Bitcoin cold wallet conflict
Publish: 2021-04-28 13:13:51
1. The method is to turn bitcoin client into green version, but it may have unpredictable problems to open it at the same time, so please experiment with small wallet first. The green method is to run the client exe with shortcut and parameters, bitcoin-qt.exe - dataDir = e: &# 92; Bitcoin, = followed by the path of the database folder. The default location of the database folder is% appdata% & # 92; Bitcoin added: because the wallet file is located in the database folder, so to open more at the same time, you need two database folders to put the wallet file in, and it's better to two client folders to run separately. In this case, I don't know if there is any risk in the transfer. Let's experiment with it.
2. 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.
3. The process of BTC address generation is as follows. You can check bitcoin Chinese wiki completely:
bitcoin address generation process
(Note: some numbers are marked with & quot; 0x" Begin with, meaning that the number is in hexadecimal notation& quot; 0x" It doesn't have any meaning in itself. It's a conventional writing method handed down from C language. For example, 0xa is 10 in decimal system. In addition, 1 byte = 8-bit binary = 2-bit hexadecimal)
in the first step, randomly select a 32 byte number and size from 1 to 0xFFFF ffff ffff ffff ffff ffff ffff fffe baae dce6 af48 a03b BFD2 5e8c d036 4141 as the private key
in the second step, the elliptic curve encryption algorithm (ecdsa-secp256k1) is used to calculate the uncompressed public key corresponding to the private key A total of 65 bytes, 1 byte is 0x04, 32 bytes are x coordinates, and 32 bytes are y coordinates
the third step is to calculate the SHA-256 hash value of the public key
the fourth step is to take the previous step result and calculate the ripemd-160 hash value
the fifth step is to take the previous step result and add the address version number (bitcoin main network version number "0x00")
00
the sixth step is to take the previous step result, Calculate the SHA-256 hash value
Step 7, take the result of the previous step, and then calculate the SHA-256 hash value (HA HA)
Step 8, take the first four bytes (8-bit hexadecimal)
d61967f6
Step 9 of the result of the previous step, and add these four bytes after the result of step 5, As a check (this is the hexadecimal form of the bitcoin address)
00d61967f6
Step 10: change the address with base58 notation (this is the most common form of bitcoin address)< br />
bitcoin address generation process
(Note: some numbers are marked with & quot; 0x" Begin with, meaning that the number is in hexadecimal notation& quot; 0x" It doesn't have any meaning in itself. It's a conventional writing method handed down from C language. For example, 0xa is 10 in decimal system. In addition, 1 byte = 8-bit binary = 2-bit hexadecimal)
in the first step, randomly select a 32 byte number and size from 1 to 0xFFFF ffff ffff ffff ffff ffff ffff fffe baae dce6 af48 a03b BFD2 5e8c d036 4141 as the private key
in the second step, the elliptic curve encryption algorithm (ecdsa-secp256k1) is used to calculate the uncompressed public key corresponding to the private key A total of 65 bytes, 1 byte is 0x04, 32 bytes are x coordinates, and 32 bytes are y coordinates
the third step is to calculate the SHA-256 hash value of the public key
the fourth step is to take the previous step result and calculate the ripemd-160 hash value
the fifth step is to take the previous step result and add the address version number (bitcoin main network version number "0x00")
00
the sixth step is to take the previous step result, Calculate the SHA-256 hash value
Step 7, take the result of the previous step, and then calculate the SHA-256 hash value (HA HA)
Step 8, take the first four bytes (8-bit hexadecimal)
d61967f6
Step 9 of the result of the previous step, and add these four bytes after the result of step 5, As a check (this is the hexadecimal form of the bitcoin address)
00d61967f6
Step 10: change the address with base58 notation (this is the most common form of bitcoin address)< br />
4. A cold wallet is an offline wallet. There is a hardware cold wallet, which is similar to a U disk. Another way is to use a computer or mobile phone that is not connected to the Internet to back up the bitcoin wallet files, install them offline and store them in it! Remember to the key and mnemonic words of your wallet and store them.
5. Elizabeth II, Isle of man, 1994
6. 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.
7. Chongqing jinwowo's wanjiadeng chain national tour integrates more users and traffic through the participation of more small and medium-sized enterprises, and precipitates them into big data through blockchain technology to form usable value big data. While bringing users and traffic to small and medium-sized enterprises, it can also help small and medium-sized enterprises realize precision marketing, trend prediction and other services through precipitated big data
jinwowo will continue to share technology and experience through the national tour of "wanjiadeng chain", enabling China's small and medium-sized enterprises to realize the transformation of digital economy.
jinwowo will continue to share technology and experience through the national tour of "wanjiadeng chain", enabling China's small and medium-sized enterprises to realize the transformation of digital economy.
8. 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.
9. Download a new packet in the update
Hot content