BTC lectures

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I believe many people have this idea, but in reality, there is no pie in the sky. It's more about getting rich by being down-to-earth. However, there are always exceptions. For example, some people buy lottery tickets or make investments, and the profits are hundreds of times. Today's teacher who was once thought to be a fool is just like this, He was ridiculed for buying 100000 bitcoins at the time. The generation of bitcoin only depends on a specific algorithm, which can be generated after a large number of calculations. Because the total quantity is limited, the extremely scarce bitcoin naturally becomes a direction of investment. After all, the rarity of things is the most expensive

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Do you know Li Xiaolai? His lectures are very interesting and many students like to listen to them. Li Xiaolai, a humorous teacher in class, has gained a lot of "fans". However, Li Xiaolai is not only an ordinary teacher, he is also a businessman with business sense. Ten years ago, bitcoin was unknown, and he thought it was a new trick to cheat people. However, with a pair of wise eyes, Li Xiaolai bought 100000 bitcoins. Now bitcoin has increased by 1300 times. How much money can he sell now? Let's take a look at this article today

Li Xiaolai is the person who has really walked into bitcoin. When someone asked him about bitcoin in his live broadcast, Li Xiaolai just laughed, he was relieved, and described the unknown ugly side of bitcoin. Bitcoin is a scam, which makes Li Xiaolai suffer a big loss. Fortunately, he can jump out of this "pit" and explain the scam of bitcoin to others. This is the bottom line of life. Maybe Li Xiaolai doesn't want to see other opportunists fall into the bitcoin scam like himself. He is still a rich man, and he can get away from bitcoin. If he is an ordinary family, I'm afraid he won't be able to survive in this pit. We need to be on guard for some projects that seem to be very profitable, and remember that there is no pie in the sky

4. Before Wen Yuan, the character was Han Ze, all pseudonyms! Before they cheated us to buy mythical currency, now the dog cheated us to buy bitcoin on their own fake platform. The data on the platform will be delayed compared with the external disk. In this way, they can control long or short. If they ask you to reverse it, you will be closed, and you will not know how to die! These are all pig plates (three months of harvesting victims, the first month has given lectures for Mingbo's favor, the second month deliberately said that stocks are not easy to do, how good digital currency bitcoin is, and then told you that their own fake digital currency has prospects, deliberately took out their own fake account to cheat people in, the third month after harvesting, the swindler lost contact, and the swindler retreated completely), We have been cheated in the case of 10 people arrested, but this fake article is far from continuing to be a shooter, cheating! Now, there is a group called "competing for the best" and an organization called "JingWuMen". They have a clear division of labor among cheaters (lecturing, entrusting, collecting money, opening an account, assistant, etc.) and really ignore the national law! Now Wenyuan has an account holder named Liu Qian, Zhang Jia (pseudonym) and others. I suggest you buy ukgr digital currency! Lower case (ukgr) don't buy it. The platforms are all made by themselves. You can control the rise and fall at any time. If it's not a real platform, you can close the platform at any time! It's the same as the myth coin recommended by Han Ze (the same person in Wenyuan) before. It's all fake! At present, we have lost hundreds of millions! The whole country has also set up an ad hoc group to solve this case. I hope that more people who have been cheated can read this article, so that this group of swindlers can be less successful! Finally! The most important word! Ask the local police before investing, because they will explain to you that this is a fraud! It's a fraud!

5. Some people pretend to be the customer service of Dongfang fortune, or a Chunsheng named Yang. They give lectures and make bitcoin index. Don't be fooled. They are all liars. They say that the trading platform server is in foreign countries and can make money, but you can't cash out how much money you earn, because they are operating my trading platform. They will transfer all the money you earn and your principal, It's no use calling the police, because their trading platform doesn't belong to China, and Chinese police don't care.

6. If the account is set to automatically transfer the balance to yu'ebao, the balance will be cleared the next day. You can see if yu'ebao has it.

7. Domestic trading platform only three exchanges are the most secure, the rest have problems
three major exchanges: okex, fire currency and coin security.

8. The address will be checked, so the wrong address cannot be sent. Sending to the address where the private key is lost can be successful. That's just another form of bitcoin suicide!

9. If you find that in the network teaching, the teacher is not your own teacher, then you can contact your head teacher in time.

10. The importance of private key security is self-evident compared with special coin players. For bitcoin heavyweight players or bitcoin merchants, how to protect the private key needs careful consideration and repeated consideration. Today, the editor will discuss with you how to protect the private key of bitcoin. For bitcoin QT clients, the bitcoin private key is generally stored in the client's wallet.dat file. For online wallet users such as blockchain, the private key of bitcoin is stored on the network server of online wallet, and users can also download the private key locally. For users of paper wallets, the private key can be printed. However, how to protect the security of the private key? The editor lists several methods for your reference
keep the private key with symmetric encryption. Symmetric key algorithm means that both encryption and decryption use one key. The encryption methods we usually use are symmetric encryption, such as WinRAR encryption, bitcoin QT encryption of the private key file is also using the symmetric encryption algorithm. The commonly used symmetric encryption algorithms are AES, DES, RC4, RC5 and so on. Symmetric encryption requires users to set relatively complex keys to prevent brute force cracking. Go to top method 1 uses bitcoin QT to encrypt the private key wallet. In the command mode, we can use the encryptwallet command to encrypt the wallet. For the usage of command mode, please refer to the basic teaching of bitcoin: how to use the private key of paper wallet. This is the most simple and effective method of private key encryption. However, when the walletpassphrase command is used to decrypt the wallet, the key will be read into the computer memory, so it is possible for the attacker to obtain the key. Encryption command: encrypt wallet yourpassword decrypt wallet command: walletpassword yourpasswordtimeout change password command: walletpassword exchange oldpasswordnewpasswordgo to top method 2, use AES encryption provided by blockchain. Blockchain provides users with private key file encryption service based on AES algorithm. Users can download the encrypted file and save it properly
go to top method 3 uses TrueCrypt, a third-party software, to encrypt the key file, which is also recommended by the editor. TrueCrypt is open source and free, with high software maturity, and supports two factor authentication and whole hard disk encryption. In addition, FBI personnel have suffered losses on TrueCrypt, so they have a good reputation. The FBI has admitted defeat in attempts to break the open source encryption used to secure hard drives seized by Brazilian police ring a 2008 investigation.
the bureau had been called in by the Brazilian authorities after the country's own National Institute of Criminology (Inc) had been unable to crack the passphrases used to secure the drives by suspect banker, Daniel Dantas.Brazilian reports state that two programs were used to encrypt the drives, one of which was the popular and widely-used free open source program TrueCrypt. Experts in both countries apparently spent months trying to discover the passphrases using a dictionary attack, A technique that involves trying out large numbers of possible character combinations until the correct sequence is found. Users who use it must keep the key in mind. If you forget the key, no one can recover your encrypted files
TrueCrypt, the official website of TrueCrypt, uses the asymmetric encryption method to keep the private key of the document. The asymmetric encryption method uses the form of public key and private key to encrypt the file. Users can encrypt files with public key and decrypt files with private key. Common asymmetric encryption algorithms include RSA, ElGamal, ECC and so on. The advantage of asymmetric encryption is that the complexity of the key is generally very high, which can effectively prevent violent cracking. The disadvantage is that there is a certain threshold, which is not suitable for ordinary users. Go to top method 1. Indivial users can consider using RSA for encryption. First, you can create a public key and a private key. Click here to generate the key. After keeping the public key and private key properly, you can encrypt and decrypt with the public key. Click here to encrypt and decrypt. RSA public key and private key generation process RSA public key and private key generation process randomly choose two large prime numbers P and Q, P is not equal to Q, calculate n = PQ. According to Euler function, R is obtained= φ( N) = φ( p) φ( q) = (p-1) (Q-1) select an integer E which is less than R and obtain the mole inverse element of e with respect to mole R, named D If and only if e and R are coprime, the records of P and Q are destroyed N. E) is the public key and (n, d) is the private key. Second, we can use PGP (pretty good privacy) tool to encrypt files. PGP encryption allows each public key to bind to all information of a user. Compared with RSA, the function of PGP is more perfect and reliable. However, with the upgrade of Pgp, new encrypted messages may not be decrypted by the old PGP system, so users should be familiar with PGP settings before using PGP. There are many PGP encryption tools on the Internet, so the editor will not list them
Introction to Pgp in Wiki PGP online encryption and decryption system PGP command FAQ advanced method to keep the private key. The above ways to keep the private key are very common. An experienced attacker may still get the user's private key file. For more advanced private key storage methods, please refer to the advanced teaching content of bitcoin in the future.