(Bloomberg) -- First came the judge’s rebuke. Then fresh Securities and Exchange Commission research surfaced purporting to allay doubts about whether trading in Bitcoin could ever be effectively monitored.Most Read from BloombergSEC Authorizes Bitcoin-Spot ETFs in Crypto’s BreakthroughAmazon’s Twitch to Cut 500 Employees, About 35% of StaffGoogle Lays Off Hundreds in Hardware, Voice Assistant TeamsSEC Says FBI Is Investigating Compromise of Agency’s X AccountBoeing CEO Fights Back Tears and Adm