According to online reports, Thumzup Media Corporation, a Nasdaq-listed company, announced that it will use Coinbase Prime as the custodian and main broker of Bitcoin. The company also disclosed that as of May 12, it held 19.106 bitcoins with a market value of approximately US$2 million. Previously, Thumzup has announced plans to increase the maximum total issuance amount to US$500 million to acquire more bitcoins.