What are the risks of blockchain wallet
@ block chaining
to make complaints about the center is code open source, you can check, ensure that they will not install viruses and upload your personal data. p>
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it doesn't matter if the wallet goes out of business, just export the private key and save it to other wallets
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the exchange transfer fee is about 30 yuan per time, and the transfer from your wallet is only a few cents per time
cold wallet refers to the wallet where the network can't access your private key. Generally, it will take a notebook to record it. Although it avoids the risk of being stolen by hackers, it may also be lost
a hot wallet is a wallet that can access your private key on the Internet. Hot wallets are often in the form of online wallets, which are not easy to lose, but also have risks.
is similar to Alipay or bank card.
ordinary investors and users can use wallets to achieve what needs
What do you think of when you think of wallet
1. Hot wallet, cold wallet, observation wallet—— Realize the most basic function of a wallet: storage
2. DAPP entry of different public chains—— The entrances of the coin holders to the dapps of the public chains
3. Flash cash, direct trading in the exchange and cash out—— The transaction and Realization of digital assets
4. Pay attention to the market information to understand the currency price
Yes, some blockchain wallets have been implemented. It makes people feel like "a small purse, a big world". The actions that users want to complete in the blockchain world can be basically solved in their wallets
take the tokenpocket wallet that I often use as an example< How to understand hot wallet, cold wallet and observation wallet
Hot Wallet: Online wallet, online wallet. It is convenient to withdraw money. You can also check the wallet assets, balance and transaction records at any time
cold Wallet: it's an offline wallet. Since it's offline and not connected to the Internet, how can I realize it when I need to transfer money or withdraw money? Just watch your wallet
observe Wallet: a wallet that observes the assets of a cold wallet and assists in withdrawing the cold wallet's assets< Second, TP SDK integrates Tron
the latest version of TP SDK now supports Tron, that is to say, when the independent DAPP on the wave field public chain is connected to the tokenpocket SDK, it can realize the operation of Tron authorization login, data signature, token transfer, transaction signature, etc
in this way, the development of Tron independent DAPP is greatly accelerated
Third, asset collection function
we usually have such a phenomenon: everyone has multiple accounts, and these accounts have the same token. If you want to collect the same asset on these different accounts, you need the asset collection function
there is a problem: if the passwords of all your accounts are the same, you can authorize them once. If the passwords are different, you need to authorize each time
note: please do not close or exit the collection interface before the completion of the collection operation to prevent errors
Fourth, experience the colorful DAPP on each public chain
in the TP interface, select the Tron category to enter the Tron DAPP page. Play all kinds of DAPP, or enter other public chains, such as EOS, Jingtong, etc
there are more functions in the wallet, waiting for further exploration.
1. Wallet address: similar to the bank card number, a person can have multiple bank cards. Similarly, he can also have multiple wallet addresses. A wallet address can only correspond to one private key
2. Wallet ID: customer ID (name) similar to bank card
3. Public key and private key: the holder of the private key is the holder of the currency in the bank card. The private key can calculate the public key, the public key can generate the wallet address through a series of digital signatures, and the data encrypted by the private key can be decrypted by the public key, or vice versa
I know this area quite well, and I have some ideas to develop a blockchain wallet. After all, it is a high-tech wallet. Before I learned about a development company called Xuanling technology on the Internet, and also consulted the people over there. I felt that it was quite professional. I hope I can help you~
American Stock Research Society points out: different styles of strategies have different requirements for back testing, such as multi factor stock selection or trend strategy. The following points should be noted:
1. Distinguish the data in the sample from the data out of the sample, which is very similar to machine learning. The data in the sample is used for training, and the data out of the sample is used for verification the purpose of this is to avoid the over fitting trap
2. Income distribution: look at the income distribution of all transactions after your back test, and see whether your income source is a few times of large income or a few times of small income if it comes from a large return, your return will fluctuate greatly, and the firm offer will often fail to achieve your effect
3 if you have a parameter that is too sensitive to adjust, it will have a great impact on the revenue, and the situation of your real offer and the simulated offer are also likely to be different
strictly speaking, this kind of strategy avoids some common pitfalls, and it is relatively easy to achieve back testing and real offer
JD quantitative has recently launched some technical indicators of tongdaxin, which are not bad. You can go and have a look, and you should learn a lot< br />