Bitkub, founded by Jirayut “Topp” Srupsrisopa, is Thailand’s largest group of blockchain and digital asset companies. In 2021, Siam Commercial Bank acquired a 51 percent stake in the company for an estimated US$536 million, turning it into Thailand’s third unicorn just three years after Topp founded it. He previously founded Coins.co.th, the country’s largest bitcoin wallet company.