Bitcoin cold wallet IOS

1. Search bitcoin wallet in Appstore and bitcoin in overseas account, then you can download it.

2.

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 account

2. 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 storage

offline 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

3. Pay and collect bitcoin with your Android phone. This is a full-featured bitcoin wallet. Please note that this app is still being tested and there is still a possibility of losing bitcoin

4. It refers to offline wallet. Users usually send and receive bitcoin by using offline bitcoin wallet address, and then confirm signature by using wallet private key offline. Therefore, hackers are unable to steal the private key of cold wallet. Because there is a link to confirm the signature offline, bitcoin cold wallet is not as convenient as hot wallet.

5. At present, blockchain technology financing is popular. In the early stage, packaging roadshow publicity attracts angel investment, and in the later stage, digital currency online transaction is issued for financing in the trading market. The cycle is generally 1-3 months, online and offline at the same time, and the cost is low. At present, it is a very safe and convenient way, that is, to find a blockchain team with excellent technology and rich channels, You can find out.

6. Blockchain technology is the underlying technology of bitcoin. In the early days, not many people paid attention to the underlying technology of bitcoin. However, bitcoin has been running stably for many years without any centralized organization operation and management, and there have been no problems. So many people have noticed that the underlying technology may have a great mechanism, and it can be used not only in bitcoin, but also in many fields. Therefore, bitcoin technology is abstracted, which is called blockchain technology or distributed ledger technology. So from a certain point of view, bitcoin can be regarded as the first application of blockchain, and blockchain is more similar to the underlying technology such as TCP / IP, which will be extended to more and more instries in the future.

7. As a matter of fact, the price of the 10000 Ma power bank is 60 yuan. After all, the cost of the cell is there. Finally, Xiaomi's can be optimized.

8. There should be one in the app store in the United States, but you should not change the app store to the United States.
1. Go to the settings of iTunes and app store.
2. Click appleid and view Apple ID.
3. After entering the password, click change country and region.
4. Improve the information