive 51% attack. So far this has been successful. But until now, a 51% attack was merely...

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What if Bitcoin is really something else?

Cryptocurrencies are a new phenomenon, still emerging on to the markets and into our minds. Our understanding of them is not complete, and opinion as a result remains split. Traditional moneymen such as Jamie Dimon denounce Bitcoin and its fellows as a fraud, a Ponzi scheme - as if the conventional financial world was ever innocent of that label. But what if Bitcoin has a value not just as a competing currency but as something else altogether? What if cryptocurrencies represent, in fact, an entirely new asset class? What does this mean? If you are beginning to feel we are...

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