India’s investigators have made a major breakthrough in one of the earliest and largest Bitcoin fraud cases. Authorities arrested Ayush Varshney, an entrepreneur accused of helping build the infamous GainBitcoin scheme that allegedly stole about $800 million from investors worldwide. The arrest comes almost a decade after the scam began spreading during the early cryptocurrency boom. Investigators from the Central Bureau of Investigation (CBI) detained Varshney at Mumbai airport while he was reportedly attempting to leave the country for Sri Lanka