Blockchain technology is in the stage of high-speed development, and the next step is gradually towards the application of DAPP, and the traffic data naturally shows an upward trend. As an indispensable tool to link blockchain ecology, wallet has become the entrance for many projects to enter DAPP ecology and participate in the whole ecological construction. What is a purse? Wallet is an application. It controls user access, manages keys and addresses, tracks balances, and creates and signs transactions. In a narrower sense, from the programmer's point of view, "wallet" refers to the data structure used to store and manage the user's key. The wallet is actually a container for the private key. The common misconception is that the bitcoin wallet contains bitcoin, but in fact there is only the key in the wallet. It can also be said that if you have the private key, you have the right to use the wallet. When it comes to blockchain wallets, there are related concepts such as keystore, cold wallets, hot wallets, and hardware wallets. The essence of keysore keysore is the encrypted private key. When you use the wallet tool to create a wallet key, you need to enter a password. What is the use of this password? You must know the password of the keystore when you use the keystore to carry out wallet operations such as transaction transfer. A cold wallet needs to keep its private key. A cold wallet is a wallet whose private key cannot be accessed by the network. Cold wallets often rely on "cold" devices to ensure the security of bitcoin's private key, such as computers that are not connected to the Internet, mobile phones, and small notebooks with private key addresses. Cold wallet avoids the risk of hackers stealing the private key, but it may face physical security risks, such as computer hard disk damage, small notebook being used as toilet paper and so on. Hot wallet hot wallet is a wallet that can access your private key on the Internet. Hot wallets are often in the form of online wallets. When using hot money package, it is better to set different passwords on different platforms and open secondary authentication to ensure the security of your assets. Hardware wallet hardware wallet, as the name suggests, is to use the hardware you can touch to facilitate you to generate and store keys. The well-known ones are trezor and ledger. You can go to Taobao to see if they can be sold. In fact, it is a hardware similar to the U shield of our bank. Send two pictures for you to have a look. I haven't used them. The pictures are from Taobao. However, it's easy to have security loopholes if it doesn't work well. It's better to keep and back them up. The safety of the wallet is just like the bank's memory card. The safety of the wallet is very important, one is to guard against theft, the other is to prevent loss. ·Keep the private key well. As a friendly format of wallet private key, mnemonics are very convenient for you to backup and import. Because of its plaintext, we do not recommend that it be saved electronically, but copied and kept in the notebook. It and keystore are complementary to each other as dual backup. Keystores can be stored online, such as cloud disk, or in their own U disk (this is what the hardware wallet takes advantage of), which is relatively safer than online storage. Even if hackers steal your keystores, they can't steal the assets without the password of the keystores, so the password of the keystores is particularly important at this time. It is recommended that users store keystores and passwords separately, not in the same place, and use high-strength, randomly generated passwords. ·Anti loss multiple backup, multiple backup. For example, when backing up a wallet, not only the keystore, but also the mnemonic words and private key should be backed up. This is a multiple backup. The reason why wallet is an important tool is that only when users master the private key can they enjoy the convenience and even value-added benefits brought by blockchain. Many wallet project parties have a good eye on this and naturally become a main entrance of traffic. Now most of the wallets have not formed a mature profit model. Once the technology becomes more mature and the number of users increases, more profit models will naturally emerge.
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