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Today's blockchain and cryptocurrency news Bitcoin is down 1% at $10,280 Ethereum is down 2% at $363 and XRP is down 2% at 24 cents Top gainers in the last 24 hours: Loopring up 20% and Storj up 15% Jack Dorsey’s Square has launched the Cryptocurrency Open Patent Alliance (COPA) Christine Lagarde, and the European Central Bank will make an announcement soon about a Eurozone digital currency. XanPool raises $4.3 million in pre-series A funding. A South Australian research paper makes the case that blockchain should be refined to better protect privacy.