Found 2 exchanges where Gitcoin is traded for BTC. According to the data on 6 August the most optimal price to exchange GTC for BTC is ₿0.0000013 for 1 Gitcoin. This rate is fixed at Upbit Indonesia at the maximum trading volume of the pair GTC/BTC - 2.1 BTC.
The maximum daily trading volume is observed in the GTC/USDT trading pair at LBank and reaches ₿ 27.73 (0.143% of the exchange's total trading volumes) at the price ₿ 0.0000013 per 1 GTC.
The minimum price to buy GTC for BTC is 0.0000013 - on the exchange Upbit Indonesia.
The maximum price to buy GTC/BTC is 0.0000013 - on the exchange Upbit.