How to extract BTC secret key

1. In order to make it easier for new people to understand, sister coin will use some metaphors. Although she is not strict, she will understand better
the private key is like your bank card password
the address of bitcoin wallet is like your bank card
as long as you have the bank card and password, anyone can withdraw money from ATM
the address of bitcoin wallet is public, which means that everyone else has your bank card, so your bank card password (private key) becomes very important at this time
once your key is disclosed, others can transfer your bitcoin

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2.

The private key of bitcoin wallet cannot be viewed online. Bitcoin exists on the platform. To download core or classic is the real wallet, and then you can view it

[description of private key of bitcoin wallet]:

1. Wallet encryption refers to automatically encrypting and storing the wallet with private key. The official bitcoin client supports wallet encryption since version 0.4.0. The encrypted wallet will prompt you to enter your password every time you pay. If the password is wrong, the client will refuse to pay

2. If you replace it with the earliest backup wallet (wallet. DAT), you can still trade normally. Considering the principle of bitcoin, it can be concluded that as long as there is a private key (wallet), you can prove that you are the legitimate owner of the wallet. No matter whether you encrypt or delete the wallet (the core is the private key corresponding to an address), you can't deny it

3. When backing up the bitcoin wallet, you should also pay attention to the existence of bitcoin payment change mechanism (for example, if you send 50 BTC in a complete 100 BTC to an address, the system will send 50 BTC to the other party's address, and return 50 BTC to a new address of your client, which will not be directly displayed in your address list)

4. After sending bitcoin to other addresses 100 times or using 100 different addresses to receive bitcoin, please back up your wallet again, otherwise the returned and received bitcoin will be lost forever. In addition to encrypting wallets, users can also generate offline paper wallets and brain wallets

3. API keys are used to program transactions. One time password, with Google verifier. Download Google verifier to your mobile phone and install it. Scan the two-dimensional code with a verifier to get a one-time password. studybtc

4. Wallet official will have BCC notes, this does not need our own initiative to operate. However, BCC has been born for a long time and has been supported by most mainstream trading platforms at home and abroad
BCC started mining at 20:00 on August 1, and separated from the bitcoin main chain in block 478559. The first BCC block was excavated in viabtc, the Chinese ore pool, and then the next block 478560 was excavated. Before the separation from the main chain, the data stored in the blockchain and the running software are compatible with all bitcoin nodes. After the separation from the main chain, it begins to execute new code and package large blocks. Thus, a new BCC blockchain is born, and BCC also begins to develop independently
at present, BCC network tends to be stable, and the block output speed is basically close to the average of one block in 10 minutes. The future of BCC will have a lot of room for development, and the infrastructure of BCC is graally improving.

5. It depends on whether the wallet has the function of automatic collection. If it is not open, it can't be withdrawn. However, bitcoin cash has been born for a long time, and it can't be withdrawn
on August 1, 2018, bitcoin carried out a hard bifurcation to proce BCH. BCH is the result of community division, not a kind of bifurcated coin. BCH has its own strong community support. However, at that time, some wallets did not support BCH to collect.

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7. Bitcoin address is used when receiving or sending bitcoin. It is a string composed of numbers and letters

bitcoin is based on cryptography, so its address is anonymous, which greatly ensures the security of the address, and the private key is used to protect the user's ownership of bitcoin

both exist to ensure the security of user accounts.