Found 2 exchanges where ZKsync is traded for BTC. According to the data on 17 July the most optimal price to exchange ZK for BTC is ₿0.00000015 for 1 ZKsync. This rate is fixed at WhiteBIT at the maximum trading volume of the pair ZK/BTC - 1.4 BTC.
The maximum daily trading volume is observed in the ZK/USDT trading pair at Binance and reaches ₿ 22.18 (0.0214% of the exchange's total trading volumes) at the price ₿ 0.00000015 per 1 ZK.
The minimum price to buy ZK for BTC is 0.00000015 - on the exchange Upbit.
The maximum price to buy ZK/BTC is 0.00000015 - on the exchange WhiteBIT.
Внимание: у части рынков ZK аномально широкий спред — такие котировки могут быть ненадёжными (низкая ликвидность или нерыночные сделки). Сверяйтесь с объёмом и несколькими площадками.