“Digital Currency” Recently, Digital Currency is proceeding, but limited to wallets for purchase. To proceed more, digital currency must be applied to assets classes. Then, paper and coins currency can be invalid. If digital currency is applied to assets and used in smartphones, various types of Bonds and Securities are possible. Digital Currency is associated with Personal Information, and it causes fear and intrust to own government for some people. This problem can be solved by fear to lose money. If paper and coins are invalid, people must use digital currency. To proceed Digital Currency, deleting trust for Bitcoin is good way. Bitcoin is used for dark money, and not in control by trustable organizations. Digital Currency by government can compete Bitcoin if the government is trustable. In addition, Bitcoin has several deep security risk by hackers. Roll back is impossible when hackers steal Bitcoin.
2021/11/29. SDGs:Sleeping, Diet and Green Tea Recently, Corona virus is spreading again. How to stop it? There may be various ways. USA and EU peoples seems to think that vaccination is the best solution. I know it was better way. Virus may have 2 main functions, toxicity and diffusive. Those 2 functions have trade-off relationship, if toxicity is stronger, diffusive is weaker, and vice versa. We (Asia people including Japanese) have another solution. Improving own health. In current stage which Corona virus evolves to have stronger diffusive, Asian solution is effective, because toxicity is weaker and good health body can overcomes to Corona virus. I want to introduce how to improve own heath, SDGs, Sleeping, Diet and Green Tea. Good and long sleeping, keeping suitable body weight and drinking green teas make your body better. Furthermore, I want to recommend +2S, Stretch and Supplements. My weight is heavier than normal people’s, so I try to lose my weight!