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just do a little bit of research and you would know it. Show me a single link which says that Banks are using Ripple coin for enabling transactions across borders. Ripple founders own most of the coins and they have become billionaires. They will surely dump it at some time to raise money. Or even if they don't, it is a scam in itself as they are not coming out in open and telling everyone what it means to own the coin while it is getting speculated on.