Bitcoin traders have a reason to watch Tuesday’s BOJ rate decision. Yen shorts are at a nine-year high

A large build-up of speculative short positions in the yen raises the risk of a sharp short squeeze if the BOJ signals more aggressive tightening, potentially unwinding yen-funded carry trades that support risk assets.Read MoreCoinDesk: Bitcoin, Ethereum, Crypto News and Price Data[#item_full_content]