Crypto’s Open Secret: Its Multibillion-Dollar Volume Is Suspect (Bloomberg via Yahoo Finance) Nearly two months ago, we wrote about BitForex, the Singapore-based exchange with suspicious trade volumes and a horrible logo. Bloomberg has finally caught up to Modern Consensus and they have some more details about it. Why would BitForex do it? “Transaction mining, also known as trade mining, is a controversial practice. On BitForex, users earn the equivalent of $1.20 in digital tokens issued by the exchange for every $1 they pay in transaction fees. It’s a system that critics say is tailor-made to encourage wash trading — in which a trader, or a team of traders, buy and…