Is boss coin the same as bitcoin
unlike most currencies, bitcoin does not rely on specific currency institutions. It is generated by a large number of calculations based on specific algorithms. 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 currency 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. The monetary system used to have no more than 10.5 million in four years, after which the total number will be permanently limited to 21 million
bitcoin can be cashed and converted into the currency of most countries. Users can use bitcoin to buy some virtual items, such as clothes, hats and equipment in online games. As long as someone accepts it, they can also use bitcoin to buy real-life items.
moreover, the number of bitcoin is small, and it is too concentrated in the hands of several big players, which leads to its price instability. This is basically not money. Because as a general currency, an important prerequisite is price stability, otherwise the economic order will collapse.
the problem of double spending is that a sum of money can be spent twice, three times and many times. Why has the double flower problem become such an important issue in the bitcoin system
the reason is that bitcoin is a virtual currency. It is virtual, presented in the form of code, and can be copied. Once the code vulnerability is broken, the same bitcoin can be recycled. In this way, the "money" of bitcoin will become very weak
let's think about it. If a sum of money can be spent many times, and you have 500 yuan, you can buy a 500 yuan dress, which can be recycled, and then buy a pair of 500 yuan shoes. In this way, can money be called money
therefore, when Nakamoto set up the bitcoin system, all his technical means are basically around solving the "double flower problem" of
, to protect bitcoin as a kind of currency, its own function as a means of payment
in fact, the problem of double spending is not a problem in our present centralized world, because with banks, the settlement of money transactions is through banks, which is very safe. If you have problems, you can go to the bank directly
however, in the decentralized world, without such a central institution as banks, it is necessary to ensure that a sum of money can only be spent once. How to eliminate the "double spending problem" under the premise of decentralization is a difficult problem
let's just say, why is Nakamoto so persistent in pursuing "decentralization" and asking for trouble? No, he hopes to solve some social problems through decentralization, the most important of which is the inflation caused by the excessive issuance of money by the authority
so, let's sum up his logic: centralized currency issuance leads to inflation - so we need to achieve Decentralization - decentralization will face many problems, the biggest problem is the double flower problem - so we need to solve the double flower problem - how to solve the double flower problem
here, Nakamoto introces the concepts of utxo and "timestamp" to solve the double flower problem
. It's said that BTM batcoin has changed its name to btme now. No matter what it is called, it can't change the business of cheating investors. Now it's just cheating others to invest. This is a fake disk (a pyramid selling coin fraud project packaged with blockchain, which can charge phone charges and have business success. These things are for you to buy on Taobao. They can cheat you to invest money and connect with mainstream currencies, As long as you have money, it's better to go to the exchange and buy directly. It's no more than letting the little white who doesn't know to take over the plate. The currency has become a flood. It's bullshit to go to the trading platform. A fraudster plays with blockchain and virtual miner for pyramid selling. Your real gold and silver will soon be exchanged for a pile of useless numbers.) pyramid selling currency: in the guise of blockchain technology, the technology is far from the real blockchain principle; Not to solve, optimize or change a business pain point of traditional instry as the purpose; The token is not released through the smart contract of Ethereum, and there is no formal trading platform for digital currency, most of which are traded through the platform built by the project party; Promise to rise but not fall; When you pull your head in, it pays off< The suspect crowd financing unpunished by br / > about the BTM Bart currency fraud group, the mutual help disk and the crowd raising. Finally, the criminals played the block chain and the virtual mine pyramid sale. Now the fraudsters are still at large, and the public security organs are seeking the suspect of fraud to recover the losses of the injured netizens.
the so-called blockchain, the so-called virtual currency, there are several real, there are several real hash pH value and SSH encryption protocol! In addition to a few well-known old coins, other basic is not! That belongs to ICO Shanzhai coin? Counterfeit money! We should be cautious in investment! This year, fake blockchain, fake virtual currency, film and television dividends, football arbitrage, dividends, equity, mutual aid, points, fixed split, consumption all back, flying all over the world, everyone watch your pocket, don't let cheater disk bonus system, income to temptation! The packaging of many projects is very high and expensive. They are all paid to be packaged by others. The so-called videos are proced, the so-called white papers are also written by others, and the so-called open source code is also made by packaging companies. Now they are doing the so-called pioneering projects, and 99.99% of them are fraud projects! We are still not sober. At the end of the year, your pockets will be robbed by swindlers.
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bitelement was born in January 2014 and upgraded to the second generation bitelement in September 2014, with an initial total release of 200 million. The second generation bitelement has made great innovations in algorithm, function and security, especially in mining and trading under the mechanism of multi signature and short message verification, providing effective security protection for users' virtual currency assets, which may be the first in the world<
multi signature:
the new bitcoin wallet introces the multi signature mechanism of bitcoin and redefines a new storage method, so as to achieve a higher security level. This is the core content of this update wallet, which makes payment and mining very safe
under the multi signature mechanism, a bit element address has two private keys. To transfer money from this address, the two private keys need to be co signed before the transaction can be completed. There is a private key in the client's bitelement wallet, and the second private key is stored in the server of bitelement official website (or other trusteeship organization) (only the user's password can be decrypted and can be used only by SMS verification). The hacker must attack the two computers at the same time and obtain the password used by the user to decrypt the server's private key, so as to steal the user's virtual currency, The difficulty is greatly increased -
bitcoin (bitcoin: bitcoin) is a kind of network virtual currency, which can buy real-life goods. It is characterized by decentralization, anonymity, and can only be used in the digital world. It does not belong to any country or financial institution, and is not subject to geographical restrictions. It can be exchanged anywhere in the world. Therefore, it is used as a money laundering tool by some criminals< br />
Choose C. NIST cloud computing architecture reference model defines five roles: cloud service consumer, cloud service provider, cloud service agent, cloud computing auditor and cloud service carrier. Each role can be an indivial or an organization
cloud service consumers can rent cloud service procts from cloud service agents or cloud service providers, while cloud computing auditors must be able to obtain information from cloud service consumers, cloud service providers and cloud service agents in order to carry out audit work independently
extended materials:
NIST's definition of cloud computing is widely accepted by the instry, including three basic service modes of cloud computing (PAAS, SaaS, IAAs), four deployment modes (private cloud, community cloud, public cloud and hybrid cloud), and five basic features (on-demand self-service, extensive network access, resource pooling, rapid scaling, resource sharing, etc.) Service scalability)
NIST's concise definition of cloud computing is very helpful for the understanding of cloud computing technology and cloud services, and services and delivery constitute the core of cloud computing. As an extension of the definition of cloud computing, NIST released the cloud computing reference architecture in 2011, which is based on actor / role model and lists the core elements of cloud computing architecture