Odaily Planet Daily News: Nasdaq-listed company Thumzup Media Corporation announced that it will use Coinbase Prime as its Bitcoin custodian and main broker. The company also disclosed that as of May 12, it holds 19.106 Bitcoins, valued at approximately 2 million dollars. Previously, Thumzup had announced plans to increase the maximum total issuance amount to 500 million dollars to acquire more Bitcoins. (Prnewswire)