Found 2 exchanges where Gitcoin is traded for BTC. According to the data on 29 August the most optimal price to exchange GTC for BTC is ₿0.0000011 for 1 Gitcoin. This rate is fixed at Upbit at the maximum trading volume of the pair GTC/BTC - 0.2 BTC.
The maximum daily trading volume is observed in the GTC/USDT trading pair at Phemex and reaches ₿ 3.38 (0.0322% of the exchange's total trading volumes) at the price ₿ 0.0000012 per 1 GTC.
The minimum price to buy GTC for BTC is 0.0000011 - on the exchange Upbit Indonesia.
The maximum price to buy GTC/BTC is 0.0000011 - on the exchange Upbit.