For the past eight weeks, Titus Williams, a US real estate developer, has had something of a singular focus: tracking down a missing $1.8 million of Bitcoin that he claims was stolen from him in a midnight raid. The process has not been straightforward. To recover his funds, Williams, the president of Prosperity Partners, a Missouri-based property firm, must first find out who stole it from him. And his hunt for that name has led him to Ireland and the Irish courts. This week, Williams issued a High Court case against Coinbase Europe Limited, an Irish entity that was only…