Win 50,000 yen worth of Bitcoin with the photo contest too! — August 25, 2022 — Tokyo, Japan GINKAN Inc., the managing company of the token economy based social restaurant review service where diners can earn cryptocurrency SynchroLife, has announced a “20% Bitcoin Cashback Fair” with the cryptocurrency exchange CoinTrade run by Mercury Inc. and Tokyu Plaza Shibuya. From September 1, 2022…