Coinspeaker Bitfinex Launches Tether (USDT)-Settled Perpetual Contracts to Track Europe 50 and German 30Bitfinex will provide perpetual contracts to traders 24 hours a day seven days a week, unlike equity exchanges that are open for business five days a week.Bitfinex Launches Tether (USDT)-Settled Perpetual Contracts to Track Europe 50 and German 30