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Kind of.... Nimiq is supported only on EtherDelta, on EtherDelta you can create multiple accounts with your name, so basically you can transfer coins from one specific account to another without having to use the general exchange.... Price manipulation is quite simple in this case.... Basically what I think happened is this: One or Two guy decided to increase the price and exchange those guys between them. When that happen Coinmarketcap is not taking the proper value because for example there was only one transaction with that value, but instead it takes the average :)