Bitcoin transaction efficiency

1. bitcoin did make a lot of money last year, but in March this year, it was in a downturn. The world's largest bitcoin trading platform, Mentougou, had 800000 stolen coins and was forced to file for bankruptcy protection. It's not illegal for your mother to go to the bank to withdraw money and then directly use cash to buy bitcoin. But does your mother understand bitcoin? Did your mother get bitcoin? If your mother didn't get bitcoin, or sold it to your mother at a much higher price than bitcoin at that time, it must be a scam. Bitcoin is generally traded on the trading platform, and private transactions are generally concted by people in the circle or those who know bitcoin very well
it's been a long time. How do you prove that it's a fraud and how to collect the evidence are all problems.

2. Ah, the transaction logic of bitcoin is generally based on a principle of a blockchain, and then as we say, it is a buy and buy out of content

3. It is often said that you can send bitcoin to any corner of the earth for free. Generally, you can transfer bitcoin for free, but in some cases, you have to pay transaction fees to complete the transfer. In version 0.8.3 bitcoin wallet, the default is 0.0001 bitcoin transfer fees. This service charge is awarded to miners to encourage them to continue mining and provide enough computing power for bitcoin to ensure the security of bitcoin network. At present, the main income of miners is to get 25btc reward by creating new blocks, but this reward is halved every four years. As time goes on, bitcoin transaction fee reward will graally replace the reward for creating new blocks. Under what circumstances do you need to pay the handling charge? How much does bitcoin charge? What is the handling charge? Bitcoin system has a series of network rules, including fee rules, which are "what the client should do". When you use bitcoin client (wallet, bitcoin QT) to send bitcoin, the whole process is roughly divided into the following steps:
1. Prepare the bitcoin you want to send. The client is responsible for collecting the balance of bitcoin in your wallet (bitcoin QT) to prepare for payment, because every bitcoin you receive is stored in your wallet until you spend it. If you receive two payments from 3btc and 2btc, their records in the wallet are independent of each other, that is, a 3btc and a 2btc, rather than merging them into 5btc (the wallet only records transaction details and does not merge the balance, but you can see the total balance on the interface of the wallet). As time goes on, many bitcoins of different amounts will accumulate in your wallet, So when you send bitcoin, the wallet has to decide which bitcoin is the most suitable for this sending. The bitcoin you get in a transaction is called "inputs" and the bitcoin you spend is called "outputs". There are multiple inputs and outputs in your wallet
2. If your outputs are less than 0.01btc (including the fund changes inside your wallet), you have to pay a handling charge of 0.0001, even if you transfer it to yourself. The wallet has an established rule when preparing your payment amount, that is, when preparing the payment amount in many inputs, try to avoid the amount change less than 0.01btc (for example, if you want to pay 5.005btc, the wallet should choose 3 + 2.005 or 1 + 1 + 3.005 instead of 5 + 0.005)
3. The larger the amount, the higher the age, and the higher the priority. If the amount you send is too small or your bitcoin has just been mined, then your transfer is no longer free. Each transaction will be assigned a priority, which is determined by the degree of currency, the number of bytes and the number of transactions. Specifically, for each input, the client will first multiply the number of bitcoins by the time they exist in the block (currency age, age), and then divide all the procts by the size of the transaction (in bytes). The calculation formula is: priority = sum (input)_ value_ in_ base_ units * input_ age)/size_ in_ If the calculation result is less than 0.576, then the transaction must pay the handling fee. If you do have a large amount of small input and want to transfer it out for free, you can add a large amount of bitcoin with a large age, which will increase the average priority, so that you can transfer out bitcoin for free
4. Charge per kilobyte. At the end of the transfer, the client will detect the size of the transfer (in bytes). The size generally depends on the amount of input and output. The calculation formula is as follows: 148 * input amount + 34 * output amount + 10. If the size of the transfer exceeds 10000 bytes, but the priority meets the free standard, you can still enjoy the free transfer, Otherwise, there will be a handling charge. The cost of 1000 bytes is 0.0001btc by default, but you can also add it in the client. Open the tab "settings & gt; Options & gt; The main purpose is to adjust the handling charge. If the service charge you are setting is less than 0.0001, BTC is calculated as 0.0001.

4.

As we approach the end of the year, when we plan to sprint for the goal of the end of the year, earn more bonus and prepare to release ourselves in the Spring Festival, don't forget that the fraudsters also have such a plan. At this time, the tide of shopping on double 12 and new year's day comes one after another, and people working outside are also busy booking tickets and air tickets for the Spring Festival, which provides opportunities for fraudsters. Here, liewang, the first online fraud information reporting platform linked by the police and the people in China, makes an inventory of the new trends of online fraud in 2017. Can you see through all these scams

trend 1: mobile payment has become the mainstream, beware of two-dimensional code trap

mobile payment has greatly facilitated people's life and made people travel easily. However, there are many criminals who use the way of scanning two-dimensional code to carry out fraud, which is impossible to prevent. For example, on bike sharing, a fake QR code is used to cover the regular QR code, and the avatar is set as the official icon of bike sharing to cheat users to pay or recharge; Next to the store's two-dimensional code, there are words full of temptation, such as "scan code to grab red packets", "scan code discount", etc., to lure users to scan the code, and then obtain user information or directly guide users to transfer money. There are even criminals who the illegal parking notice posted on the car by traffic police. The fake ticket is attached with a payment QR code to lure the car owner to scan the code to pay a "fine"

trend 2: fake businesses want to refund. Users should be careful of being" loaned online "

generally, people think that their bank card balance is small, even if they encounter swindlers, it doesn't matter. However, according to the report cases received by liewang platform, In the common refund fraud in 2017, fraudsters use mobile phones to receive SMS verification code to lure victims into Internet micro loan business, and finally transfer the loan to the swindler's account. This kind of fraud often involves a high amount of money and brings serious property losses to users

trend 3: mobile phones also contain extortion virus, and the payment method is more" people-friendly "

mobile phone extortion software has become a common tool for criminals to seek benefits e to its low proction cost and fast cash flow. At present, there are different forms of blackmail software in the mobile application market. Different from the blackmail software in the computer, bitcoin is needed to pay for it. The payment form in the mobile blackmail software is more "people-friendly"

a batch of blackmail software captured in 2017 attached wechat two-dimensional code information to the blackmail interface, and prompted the winner to directly scan the two-dimensional code for payment by wechat, which will automatically unlock after successful payment, and the user will automatically enter the transfer interface after scanning the code. However, through technical analysis, this kind of blackmail software does not have any code related to wechat transfer. The so-called "scan payment, automatically unlock" is actually a fraud, even if the user transfers, it will not automatically unlock

trend 4: fake customer service requests to provide payment code and swipe only by numbers

because code scanning payment is simple and convenient, in 2016, many fraudsters took a screenshot of the two-dimensional code to swipe. But in 2017, as payment companies added anti fraud tips or confidentiality settings in the process of payment QR code screenshots, swindlers immediately thought of countermeasures and swindled the numbers under the payment code, forming a new instrial chain

criminals often disguise themselves as merchants customer service, requiring users to provide figures such as Alipay, WeChat and other payment bar codes, and then, on the grounds of digital failure, require users to refresh the numbers and send them several times to achieve the purpose of stealing. p>

trend 5: download the specified software, but the account password is shared by cloud disk

users' privacy information can be stolen without using phishing websites and Trojan horse software. This year, swindlers have come up with new tricks: as long as the victims' trust is obtained, they can download cloud disk, synchronization software and other procts, log in to the account designated by the swindler to upload files and synchronize, and then they can easily get information. What's more, if the user synchronizes the SMS verification code at any time, the swindler can easily steal the funds in the bank card

fraudsters often disguise themselves as e-commerce, suppliers and other customer services, requiring users to download some cloud disk synchronization software, and then provide the specified account password for users to log in. At this time, if the user logs in and synchronizes the personal account, password and other information on the software according to the swindler's instructions, the funds on the account will be transferred quietly

trend 6: new phishing websites on mobile terminals are more covert and easy to be recruited

as security manufacturers increase their efforts to crack down on phishing websites, phishing website makers also strengthen their covert means, spread links by using proct sharing functions such as short URL, cloud disk service, browser and social tools, and finally jump through the URL, Guide users to phishing sites to launch online fraud

trend 7: indemnity should be paid in intimate way. Be careful with this kind of fraud SMS

as early as 2013, 360 company discovered a high-risk fraud binding the victim's online banking account. In recent years, with the use of mobile payment becoming more and more popular, In 2017, there was a similar kind of fraud, which used a payment platform to bind accounts and swipe victims' accounts

in May 2017, Mr. Di received a flight delay text message sent in the name of the airline, with flight information and customer service phone number attached in the text message, and said that Mr. Di could get 300 yuan of delay compensation. Fake customer service in the phone to guide Mr. Di refund operation, and provide the enterprise account, but also ask Mr. Di to open intimate payment function. However, after Mr. Di opened, he found that he had two dections, and realized that Mr. Di was cheated and immediately called the police

trend 8: investment in the circle of friends? Do not gambler psychology

in everyone's wechat group or circle of friends, there are often many activities or proct recommendations under the banner of discount. Not long ago, Mr. Wang saw a WeChat official account named "double half price win" in WeChat group chat. Mr. Wang then identified the official account as having an enterprise certification and believed that the platform had high credibility. p>

Mr. Wang invested a small amount in the early stage, and found that there was a certain income every day, so he subsequently invested in batches, but graally began to lose money“ He wants to invest more in order to earn back the capital. As a result, when contacting customer service again, he found that the other party had blackmailed him. Only then did he realize that he had been cheated and that the money he had invested had gone to nothing

trend 9: identity impersonation has a new pattern, be careful that "friends" are high imitations

in the past, online fraud of identity impersonation often occurred on QQ, wechat and other social platforms, but this year, swindlers shifted their focus to microblog. The swindler specially studies the social habits of the victims, such as the relationship between microblog staff and chat content, and then changes their avatars and nicknames to create high imitation numbers. Because most of the fake users are abroad, it is difficult for their microblog friends to distinguish the true from the false in time

trend 10: the combination of various means makes it impossible to prevent the" ghost "fraud.

in March 2017, 360 assisted the Shenzhen police in successfully cracking down the" midnight ghost "Telecom fraud Gang, which the police identified as an illegal trade instry chain relying on personal information, It is a high-tech, high intelligence, cross platform, remote-control new type of telecom network fraud crime that combines mobile cloud service, operator's deputy number service and Internet financial service. And this kind of stealing brush mainly uses different services of various platform service providers. A single service does not have the security risk of stealing brush, but it is combined to form stealing brush. In order to make it difficult for the victims to detect, the criminals choose to commit crimes late at night. The whole process does not need to have any contact with the victims, and the victims do not need to reply to any SMS, so prevention is very difficult

from the above ten cases, the current situation of network fraud is still not optimistic. The anti fraud experts of liewang platform hereby remind the netizens that the new year is approaching, the fraudsters are highly active, and all kinds of fraud means emerge in endlessly. At this time, we need to improve the anti fraud awareness, so that the fraudsters have no chance to take advantage of it

net hunting platform is jointly launched by Beijing Public Security Bureau and 360. It is an innovative platform to crack down on Internet fraud through Internet platform and Internet technology. Up to now, liewang platform has established contact with public security organs in more than 300 regions of the country, helped to detect more than 100 major Internet fraud cases, involving 170 million yuan, and knocked down more than 10 large-scale fraud gangs with strict organization and clear division of labor. Internet users can report malicious programs, malicious web addresses, fraulent phone calls, etc. to 360 Internet security center through the platform. Every piece of information reported by Internet users will be included in the big data of liewang platform, providing effective clues for the police to solve cases

5. How to make anonymous wechat payment? Just scan the code, wechat payment.

6. On okex, the transaction speed is very fast. The transaction can be completed in a few minutes, and it can be traded anytime and anywhere.

7. Things are rare. Bitcoin was invented by Nakamoto Tsung in 2009. It is an electronic currency generated by blockchain technology. The design of this technology enables bitcoin to proce only 21 million pieces in theory, which is scarce in quantity. Then some people will ask why bitcoin was not expensive in the past, and why it has gone up in value. The reason is that people's needs are not met. Bitcoin is different from traditional currency. It has no value in itself and is more like a large-scale social practice. At first, e to the small number, it has no use at all. As time goes on, most of bitcoin has been g out, and people graally realize the convenience brought by blockchain technology. This special technology enables bitcoin to break the restrictions on the international circulation of funds, and the transactions can not be traced. This gives those black market businessmen who engage in illegal transactions hope that the demand increases greatly. In order to complete the large amount of unidentified property transactions, the limited number of bitcoin has become inevitable. There is also a lot of money speculation among the people. These investment projects imported from abroad attract a large number of investors to follow up with high risks and high returns, and virtually accelerate the appreciation of virtual currencies such as bitcoin. This reminds me of the listing process of the company. Bitcoin, as the original stock, has been basically issued. After it has been hoarded and snapped up by a large number of people, such as the IPO of the company, the original stock soared, causing a large number of onlookers eager to try. The ultimate beneficiary is undoubtedly the original first bitcoin holder, and the confidentiality of bitcoin makes the identity of these people an unsolved mystery.

8. Players may not know the location, let's take a look at the full resource acquisition strategy<

metal
distortion is an excellent iron diagram. First of all, a few iron ores are distributed on the edge of the cliff. If the Jialong property is OK, you can get 1000 or 2000 pieces of metal by sliding around the door, which is very suitable for early development
then there is distortion, which should be the easiest way to get a large amount of metal. In the blue area, all the stones are metal (at least where we make iron). The distorted artifact crab can be used to push the ore easily. Long press of the left or right button of the crab can catch the Jialong. The Jialong rider can attack one point, and the crab is responsible for finding the direction. When the crab presses for a long time, it will have a relatively large range of judgment. For example, after hitting 10000 or 20000 iron ore, the crab can no longer lift the Jialong, so it can put the Jialong down in place, and then walk forward for a short distance. If the crab presses for a long time again, it can still judge that it has caught the Jialong. At this time, the Jialong is moved forward for a small distance, In this way, the position of pushing iron can be adjusted for a short distance regardless of the load. When you need to move for a long distance, you can directly use the C key to throw out the Jialong. Throwing also ignores the load. The Jialong can fly very far
the above method is learned from the video, and we made a little adjustment according to the actual situation. First, the crab we caught is of high grade. After full loading, there is 6K, which can hold 2W iron at one time. Secondly, we push the iron from the waterfall in front of our home. After the second waterfall, there is a relatively open river beach (46.9 / 53.7). We put a Tektronix transmitter in the center of the open space, and then only push the iron near here. Every time we hit 2W, we upload it to the terminal, and then download it from the Tektronix transmitter at home. We may have adjusted the refresh speed. Just this distance in the view of the river bank is enough for us to push the iron forever. It took us less than 1 hour to hit 12 W metal
in order to be safe, we used three people to push the mine, one to operate the Jialong, one to operate the crab, and one to drive the Spinosaurus. But Jialong must be all plus attack, fight is also very fierce, two people probably can operate
gas
there is a gas mine in front of our house. With a gas collector, it's easy to save tens of thousands of gas balls. Later, our server didn't turn off, and gas never lacked. In addition, according to our observation, the rability of the gas collector will drop, but we use it for a month, and then it will drop dozens, and we don't know what it is

9. Bitcoin is a global popular voucher (encrypted internet currency), but it is not recognized as a currency in China. In fact, no country will recognize bitcoin as a currency that can pay taxes, which is the original intention of the country to issue currency, that is, the reason why banknotes can become legal tender
in the final analysis, bitcoin is just a voucher recognized by some businesses.

10. Bitcoin has been in a stagnant period of time recently, sometimes with a small floating up or down. Today, there has been a small decline, and now it has fallen below 2900 yuan. All day long, the market is not good recently. After the world cup, bitcoin has been in a negative decline. Some people say that this is e to the lending and leverage of the trading platform. They require the trading platform to publish 100% margin. However, after the trading platform publishes 100% margin, bitcoin's market is still in the cold winter stage

at present, bitcoin mining is basically close to the cost price. The average income from mining is only about 15%. The era of mining violence has come to an end

however, mining is still profitable, otherwise no one will go to mine. At present, 28nm mining machines are mainly used in the market. Four generations of Avalon have come out.