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August going to be a huge month in bitcoin history. Bitcoin, the largest cryptocurrency on the internet, is currently at a crossroads. Before August 1, the powerful users who “mine” the currency with souped-up PCs will have to choose whether or not to apply BIP 91, a set of software code to the bitcoin’s bedrock, known as the blockchain — a chronological public ledger that documents every transaction of the digital currency. While the miners currently seem to be in favor of the update, the controversial decision on how to update the cryptocurrency’s technology has driven a rift between several groups of users, leading many to speculate that at some point, the technology will “fork.” But  the concept of a fork  is complicated, and involves everything from the specific technology applied to bitcoin to the foundational philosophy behind the cryptocurrency. Here are five things you need to know about a possible bitcoin fork. 1. What is a bitcoin fork? In financial terms, a for...

Image caption"Accepting cryptocurrencies broadens my client-base," says Eleesa Dadiani Why is the art world getting excited about digital currency Bitcoin and its underlying technology blockchain? Eleesa Dadiani owns and runs an art gallery in London's famous Cork Street. She was born in Georgia in the Caucasus and was "breastfed by gypsies". But she is also a passionate believer in the power of Bitcoin and other digital currencies. When we meet she is busy preparing for an exhibition of sculptures made from the exhausts of former Formula 1 racing cars. One of these strange rib-cage-like creations made from the super-strong alloy inconel has been gold-plated and will sell for about £35,000. "These are pieces of history," she tells me. In a first for the tradition-bound art world of Cork Street, her international clientele will have the opportunity to pay using Bitcoin, the digital cryptocurrency underpinned by blockchain technology. The galle...