Found 1 exchange where ZKsync is traded for BTC. According to the data on 31 August the most optimal price to exchange ZK for BTC is ₿0.00000011 for 1 ZKsync. This rate is fixed at Upbit at the maximum trading volume of the pair ZK/BTC - 0 BTC.
The maximum daily trading volume is observed in the ZK/KRW trading pair at Upbit and reaches ₿ 115.66 (1.33% of the exchange's total trading volumes) at the price ₿ 0.00000012 per 1 ZK.
The minimum price to buy ZK for BTC is 0.00000011 - on the exchange Upbit.
The maximum price to buy ZK/BTC is 0.00000011 - on the exchange Upbit.
Warning: some ZK markets show an abnormally wide spread — those quotes may be unreliable (thin liquidity or off-market trades). Cross-check the volume against several venues.