Found 3 exchanges where Cronos is traded for BTC. According to the data on 7 August the most optimal price to exchange CRO for BTC is ₿0.00000083 for 1 Cronos. This rate is fixed at Crypto.com at the maximum trading volume of the pair CRO/BTC - 0.6 BTC.
The maximum daily trading volume is observed in the CRO/USDT trading pair at Fameex and reaches ₿ 12.65 (0.127% of the exchange's total trading volumes) at the price ₿ 0.00000083 per 1 CRO.
The minimum price to buy CRO for BTC is 0.00000083 - on the exchange CoinEx.
The maximum price to buy CRO/BTC is 0.00000084 - on the exchange Byte Exchange.