On the picture of digital currency

1.

The digital currency wallet is the hardware wallet, which means that the private key of digital assets is stored in a single chip, isolated from the Internet, plug and play. Hardware wallet can't guarantee 100% security. For example, if a geek gets your hardware wallet and doesn't know your private key, it may be cracked by violence. It's just one of the safest storage methods compared to other storage methods

many block chain entrepreneurs at home and abroad are optimistic about the development of this field, so they begin to build more hardware wallets. In the case of the exchange being stolen a lot of money and the software wallet being stolen from time to time, many investors regard the hardware wallet as the last moat

extended information:

whether the hardware wallet is safe

the hardware wallet can not guarantee 100% security. For example, if a geek obtains your hardware wallet, it may be cracked violently even if it doesn't know your hardware wallet immediately. It's just one of the safest storage methods compared to other storage methods

of course, there are exceptions, such as you have unlimited brain power and never forget. It's better to save it anywhere than in your own mind

2. The news has refuted the rumor
the central bank has not issued any digital currency, nor has it developed any app

3. There must be. It's about UBI. It's very impressive. The domain name is very powerful. It only has four letters.

4. Cointiger is a global digital currency trading platform, which supports mainstream currency and non mainstream currency transactions such as bitcoin, ethereal currency and Leyte currency, as well as legal currency transactions
it does support legal currency trading. Unlike usdt on other trading platforms, cointiger's legal currency is bitcny, which is a ratio of 1:1 to RMB. It fundamentally reces the entry threshold for novices, which can be as low as a few hundred yuan, but usdt is different. The entry threshold is thousands of yuan. It was from coin tiger that I entered the team of currency speculation.

5. Pole tiger chicken Insect
pole 0，0 1，-1 0，0 - 1,1
tiger - 1，1 0，0 1，-1 0, 0
chicken 0，0 - 1，1 0，0 1, - 1
insect 1，-1 0，0 - 1，1 0, 0
there is no pure strategic Nash equilibrium
suppose that the probabilities of a pole, tiger, chicken and insect are P1, P2, P3 and P4 respectively. Then, in the four cases of opponent's pole, tiger, chicken and insect, a's income should be equal, otherwise the opponent will change the probability of these four to rece a's total income. The formula can be listed as follows:
P1 + P2 + P3 + P4 = 1
0.p1 + (- 1) · P2 + 0.p3 + 1.p4 = 1.p1 + 0.p2 + (- 1) · P3 + 0.p4 = 0.p1 + 1.p2 + 0.p3 + (- 1) · P4 = (- 1) · P1 + 0.p2 + 1.p3 + 0.p4
the solution is: P1 = P3, P2 = P4, P1 + P2 = P3 + P4 = 1 / 2
generally speaking, for example, after playing 100 times, the total number of times of playing pole and tiger is the same as that of playing chicken and insect, which is 50 times. Moreover, the number of times of playing pole is equal to that of playing chicken, and the number of times of playing tiger is equal to that of playing insect
for reference only, ha ha.

6. No matter how powerful the wisdom in the world is, there is no Buddha's wisdom

7. just so so.. I used to be a supplier there, and my performance was not very good. Last year, I still lost money
but the instry is good. Government support