Start time of bitcoin main network
It was officially born on January 3, 2009
since 2015, the future of bitcoin has become more and more uncertain. On the one hand, bitcoin fell as much as 55.55% against RMB last year; In 2015, bitcoin fell by more than 30% against the RMB in the first half of January alone
bitcoin's "falling" reflects the "self-healing" of its value after "fanaticism" to a certain extent. According to statistics, in 2013, bitcoin rose from 1 ∶ 13.59 to 1 ∶ 731, with an annual increase of 5300%. This speculative driven inflation has affected the virtual currency property on which bitcoin relies
on the one hand, no country has defined it as a legal currency. On the other hand, in 2014, the US dollar rose significantly, and the prices of oil and bulk commodities fell correspondingly. The price trend of bitcoin is the same as that of the latter, becoming part of the asset allocation of some speculators, which highlights that its asset attribute is far greater than the monetary attribute
extended data
Security and credit risk have also become the reasons for the decline of investor confidence. Mt. GOx, once the world's largest bitcoin exchange, claimed in March last year that it had lost all its assets e to hacker attacks. Recently, it was revealed that its lost bitcoin was probably e to internal system manipulation
the regulatory environment of bitcoin is not optimistic, and Russia, Thailand and other countries have begun to implement strict control on it. In addition, the global stock market performed well last year, resulting in the diversion of bitcoin investment funds, and the crazy "mining" activities also rapidly increased the supply of bitcoin, which may lead to a trend of oversupply in the short term, leading to a sharp drop in the price of bitcoin
the concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system. Unlike all currencies, bitcoin does not rely on a specific currency institution to issue. It is generated by a large number of calculations based on a specific algorithm. Bitcoin economy uses a distributed database composed of many nodes in the whole P2P network to confirm and record all transactions, and uses cryptography design to ensure the security of all aspects of money circulation. The decentralized nature and algorithm of P2P can ensure that it is impossible to artificially manipulate the value of bitcoin through mass proction. The design based on cryptography can make bitcoin only be transferred or paid by the real owner. This also ensures the anonymity of money ownership and circulation transactions. The biggest difference between bitcoin and other virtual currencies is that the total amount of bitcoin is very limited and it has a strong scarcity
warm tips:
1. The above explanations are for reference only, without any suggestions
2. Before investing, it is recommended that you first understand the risks existing in the project, and clearly understand the investors, investment institutions, chain activity and other information of the project, rather than blindly investing or mistakenly entering the capital market. Investment is risky, so we should be cautious when entering the market
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isn't this idea for fear that the world will not be in chaos? No, no, it's a cruel reality. If we look back at the birth of bitcoin, we will find that the root cause of bitcoin is that the US subprime mortgage crisis has spread to the whole world, resulting in the disorder of the world's economic system, and various countries have issued money printing policies, giving birth to bitcoin, such a "devil of the world". The inventor Nakamoto told economists all over the world, In fact, you can still play like this
bitcoin actually allows people to return to a credit controllable system, but it's too far ahead of time and leads to too big a step. Therefore, from the current point of view, bitcoin is more similar to gold and other safe haven assets. This kind of image is just a superficial likeness. Bitcoin has many scientific and technological advantages in its essence, but it can't play e to many restrictions for the time being. Therefore, if bitcoin wants to rise rapidly, it still depends on the "instability" of the economic system
this kind of thing has happened before. The Bank of Cyprus incident once pushed bitcoin soaring. Now, if there is another "second in Cyprus", I believe bitcoin will have a chance
is this a dream? No, the financial system at this stage has exposed various kinds of crisis. Russia's economy seems to be collapsing because of the fall of crude oil price, a lot of local debts in China can't be paid off, the government is playing hard to cut interest rates and reserve requirements, and the European debt crisis is getting worse and worse... Today's society is in the information age and the Internet age, If the spark can't be fixed, light the powder keg
the possibility of a rapid outbreak of economic crisis still exists, but no one can say for sure. Who knows whether the world will be transformed into a fast lane for a long time and will not be sick again? Marx said that economic crisis will appear periodically in capitalist society, but when will the next big outbreak take place
maybe in more than ten years, maybe in the next second, heaven or hell, there is no way to check.
bitcoin network generates new bitcoin through "mining". In essence, the so-called "mining" is to use computers to solve a complex mathematical problem to ensure the consistency of bitcoin network distributed accounting system.
balance block chain
block chain is a publicly shared transaction record that the whole bitcoin network relies on. All confirmed transactions are included in the block chain without exception. In this way, it will be confirmed that the bitcoin to be spent in the new transaction belongs to the consumer. The integrity and timing of block chain are guaranteed by encryption algorithm
transaction - private key
a transaction is a value exchange between bitcoin addresses that will be included in the block chain. Bitcoin wallet holds a secret data called private key for each bitcoin address. The private key is used to sign the transaction and provide mathematical proof that the bitcoin in the transaction really comes from the owner of the bitcoin address. This signature also avoids the possibility of being modified after the transaction. Transactions spread among users and were confirmed by the bitcoin network in the next few minutes through a process called mining
processing mining
mining is a distributed consensus system that includes the transaction data to be confirmed into the block chain to complete the confirmation of these transactions. By mining, the data in the block chain can be stored in chronological order, the neutrality of bitcoin network can be maintained, and different computers on the bitcoin network are allowed to agree on the system state. To be confirmed, a transaction must be packaged into a block that complies with very strict encryption rules and verified through the bitcoin network. These rules can prevent the modification of existing blocks, because once there is a change, all blocks will be invalid. Mining is as difficult as winning the lottery. No one can easily and continuously add new blocks to the block chain. Therefore, no one can control what content is contained in the block chain or replace part of the content in the block chain to achieve the purpose of rolling back their costs.
1) new transactions broadcast to the whole network
2) each node brings the received transaction information into a block
3) each node tries to find a workload proof with enough difficulty in its own block
4) when a node finds a workload proof, it broadcasts to the whole network
5) if and only if all the transactions contained in the block are valid and have not existed before, other nodes agree with the validity of the block
6) other nodes indicate that they accept the block, and the method of indicating acceptance is to follow the end of the block, create a new block to extend the chain, and regard the random hash value of the accepted block as the random hash value that is faster than the new block
hope to help you.