How does bitcoin keep secret
bitcoin, Ruitai coin, Laite coin, Ethereum and other digital cryptocurrencies all use blockchain technology
blockchain is an important concept of bitcoin, which is essentially a decentralized database and the underlying technology of bitcoin. Blockchain is a series of data blocks generated by cryptography. Each data block contains the information of a bitcoin network transaction, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block.
unlike all currencies, bitcoin does not rely on a specific currency institution to issue. It is generated by a large number of calculations based on a specific algorithm. 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
according to the notice on preventing the financing risk of token issuance, there is no approved digital currency trading platform in China. According to China's digital currency regulatory framework, investors have the freedom to participate in digital currency transactions at their own risk
warm tips: the above information is for reference only. Before investing, it is recommended that you first understand the risks existing in the project, and understand the investors, investment institutions, chain activity and other information of the project, rather than blindly investing or mistakenly entering the capital market. Investment is risky, so we should be cautious when entering the market
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there are basically two kinds of attacks, one is dictionary attack, the other is brute force attack
dictionary attack is to use common passwords and their simple variants as keys one by one. As long as your pass phrase is not hard enough, the possibility of successful attack is very high. So if you want to use this, you need to popularize the knowledge of cryptography first, and don't think it's very safe to add a long password
if you don't use the wallet generated by pass phrase, you can only crack it violently, which is equivalent to enumerating all the possible keys. At present, this is impossible, even if the electronic computer is becoming more and more powerful. However, quantum computer can do it theoretically, but don't worry too much. If such a powerful quantum computer comes out, it will not only endanger bitcoin
at the same time, bitcoin has a second layer of protection: if an address only accepts bitcoin but does not output it, its public key is confidential, that is to say, no one else can see the box, only the box number. At present, the process of decing the box from the box number can't even be done by quantum computer. In other words, if there is a quantum computer, bitcoin has a last line of Defense: it's temporarily safe to transfer your money to a new address
finally, some time ago, the wallet generated by the Android client was attacked because of a bug in the underlying random number generator. In fact, this function is not random securerandom, which Google quickly admitted and fixed. It's hard to say whether this kind of thing will happen again, but I don't think we need to worry too much.
buy bitcoin anonymously
the first thing you can do is buy bitcoin anonymously
the first option is to buy them in cash to avoid completely online transactions. Most online transactions are similar, it requires you to upload your ID card. You can buy bitcoin with ATM cash or meet the seller in person“ In the section "we buy bitcoin with cash", there is more information about how to buy bitcoin with cash
the second best option is to buy them on virwox. It's not really completely anonymous, because you need to disclose some information, but it's still better than most bitcoin transactions that need to provide the required bank accounts and personal documents
you don't need anything here, you just need a free account for virtual transactions. With this account, you can buy another currency - Second Life Linden (SLL). You have different choices to buy Linden, such as PayPal and skrill. But considering that a good option for anonymity is Paysafecard payment, with Paysafecard you can buy bitcoin at any store. With Paysafecard, you can cash anonymous funds with your virwox even if you don't have an ID card, a bank account or a credit card. Then you can easily convert your second life Linden into bitcoin without verification
finally, you can get bitcoin through anonymous bitcoin loans
according to our experience, it is impossible to purchase bitcoin anonymously with a credit card
virwox anonymous buy bitcoin
mix your bitcoin
if you already have your bitcoin, it is particularly important that bitcoin users can mix their transactions with other users by using mixers, so bitcoin mixers are also known as bitcoin "tumbling" or "foundry". It's the server that breaks the connection between you and your bitcoin account. Mixers mask the flow of your bitcoin from one address to the next. Although bitcoin mixers cannot guarantee 100% anonymity, they provide a very high level of anonymity
we recommend that you use high-quality online currency mixing services, such as bitcoin mixers or currency mixers, which can conct regular bitcoin transactions for users who cannot link to the original. To further enhance the security of transactions, they provide the opportunity to use two or more forwarding addresses and appropriate time to delay, so as to immediately delete all file log related transactions. You can also use sharedcoin because it's free, but it's a bit complicated. In addition, if you use anonymous tor browser, you may try bitconinfog
it should be noted that there are many fraudsters in providing bitcoin mixing services
bitcoin is usually stored in a software program called bitcoin wallet. If your wallet and your personal information are identifiable, the above information will not help you. If you want to maintain considerable anonymity when using bitcoin, such as paying for alt websites, then you should register at least one wallet with an anonymous account and one-time email address
you can also use different wallets for each transaction to avoid tracking you for multiple transactions. It's like maintaining multiple independent identities. A simple way to maintain multiple wallets is to use a simple and lightweight software wallet, multbit, which allows multiple wallets to be managed on a single software program
if you want to be more anonymous, we suggest that you make a bitcoin wallet. Perhaps an easier way is to use the code on bitaddress.org
the open bitcoin privacy project has released their first complete report on the privacy level of the bitcoin wallet that is not valid. The best and most hidden bitcoin wallet is darkwallet, and the second two wallets with good concealment are armory and mycelium
anonymous bitcoin debit card
e-coin is a British company that has launched a virtual and physical Visa debit card that can store bitcoin. To use this debit card, you need to pay a small fee at present
you can order credit or debit cards that are specified in US dollar, euro and pound sterling. All it needs is a valid email address and basic personal information to register. Once you request to register a debit card, it will be sent to your email address. But at present, e-coin has not provided bitcoin debit card service to the United States
you can use the e-coin credit card until you reach the limit. You can get an unverified card and use up to $2500. Once you reach the limit, you have to verify your identity - a certificate that scans your ID or passport and address, or order a new card. If you prefer MasterCard, bitgold and advancedcash debit cards are OK<
bitcoin transactions
bitcoin transactions are never truly anonymous and can be queried through blockchain (blockchain is a comprehensive database for recording bitcoin transactions)
almost all transactions require you to verify your identity by sending a scanned personal certificate, and you also need to report large transactions to government authorities. When you use bitcoin to pay for goods and services, you need to provide your name and address to the seller many times. This means that someone who wants to track your trading activities can use your ID card information to track your future trading activities or study your previous trading activities. All in all, it has damaged your security and privacy.
If bitcoin accounts are decentralized, so are hackers. Bitcoin, which uses blockchain technology, is not more secure than bank accounts. On the contrary, it is vulnerable to hackers. So, in the world of virtual currency, how to protect the security of account funds
Secret your private key address
the bitcoin address is the only information needed to define the distribution and transmission end of bitcoin. These addresses are generated anonymously by the user's wallet. Once the address is used, all the transaction history related to it will destroy the confidentiality of the address. Anyone can view the balance and all transactions at any address. Because users usually need to disclose their identity in order to receive services or goods, the bitcoin address cannot be completely anonymous. For these reasons, it is better to use bitcoin address only once, and users must be careful not to disclose the address
When replacing the computer, try to destroy the hard disk of the original computer. Don't save or publish the private key of bitcoin to the cloud, mailbox or collection. If a network administrator writes a regular expression to retrieve the text, he can find all the information and crack the user's account2. Stored in bitcoin wallet
many bitcoin exchanges have been attacked by hackers. If you use the wallet of bitcoin exchange, please use Google's "double authentication" to ensure security. During the development of virtual currency, there have been many cases of bitcoin exchange running away. The exchange owns the private key of the user's wallet, which is not a safe way to save bitcoin
bitcoin wallet has a wide range of customers, which is more secure than the wallet service of bitcoin exchange. No matter what kind of wallet you choose, you should choose a strong password. Don't use the same password as the registered email. At the same time, do not put eggs in the same basket, choose multiple storage ways to improve the security of assets
using the genuine system of bitcoin wallet, regularly updating security vulnerabilities and fixing bugs can improve security. Some studies have pointed out that IOS system is more secure than Android system, because the existing security vulnerabilities of Android system may be relatively easy to be attacked by hackers
3. The most common way to identify phishing sites is phishing sites. Hackers will create a domain name similar to bitcoin website, which may be sent to users through e-mail and other channels. Once users try to log on the website, hackers will record their login information
so be careful before clicking any link. Many browsers have the service of "phishing check". If you carefully identify the domain name of the website, you can identify the phishing website
4. Guard against Keylogger
in addition to phishing sites, the common attack method of hackers is Keylogger. Keyboarding is the easiest way to capture passwords. The deception of key recording software is very high, even the technical house may believe it. In short, a keyboard recorder is actually a script code. Once it is installed on the operating system of the target computer, it will record all the keystrokes on the keyboard and send them to hackers, mostly through FTP
the successful method of introcing Keylogger depends on many factors, including the operating system, the lifetime of keylogger and the anti infection level of target computer. Keyboard recorder is usually injected through web browser. The security vulnerability of the target machine depends on the type of browser it uses; Whether the operating system installed on the target machine is genuine, and whether the operating system is updated with the latest security vulnerabilities and bug fixes
5. Watch out for USB theft program
the software will retrieve your password and login credentials stored in the browser. Once FUD, some stealing programs can be very powerful. In most cases, a steal program is a. Bat file, which can be injected into the target machine online or driven by USB
6. Using proxy and VPN
proxy server and VPN can increase the security of your bitcoin wallet, although most people mistakenly believe that VPN makes them anonymous online. But in fact, VPN only improves the privacy of users. VPN can rece the possibility of hackers accessing the router to open the port, which also means that they are less likely to succeed
7. Encryption and backup wallet
wallet backup is essential to prevent losses caused by computer failure or human error. If a computer or mobile phone is lost, a backup wallet can help retrieve the bitcoin. At the same time to encrypt the online backup, any backup that can be accessed through the Internet should be encrypted
how to back up your wallet? First, close the bitcoin client, then select the backup wallet of the menu file in the main interface, and the wallet.dat file to other hard disk partition, mobile hard disk or U disk
it should be noted that the entire wallet should be backed up, not just the private key. Bitcoin wallet has many private keys for receiving transaction change. If only the private keys of visible bitcoin addresses are backed up, most of the funds may not be restored from the backup. Also, back up your wallet regularly to make sure that all recent bitcoin change addresses and newly created bitcoin addresses are included in the backup
Cold storageoffline wallet is called "cold storage", which is the safest way to save digital currency
cold storage is an offline wallet that is not connected to the network, that is, it will not be attacked by black horse and Trojan horse. However, because the operation is relatively complex and the price is relatively expensive, the price of offline wallet is more than 1000 yuan, which is suitable for users who have a lot of bitcoin and are ready to hold it for a long time
although the operation of cold storage is relatively complex, it is the safest storage method. At present, only cold storage has truly realized the inviolability of personal assets and is not subject to the supervision of others
if you want to know more about bitcoin information, please send me a private message and avoid detours
2. Buy bitcoin on the wallet platform, such as (bitpai Cobo)
3. As long as you buy bitcoin according to the OTC rules of the platform, there will be no problem. If you find any problem, you can contact customer service immediately
4. In the end, the cards may be frozen, so when you choose the merchants on the platform, you must choose those with high transaction rate and high transaction frequency