How much can two mining machines make a day
at present, the computing power of bitcoin in the whole network has reached 2.36 billion hash collisions per second, which is equivalent to the number of water droplets in more than 200000 50 meter long standard swimming pools. But even with such a large amount of computing power, it will take about 10 minutes to hit a hash value that meets the requirements
in 2012, bitcoin's output was halved for the first time, and in July 2016, bitcoin's output was halved for the second time. At present, 12.5 bitcoins are awarded for recording one page of account book. The next halving will take place around 2020, and the total number of bitcoins will not increase by 2040, with a total of 21 million. In other words, the difficulty of digging bitcoin is increasing, while the time required is increasing
It's about 37 yuan
let me first introce the reward mechanism of bitcoin system
bitcoin can basically dig out a block every 10 minutes through system settings. The reward for each block is given to the miners who dig out the block. The miner who digs out the block is called the block miner. The block miner will record the legal transactions in the bitcoin network to the blockchain, so that the miner can receive the service charge for bookkeeping
there are two parts in the reward for the block Miner: one part is the reward given by the system, which is called coinbase reward (also known as system issuance reward), the other part is the reward for bookkeeping, which is called miner's fee. The coinbase reward started with 50 bitcoins. For every integral multiple of 210000 blocks, the coinbase reward will be halved. This is what we often hear about bitcoin mining reward halved in four years
at the present stage, the reward of coinbase is 12.5 bitcoins. At the present stage, the average transaction miner fee received by miners for digging out a block is about 0.1 bitcoin (not fixed), that is to say, the average reward received by miners for digging out a block is about 12.6 bitcoin
about 99% of miners' rewards come from the system's coinbase rewards. According to the bitcoin system, one block can be g out every 10 minutes on average. The number of new blocks that can be g out in one day is 144 (60 * 24 / 10 = 144). At present, the number of bitcoins that can be g out every day is 1800btc (144 * 12.5btc = 1800btc). With the miner's fee of about 0.1btc per block, the total reward for all miners in one day is about 1814.4btc
BTC per day, which is about 100 yuan RMB. But judging from its current price, it is almost impossible to return the original price. Enter with caution. You can check with Babbitt when you have time.
In essence, blockchain is a decentralized distributed ledger database, which is a series of data blocks generated by using cryptography. Each data block contains the information of effective confirmation of multiple bitcoin network transactions
we know that blockchain is a decentralized system. Indeed, decentralization is a very important concept in the blockchain world. The design of many models (such as ledger maintenance, currency issuance, timestamp design, network maintenance, competition between nodes, etc.) depends on this central idea< br />
in the process, although you are trading with the seller, the transaction involves the third party, the Alipay, the seller and the seller. The transaction between you and the seller is centered around Alipay. Therefore, if the Alipay system has problems, it will lead to the failure of the transaction. And although you simply bought a mobile phone, you and the seller have to provide rendant information to the third party
so consider extreme cases. If Alipay run away or take money, do not admit your deal or the city where Alipay is driving away everyone, then you are tragedies.
the decentralized approach is much simpler. You just need to exchange money and mobile phones with the seller, and then both parties claim to have completed the transaction. It can be seen that in some specific cases, the decentralized processing method will be more convenient, and at the same time, there is no need to worry about the disclosure of their own information unrelated to the transaction. In fact, if only two people's transactions are considered, the benefits of decentralization can not be fully displayed. If there are thousands of transactions in progress, the decentralized processing method will save a lot of resources, make the whole transaction autonomous and simple, and eliminate the risk of being controlled by the centralized agent
decentralization is a subversive feature of blockchain technology. It does not need centralized agent and realizes a point-to-point direct interaction, which makes the information interaction mode of high efficiency, large scale and no centralized agent become a reality
Proceres:
the applicant should bring all the required information to the social security fund management center for handling. After verification, if the materials are complete and meet the conditions, he can do it immediately
required information:
1. A social insurance declaration form for employees in this city
2, the city's registered residence workers to provide one of the following information:
(1) "Notice of termination". p>
(2) introction letter of cadres to work in new units
(3) Zhuhai recruitment registration form (termination) signed by the labor department
3, the registered residence of rural residents and the foreign labor service in this city are suspended, and the labor management department has affixed the official seal on the "social worker insurance declaration form of XX city". p> (4) in case of cancellation, the original and of the cancellation certificate issued by the administrative department for Instry and Commerce shall be presented
5. If the original insured unit owes more than 6 months and the new working unit applies for the insurance, the application form of the new unit and the employment proceres issued by the labor department shall be provided, and the insurance suspension proceres of the original unit shall be handled at the same time
extended data:
according to the provisions of the Provisional Regulations on the collection and payment of social insurance premiums, the employing unit shall, within 30 days from the date of its establishment, apply for social insurance registration at the local social insurance agency with its business license or registration certificate. Social insurance agencies shall issue social insurance registration certificates after examination
if the registered items of social insurance of the employer are changed or terminated according to law, the employer shall go through the proceres of changing or canceling the social insurance registration in the social insurance agency within 30 days from the date of change or termination
the employer must report the amount of social insurance premium to the social insurance agency on a monthly basis, and pay the social insurance premium within the specified period after being examined and approved by the social insurance agency
there are strict conditions for the suspension of social security, and only the following situations can be handled:
1
2. The insurance can be stopped if the insurance is repeated and the labor relationship is terminated
3
4
I have been working in this company for one and a half years since May 2018, and I have been outputting works all the time. I seldom output some theoretical articles, so now I want to sort out my understanding of blockchain and how to do design after more than a year's work. There are also some preparations for those who are going to interview with blockchain companies.