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1. Introduction to digital currency wallet development, blockchain digital wallet

The blockchain digital wallet system can handle various mainstream digital currencies such as Bitcoin and Ethereum. Unified management and storage means that all currencies are managed in one wallet, which greatly reduces the use threshold and management burden of digital currencies, and is also very flexible and convenient to use.

Blockchain digital currency wallet functions:

1. Financial management: When developing a blockchain wallet APP, you can add mortgage loan functions or other functions. For example, bringing money to earn interest or other financial management functions.

2. Recommendation rewards: This is the reward mechanism of the wallet APP. For example, if you invite new users through links or other channels, you will also receive certain rewards. This mechanism can also This will also attract more users.

4. Trading system: If you want to trade when you see the market, the trading module in the general wallet can have Lianzhong's approach. For this purpose, a trading module can be directly developed and then used by those who are strong and able to afford funds.

5. Market information: For users, market conditions are very important. They can obtain new information at any time in order to make timely adjustments, so this function is equally important.

Advantages of blockchain wallet App development:

1. Distributed storage

Blockchain wallets that use distributed storage eliminate The influence of centralization is to store data in different nodes in a distributed manner, ensuring the security of users' wallets and data, and removing the central management mechanism. If someone wants to steal the user's wallet account information, they need to first find the node where the user stores the information, and then attack different data storage nodes at the same time, instead of just attacking one central point as before, which increases the number of hackers. The difficulty of stealing user information ensures the security of user information.

2. Encryption algorithm

Every data storage node in education has the application of encryption algorithm, and a user’s data is not only stored in several nodes, but also Among the unclear nodes. It may be hundreds, thousands, tens of thousands, etc. Each node has the application of encryption algorithm, which further improves the security of account information.

3. Traceability

Traceability is the most practical aspect of a blockchain wallet. When a user transfers a wrong account, the transferred money can be recovered through the application of technology. Chase back. Since transfer is also a kind of data transmission information, we only need to trace the source of the data, submit a management application, and retrieve the money data.

2. [Blockchain] What is a blockchain wallet

When talking about blockchain wallets, we have to talk about Bitcoin wallets (Bitcoin core). Most other blockchain wallets are modeled after Bitcoin wallets. Bitcoin wallets are our tools for managing Bitcoins.

Our Bitcoin information is stored in the Bitcoin wallet, including Bitcoin address (similar to your bank card account number) and private key (similar to your bank card password). The Bitcoin wallet can Store multiple Bitcoin addresses and the independent private keys corresponding to each Bitcoin address.

The core function of a Bitcoin wallet is to protect your private key. If the wallet is lost, you may lose your Bitcoins forever.

Blockchain wallets come in many forms.

According to whether the user has the private key, wallets can be divided into: on-chain wallet (onchain wallet) and escrow wallet (offchain wallet). There are two differences between them:

Regarding on-chain wallets (onchain wallets), we can divide them into cold wallets and hot wallets according to whether the private key storage is connected to the Internet; we also call cold wallets and hot wallets They are offline wallet and online wallet.

Generally speaking, hardware wallets are cold wallets (it is generally recommended to use cold wallets to store large amounts of digital currency that are intended to be held for a long time). In addition to this kind of professional equipment, we can also use offline computers, Mobile phones, paper wallets, brain wallets, etc. are used as cold wallets to store our digital assets.

The biggest advantage of a cold wallet is its security, because it does not touch the Internet, which can greatly reduce the possibility of hacker attacks; the only thing you need to worry about is not to lose your cold wallet.

Corresponding to the cold wallet is the hot wallet. Hot wallets need to be connected to the Internet; hot wallets can be divided into desktop wallets, mobile wallets and web wallets.

Hot wallets are often in the form of online wallets, so when using hot wallets it is best to set different passwords on different platforms and enable secondary authentication to ensure the security of your assets.

According to the maintenance method of blockchain data and the degree of decentralization of the wallet, wallets can be divided into full node wallets, light node wallets, and centralized wallets.

Most full-node wallets are desktop wallets, representatives of which include Bitcoin-Core core wallet, Geth, Parity, etc. Such wallets need to synchronize all blockchain data and occupy a large amount of memory. , but can achieve complete decentralization.

Most mobile wallets and web wallets are light node wallets. Light wallets rely on other full nodes in the blockchain network and only synchronize transaction data related to themselves, which can basically achieve decentralization.

The centralized wallet does not rely on the blockchain network. All data is obtained from its own centralized server; however, the transaction efficiency is very high and can be credited in real time. The account you registered in the trading platform It is a centralized wallet.

Remember that in the world of blockchain, whoever holds the private key is the real owner of digital assets.

3. What is the function of a blockchain wallet? Can anyone explain it clearly

The essence of a blockchain wallet is a private key, which is a random hash value. String. Once you have the private key, you have the right to use the wallet. According to the private key storage method, it can be divided into: cold wallet and hot wallet
Cold wallet refers to a wallet where the network cannot access your private key. Generally, a notebook is used to record it, although it avoids the risk of the private key being stolen by hackers. , but it may also be lost.
A hot wallet refers to a wallet that has access to your private key via the Internet. Hot wallets are often in the form of online wallets, which are not easy to lose, but are also risky.

4. What is blockchain and how to make money with blockchain

Blockchain is a new type of computer technology such as distributed data storage, point-to-point transmission, consensus mechanism, and encryption algorithm. Application mode. The so-called consensus mechanism is a mathematical algorithm that establishes trust and obtains rights and interests between different nodes in the blockchain system.

How to make money in the blockchain:

1. Earn commissions through promotion.

The blockchain approach is to first register an exchange account, generate your own invitation link, and then promote it. If someone registers the exchange through your link and generates transactions, you will get a commission.

2. Coin speculation.

Speculating in currencies is like speculating in stocks. Coin speculation is a way to make money on the Blockchain with the lowest threshold.

3. Mining.

"Mining" in Bitcoin is the accounting process. This process requires grabbing, and if you grab the opportunity to bookkeeping rights, you will be rewarded, and the reward is Bitcoin. This behavior is "mining".

4. Develop wallet.

The wallet is the infrastructure of the blockchain, just like the "Alipay Zheng Xinque" or "WeChat Pay" of the blockchain.

Extended information:

1. Blockchain is an important concept of Bitcoin. It is essentially a decentralized database and serves as the bottom layer of Bitcoin. technology. Blockchain is a series of data blocks generated using cryptographic methods. Each data block contains information about a Bitcoin network transaction and is used to verify the validity of its information (anti-counterfeiting) and generate the next block. piece.

2. Blockchain was born from Satoshi Nakamoto’s Bitcoin. Since 2009, various Bitcoin-like digital currencies have appeared, all based on public blockchains.

3. On January 20, 2016, the Digital Currency Seminar of the People’s Bank of China announced that it had achieved phased results in digital currency research. The meeting affirmed the value of digital currency in reducing the issuance of traditional currency and stated that the central bank is exploring the issuance of digital currency. The expression of the People’s Bank of China’s Digital Currency Seminar has greatly enhanced the confidence of the digital currency industry. This is the first time that the five central bank ministries and commissions have expressed a clear attitude towards digital currencies since they issued a notice on preventing Bitcoin risks on December 5, 2013.

Blockchain - Network

5. The Importance of Blockchain Wallets

Now more and more people are beginning to participate in blockchain projects , people who understand and participate in it believe that they will use blockchain wallets. The "wallet" here refers to a virtual tool used to store and use virtual currencies.

Wallets are mainly divided into cold wallets and hot wallets, which include private keys, public keys and auxiliary words. Next, I will explain their differences and functions in detail.

Cold wallet: A cold wallet refers to a wallet that is not connected to the Internet and stores digital currency offline. Users generate digital currency addresses and private keys on an offline wallet and then save them. The cold wallet integrates functions such as digital currency storage, multiple transaction password settings, publishing the latest market conditions and information, and providing hard fork solutions, which can effectively prevent hackers from stealing.

Hot wallet: Hot wallet refers to a wallet that needs to be connected to the Internet. It is more convenient to use, but now the network is more complex, there are many phishing websites, and there are risks, so it is difficult to use a wallet or exchange. It is best to set different passwords and enable secondary authentication to ensure the security of your assets.

In summary, cold wallets are more secure than hot wallets.

Private key: The private key is a string of data generated by a random algorithm. It can calculate the public key through an asymmetric encryption algorithm, and the public key can then calculate the currency address. The private key is very important, as the password is hidden from all but the owner of the address. Blockchain assets actualOn the blockchain, the owner actually only owns the private key, and has absolute control over the assets of the blockchain through the private key. Therefore, the core issue of blockchain asset security lies in the storage of the private key, and the owner needs to do a good job Keep it safe. Compared with the traditional form of username and password, the biggest advantage of using public key and private key transactions is to improve the security and integrity of data transmission. Because of the corresponding relationship between the two, users basically do not have to worry about the data transmission process. The possibility of being intercepted or modified by hackers. At the same time, because the private key encryption must be decrypted by the public key it generates, the sender does not have to worry about the data being forged by others.

Public key: The public key appears in pairs with the private key. Together with the private key, they form a key pair and are stored in the wallet. The public key is generated from the private key, but the private key cannot be derived from the public key. The public key can obtain the wallet address through a series of algorithm operations, so it can be used as a certificate of ownership of this wallet address.

Mnemonic phrase: The mnemonic phrase uses a fixed algorithm to convert the private key into more than ten common English words. The mnemonic phrase and the private key are interoperable and can be converted into each other. It is just a friendly format for the private key of the blockchain digital wallet.

Keystore: Mainly common in Ethereum wallet apps (Bitcoin is similar to the Ethereum Keystore mechanism: BIP38). It is obtained by encrypting the private key through the wallet password, and the mnemonic phrase Different, generally it can be saved as text or JSON format. In other words, Keystore needs to be decrypted with the wallet password before it is equivalent to the private key. Therefore, Keystore needs to be used with the wallet password to import the wallet. When a hacker steals the Keystore, without a password, it is possible to unlock the Keystore by brute force cracking the Keystore password. Therefore, it is recommended that users set a slightly more complicated password, such as adding special characters, at least 8 characters, and make it safe. storage.

In summary: The function of the wallet is to protect our private key. The private key is the full authority to control the assets. Only those who have the private key can use the virtual currency in this account. When using the wallet, remember not to disclose your wallet's private key, mnemonic phrase, Keystore and other information to others. This information is important information that can directly steal your digital assets.

Things to note when using the wallet:

1. Make a backup copy of the private key and mnemonic phrase. It is best to write a handwritten copy on your mobile phone and save it.

2. Do not click on unknown websites easily.

3. Do not take screenshots or take photos to save.

In short, the most important thing is to keep your private key.

6. Blockchain placeGuidelines on how to add a wallet address

1. Download the TP wallet, and then add a public chain. Whichever public chain you receive the airdrop from will be added to it!
2. Create a wallet for whichever public chain you need, and just fill in the requirements!
3. After creating the wallet, you will have the public chain address!
4. Then check which address the project requires, copy the address of your public chain, and leave the address as required!
5. After participating in the event and leaving your address, you also need to add the contract of this currency to your wallet, so that your wallet will display this currency, otherwise it will not be displayed by default!
6. After completing the above steps, just wait patiently. Some of them will not be credited directly, and the rest will not be credited all the time, because you have to collect the addresses to transfer coins and so on! If the blockchain is congested, it will take longer!
To claim the airdrop, you need a public chain address. Public chain addresses include Huobi Ecological Chain HECO, Binance Smart Chain BSC, etc. For coins on different chains, keep the addresses of different chains!

7. What is the meaning of wallet account in blockchain exchange

Digital wallet is a tool for storing, managing and using digital currencies, and it plays a decisive role in the field of blockchain . It is a software program or hardware device that stores cryptocurrency. In form, it is similar to an online bank account, which also has a customer ID, account number, and password. The password of the digital wallet is the "private key". Only through it can the wallet be opened and operated. Digital wallets have "receipt" and "transfer" functions, just like depositing and withdrawing money with a bank card. You need a card number and password to make normal deposits and safe withdrawals. A digital wallet does not store money, but your Bitcoin, Ethereum and other digital currencies or digital asset information.
The application fields of blockchain include digital currency, certificates, finance, anti-counterfeiting and traceability, privacy protection, supply chain, entertainment, etc. With the popularity of blockchain and Bitcoin, many related top domain names have been registered. , which has had a relatively large impact on the domain name industry.