Virtual currency that is always hacked
in the current situation, blockchain is not a mature technology. What the market values is the so-called prospect, and it will take time to improve and excavate it slowly. However, the collapse of virtual currency is just a return to its own value
in short, I think bitcoin will continue to grow slowly after falling below a certain price. The current slump is just that the funds attracted by the previous heat have discovered the characteristics of virtual currency (hacker attack, dealer trading, these two situations will probably only appear in the newly issued currency, which is determined by the characteristics of blockchain, in other words, Hackers may also attack bitcoin in the early stage, but the more people and nodes bitcoin enters, the lower the probability of this situation, and the more difficult it is to generate)
in addition, I think that a large number of people in China even don't know what bitcoin is, so they are ready to make a fortune with money.
since then, the network and shell electronics have announced the stop of bitcoin payment. Recently, the central bank interviewed the third party payment agencies. Alipay and Fu Tong pass closed the virtual currency trading window such as bitcoin, resulting in a further fall in bitcoin prices.
it is also reported that the cooperation between banks and bitcoin trading platform is not supported by the regulatory authorities, which basically turns off the possibility of recharge and withdrawal on bitcoin platform, that is, blocking the mutual exchange between domestic bitcoin and RMB
bitcoin trading platforms such as "bitcoin China" and okcoin also resumed to charge 0.3% transaction fees, and increased the withdrawal fees to 1%. Some analysts believe that this is to prevent a large number of investors from cashing out
all kinds of signs show that bitcoin is getting worse and worse in China. However, the conclusion of bitcoin's exit from China may be overstated
first, bitcoin can be freely traded as a commodity
although the central bank does not recognize the legal tender status of bitcoin, it does not deny the legitimacy of bitcoin as a commodity and does not prohibit investment, trading and purchase of bitcoin. Ordinary people have the freedom to participate at their own risk
Second, the bitcoin trade has not collapsed yet
a bitcoin player said that the current transaction price of bitcoin is not low enough to lead to the collapse of the trade. The price of bitcoin is still higher than the cost price of bitcoin, that is, the price of mining< Third, the transaction channel is not blocked
although some third-party payments have stopped supporting bitcoin transactions, and banks are not optimistic, bitcoin trading platform can also use other third-party payment interfaces, or use foreign payment interfaces to pay. Some bitcoin trading platforms are considering transferring their servers abroad
the above-mentioned bitcoin player said that he once withdrew cash from his personal account to remit money to him. In other words, bitcoin transaction may bypass the third-party payment
at the same time, cash transaction is also a possible way of transaction< Four, the biggest risk of bitcoin trading is not regulation
the biggest risk of bitcoin trading is not government regulation, but security risks
bitcoin is at risk of being stolen by hackers. If there is a large-scale loss of bitcoin, it will directly affect the fairness of market transactions, which is a real "bottom-up"
however, at present, the security risks of bitcoin have not been fully exposed
the overall risk has increased
it must be admitted that the government's increased supervision has further increased the risk of bitcoin trading
moreover, the transaction threshold is obviously higher than before
in essence, as a means of investment, the risk of bitcoin is self-evident. If there is no final person to take over the offer, even if bitcoin is in short supply, it lacks real value and only has limited online use value. If you can't find the last recipient, bitcoin will probably disappear like a bubble.
Bitcoin is safe, has a large rising space, circulates globally and is easy to preserve
01, bitcoin is relatively safe< p>
this actually happened in Foxconn's overseas factories. The hackers broke into their systems and stole their unencrypted files. Then the hackers locked the files with their own passwords
the contents of these files are more important to Foxconn, and then Foxconn is required to exchange 1804 bitcoins for password keys, which is about 35 million US dollars according to the current market value. If you pay attention to this aspect of news, you may find that now hackers extort bitcoins instead of US dollars, euro and RMB
and bitcoin is relatively easy to save, just need to save to their own virtual account, bitcoin has another advantage, that is, it does not exist counterfeit money
1. Complete decentralization, without issuing institutions, it is impossible to manipulate the number of issues. Its distribution and circulation are realized through open-source P2P algorithm
2. Anonymity, tax exemption and supervision free
3. Robustness. Bitcoin is completely dependent on P2P network and has no distribution center, so it cannot be shut down externally. Bitcoin price may fluctuate and collapse, and many governments may declare it illegal, but bitcoin and its huge P2P network will not disappear
4. Borderless and cross-border. Cross border remittance will go through layers of exchange control agencies, and the transaction records will be recorded by many parties. But if you trade with bitcoin, enter the digital address directly, click the mouse and wait for the P2P network to confirm the transaction, a lot of money will pass. It does not go through any regulatory agencies and will not leave any cross-border transaction records
5. It is difficult for the cat to survive. Because bitcoin algorithm is completely open source, anyone can download the source code, modify some parameters, recompile, and create a new P2P currency. But these counterfeit currencies are fragile and vulnerable to 51% attacks. Any indivial or organization, as long as it controls 51% of the computing power of a P2P currency network, can manipulate transactions and currency value at will, which will be a devastating blow to P2P currency. Many Shanzhai coins die in this link. The bitcoin network is robust enough. If you want to control 51% of the computing power of the bitcoin network, the number of CPUs / GPUs required will be astronomical.
at present, the vast majority of digital currency transactions are concted in exchanges. Among the numerous exchanges, bitfinex, binance, okex and so on are well-known
However, bitcoin and other digital currencies, as decentralized assets, have to be traded in a centralized exchange, which seems to have hidden contradictions and dangers1. Problems and challenges of stock exchanges=“ //www.yuanxue365.com/en/img_fd039245d688d43fdf16c83b761ed21b0ff43bbf ">
in February 2014, Mt. GOx, the world's largest bitcoin exchange at that time, was stolen 850000 bitcoins, and the price of bitcoin suffered a" cliff "crash on that day. Later, it was revealed that Mt. GOx was in fact a thief, and only 7000 bitcoins were actually stolen
in August 2016, bitfinex, the largest U.S. dollar bitcoin trading platform, suffered a security vulnerability, resulting in the theft of 120000 bitcoins, which was worth $65 million at that time. If converted into the price in December 2017, it would be worth nearly $2 billion
on December 19, 2017, South Korea's youbit exchange was attacked by hackers and lost 4000 bitcoins, and the exchange declared bankruptcy
on December 21, 2017, the Ukrainian liqui exchange was stolen 60000 bitcoins, and the unit price of bitcoin plummeted by US $2000
in 2018, such a drama will only continue
in addition to the threat of hackers, traditional exchanges also have some inherent shortcomings, such as lack of supervision and inefficiency. The security of the exchange for investors can only rely on its own credit, and the cost of running is very low. The stock exchange is regulated at the national level, but there is no such sword of Damocles on the top of the digital currency exchange. Moreover, in an exchange, the same order can only be submitted to one exchange. After the user places an order, the funds used for the transaction will be frozen and can only wait for the completion or cancellation of the transaction. These are undoubtedly inefficient
All in all, the problems of exchanges are the problems of centralization2. Decentralization of exchanges=“ //www.yuanxue365.com/en/img_86d6277f9e2f070889a173c9e224b899a801f257 ">
(1) the progress of the exchange itself
the upgrade of security means is various. At present, the best use is cold wallet, that is, to keep the digital currency in the offline U disk. At the end of 2017, when the YouTube exchange was attacked, 75% of its assets were withdrawn into the cold purse in time to avoid greater losses. However, it seems to be a helpless way to protect the online assets by offline means. Of course, there should be many other methods, which will not be repeated here
(2) the representative of cross ledger transaction is ripple network, and the operating company is ripple labs, which is a semi centralized system. Ripple is a decentralized clearing agreement. In order to solve the high cost and delay of inter-bank clearing, its base currency is XRP. Ripple network can connect all kinds of assets, such as US dollar, RMB, Japanese yen, bitcoin, etc. to its own network. In this system, U.S. dollars or bitcoin can be converted into reborn currency, and then reborn currency can circulate freely in the network, just as a highway is built between various assets. Due to the support of major banking institutions, the reborn currency achieved nearly 300 times growth in 2017
(3) decentralized exchange
some teams try to use blockchain technology to build a decentralized exchange. This kind of decentralized exchange, to some extent, is an extension of cross ledger trading
bitshares is the most representative of early rising projects. It builds a blockchain development platform with servers scattered all over the world. Even if some of them are attacked, the system will not collapse. Anyone can transfer money and borrow money freely on this platform, and can also quickly build a centralized exchange based on this platform. In order to ensure stable value, bitstocks also require three times of digital assets as collateral. At present, bitstocks are running fairly well
later, with the development of Ethereum and smart contract, the x x protocol came into being. This is an open protocol running in the Ethereum blockchain and a decentralized exchange in the Ethereum ecosystem. The agreement has attracted many investors. At present, it has completed financing and started to build open source software tools and infrastructure. Of course, there are many competitors. Ether Delta, IDEX and oasis DEX are trying to provide similar functions. Moreover, it is a smart contract system based on Ethereum, which only supports erc20 token. If other smart contract public chains start to rise, the demand will be reced
in addition, there are some teams that are entering, such as the domestic road seal agreement, looping (LRC) in English. They adopted a design similar to the X protocol, and also introced a fast payment function similar to the lightning network. It is characterized by trying to match multiple exchanges, the user's order can be broadcast to multiple exchanges, and completed by different exchanges. Moreover, the user can still use the account funds after placing an order, and the user's behavior of transferring part or all of the funds is equivalent to partial or total cancellation. To some extent, it improves the breadth and timeliness of the transaction. However, this system seems to have damaged the "power" of the existing exchanges. Whether we can persuade everyone to play together will be a difficult problem
At present, there is still a long way to go for the construction of decentralized exchange. In 3-5 years, traditional exchange will still be the main battlefield of digital currency However, in the future, it is worth looking forward to let the decentralized digital currency get rid of the shackles of centralizationThere are several reasons as follows:
1. Foxconn was blackmailed by hackers for 1804 bitcoins. Foxconn's response is not a big problem< p> According to media reports, Foxconn was attacked by hackers who asked for 1804 bitcoins. For a while, everyone wanted to know what Foxconn would do, so Foxconn said, "it's not a big problem, it's being dealt with "
in a word, according to the above analysis, the advantage of bitcoin to hackers is that they only need bitcoin< otherwise, if you take other money, you will have to spend your life
1. A stolen bitcoin can't be retrieved, and if it's lost, it's lost.
2. Bitcoin has transaction records, but the address is hidden, and you can't find an indivial.
3. Every bitcoin has a key, and only if you have this key can you be admitted to own bitcoin. However, if bitcoin is stolen or lost, your bitcoin will disappear completely
therefore, the theft of bitcoin does not belong to cracking, it may be e to internal personnel.
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when transplanting Osmanthus fragrans, the mud head should not be scattered, and the seedlings should be planted within one day. After planting, the seedlings should be drenched in time, at least twice a day. Water should be inserted for the first time, that is, the roots should be filled with mud, pruned properly, new buds can be grown to prove survival, and fertilizer can be applied after one month, so that they can blossom in the same year
invest in virtual currency and select the currencies that can be traded on multiple trading platforms, such as Ruitai, bitcoin, Weimeng and Laite. In this way, the relative safety factor is much higher.