Zhejiang digital currency Village

1. Banknotes can still be circulated, not only with digital money, but also in our rural areas. Most of the old people still use paper money. Only when the young people go back to new year, will they go to WeChat Alipay.

2. The issue of bitcoin is determined by the block height, that is, the distance from the No. 0 block of Genesis. Now when the number is reached, the total amount of bitcoin should be limited. After this village, there will be no store. If the miners dig a block but don't receive the reward of the block, the bitcoin will be destroyed forever

coinbase transaction is a special transaction that generates bitcoin "out of thin air". Only miners can write this kind of transaction, and the number of generated bitcoin is limited by rules (new currency reced by half for every 210000 blocks + transaction fee for this block)

however, the rules do not stipulate that the miner must take away all the rewards that can be taken, and can choose not to take them

therefore, a mine pool connected with the RSK side chain has made a bug before, forgetting to take away the reward and occupying a pit in a block for nothing, which is equivalent to destroying the corresponding amount of bitcoin, making the total amount of bitcoin decrease a little bit permanently

in addition, to spend a bitcoin, you only need to specify the transaction ID and output serial number

as like as two peas in multiple blocks repeatedly write identical coinbase transactions, the transaction ID is also repeated.

therefore, this kind of situation also occupies the pit of a block in vain, and permanently destroys the corresponding amount of bitcoin

it seems to me that this is still a security vulnerability, so the new version of bitcoin software later banned the writing of repeated coinbase transactions. But until now, there has been no ban on miners not getting their e rewards

generally speaking, a coin is controlled by a private key. If a coin is transferred to an address where no one knows the private key, it will be destroyed

if the owner does a good job in security, and the private key is not disclosed and cannot be guessed, but he accidentally loses the private key, it is equivalent to destroying all the coins he owns

there are only some special circumstances that require intentional destruction of coins

one is irreversibly converted into another kind of currency, such as the contract currency XCP attached to bitcoin and wormhole cash WHC attached to BCH

the second is to save certificates and data on the chain, such as the time stamp: panbiao.com/2013/08 /

and the crowd funding of the original Ethereum founding team: zhuanlan.hu.com/p/29

the private key is essentially a big number. Whoever knows this number can control the currency on the corresponding address. So the private key must be generated with reliable random number, otherwise it may be guessed and stolen

compared with the token, the address is the hash of the public key. There is no way to judge whether an address has a corresponding public key and private key (even if the public key is known, the corresponding private key cannot be known). Therefore, even if it is explicitly the address of "burned" token, the system does not prohibit the transfer in

strictly speaking, what locks the currency is a small program (script). This program takes the input as the public key and digital signature. First, check whether the public key hash is consistent, and then check whether the digital signature is valid. If it is valid, it will be verified and transfer is allowed; Otherwise, it will be judged that the transaction is illegal and refuse to package into the chain

it is the whole node software that explains and executes this program. It can be said that the software code of the whole node specifically defines a coin

however, the current situation is very embarrassing. Most miners do not run the whole node, only a few mines are running. The vast majority of users do not run the whole node, even if they run the whole node, they can only perform verification, no computing power, no block.

3. The Enlightenment of "filial piety" -- to my mother, "filial piety" in Jinchi, class 2, grade 6, Zhengzhou No.6 Middle School -- what is filial piety, isn't it a word? What's the point“ No It is of great significance, not only a word, but also to carry forward the fine tradition of filial piety of the Chinese nation! The world is full of filial piety. It also has more profound social significance. For example, filial piety to our parents is a matter for each of us. We should start from childhood and start bit by bit, so as not to leave a lifetime of regret. In addition, filial piety to the elderly is an obligation for all of us, otherwise we will break the law and regret for life. So, let's not do things that we regret, filial piety, from now on! When it comes to filial piety, it's a long-term thing. Because first of all, you should be patient and not be afraid of nagging. Then you should communicate with your parents more so that they don't have to worry about you any more. It's easy to say, but it's a permanent thing to do. My mother is very busy at work. When she is tired for ten years, I cook for her and then eat for myself. Although she is very tired, I can't give me financial and spiritual help, but I can't think of this and not filial to her. Because I've grown up, it's time to pay back. Now the only way to be filial to her is to study hard. In return for her hard work. Here I want to say: "Mom, you've worked hard! Looking back on the past few years, I've done a lot of things I'm sorry for her. I hope she can forgive my unfilial son. From now on, I will treat you well. Can not be like before, I believe you will slowly feel the son grew up! Only with filial piety can people have a sense of responsibility, mission and kindness. Filial piety makes people mature and grow up. I think without filial piety to my mother, how can people love this city and the country that raised us. The filial piety of loving mother is "small filial piety", and the filial piety of loving motherland is "big filial piety". I am willing to be a son with "big filial piety"“ The meaning of filial piety is too profound!

4. impossible! All aspects of the connection and impact on the national economy. It won't be so hasty! To put it bluntly, maybe the country will.