The first weekend of December has been and gone, so Christmas must be just around the corner. But the blockchain doesn’t care about Christmas, it keeps on going no matter what. Which means, there’s some catching up to do. Here are Hard Fork’s top cryptocurrency and blockchain news picks from the last weekend. 1. At the latest G20 summit in Buenos Aires, world politicians discussed a global cryptocurrency business tax. It’s currently illegal for a country to tax a business that doesn’t have a physical presence there, so it almost makes sense. If the tax does materialize, it’s a while…

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