Small cap bitcoin mining company Golden Bull Limited ([[DNJR]]) changes its name to Bit Digital and its ticker to "BTBT" prior to trading today.The board believes the new name more accurately reflects the company's current business.According to its 2019 earnings statement released on March 24, 2020, the China-based company shut down its peer-to-peer lending business and is started operations in the auto rental business and bitcoin mining.