According to on-chain analyst Ember Monitoring, ByBit and FTX exchanged platform coins in early November 2021: ByBit exchanged 100 million BIT for FTX 3.36 million FTT, and both parties promised not to sell it within 3 years. There are now 2 months to 3 years left, and a sell-off is likely after the end of the sell-off. At that time it was equivalent exchange, but now the difference in value is very large: 100 million BIT is worth $57.73M; 3.36 million FTT is worth only $4.47M. BitDAO (BIT) has been upgraded to Mantle (MNT).