Golden Finance reported that according to data disclosed by HODL15 Capital, the mysterious address "Mr.100" is working hard to hoard Bitcoin and has purchased almost all newly mined Bitcoins in the past three days, including: 1. Purchased 800 BTC on April 15. ; 2. Purchased 600 BTC on April 16th; 3. Purchased 400 BTC on April 17th (so far).