Found 5 бирж where FIO Protocol is traded for BTC. According to the data on 28 September the most optimal price to exchange FIO for BTC is ₿0 for 1 FIO Protocol. This rate is fixed at Elastic Finance Token at the maximum trading volume of the pair FIO/BTC - 0.7 BTC.
The maximum daily trading volume is observed in the FIO/USDT trading pair at Elastic Finance Token and reaches ₿ 47.67 (1,400.46% of the exchange's total trading volumes) at the price ₿ 0 per 1 FIO.