Bitcoin blockchain qcoin

1. What is the double flower problem

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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

2. Compared with most of them, they are not reliable. Even if they are reliable, they can't make a lot of money. Thank you very much_ ∩)O

3. It needs to be forged and enchanted
in forging, you can choose to forge Demon Armor and spirit armor (no matter which branch is forged, Dragon Armor will be forged in the end). When skill points are added, as long as there are enough materials, these high armor can be forged
to forge a good equipment, you need to enchant it, as long as you have soul stone and enchant skills
help with forging: an old man in the backyard of the comrades in arms group can help with forging as long as he is given money. Or melt the equipment you don't need to make iron blocks for forging

Enchantment: you can learn the corresponding enchantment methods and improve the enchantment ability after resolving magic weapons.

4.

Q-coin has Tencent endorsement and can not be used for transactions other than Tencent services, while bitcoin is a virtual currency with limited quantity and can not be copied without endorsement

the following is a brief introction to bitcoin

bitcoin is a virtual currency based on blockchain

blockchain is the technical foundation of bitcoin, so don't be confused by the concept of blockchain

blockchain ≠ virtual currency ≠ bitcoin

extension of bitcoin

there are many websites in China that are making blockchain procts. I will define them as pan bitcoin for the time being

for example, Netease's Netease planet, Xiaomi's rabbit, etc.

in fact, these are just self styled blockchain virtual currencies. Because China's law forbids the trading of virtual currencies, the purpose of these procts in the form of blockchain skin is actually marketing, which is just a gimmick. Of course, there are also some fraud companies with blockchain signboards

blockchain is just a kind of technology, not a kind of profiteering investment proct

currency extension

analysis on the development of currency value of bitcoin

gold and silver standard currency

paper money represents the gold and silver contained in it, which can be exchanged for the gold and silver marked on the paper money

credit currency

the value given by the state or organization is the currency, US dollar, RMB and so on in today's society

bitcoin meets the rarity

the total amount of bitcoin should be fixed, with a total amount of 21 million. The algorithm is as follows

when bitcoin was born in 2009, each reward was 50 bitcoins. Ten minutes after its birth, the first 50 bitcoins were generated, and the total amount of money at this time is 50. Then bitcoin grew at a rate of about 50 every 10 minutes. When the total amount reaches 10.5 million (50% of 21 million), the bounty will be halved to 25. When the total amount reaches 15.75 million (5.25 million new output, or 50% of 1050), the bounty will be halved to 12.5

bitcoin can be creative

first of all, the architecture of bitcoin is blockchain technology, so as long as we master this technology, we can create alicoin, Netease coin, etc., unlike gold and silver, we can't proce them

bitcoin can not be developed into credit currency

credit currency is based on the country or organization, and creditors must receive credit currency

therefore, bitcoin is completely established on the receiving side, and its value depends entirely on the number of people who recognize whether it is valuable. The more people think it is valuable, it will increase in value. On the contrary, if no one thinks it is valuable, it will be worthless

5.

Since Xiaolu entered the circle, people often ask Xiaolu what is the difference between q-coin and bitcoin. Emmm, although the answer to this question is very simple, it's a bit troublesome to explain it. So Xiaolu should write an article today to explain it well

I don't know what fawn said. Do you understand? If you have any questions, please leave a message and communicate with Xiaolu