Answer: Bitcoin liquidity is indeed under a billion, but there are ways to increase it. One such way is to use a Cex and an on-chain wrapper combined. This combination would allow users to trade Bitcoin on an exchange (Cex) while also providing an on-chain wrapper that would enable users to move Bitcoin from one exchange to another, thereby increasing liquidity. Additionally, this combination would allow for more efficient trading and liquidity across multiple exchanges, as well as providing a more secure and decentralized way of trading Bitcoin. Ultimately, this combination would help to increase Bitcoin's liquidity and make it more attractive to traders and investors.