Bitcoin is completely offline

1. What you want to ask is how to save bitcoin on USB flash drive. First of all, your bitcoin is generated by yourself, and you have a private key. Then you save the private key (in the form of string or QR code) to the USB flash drive. In the future, when you need to recover the bitcoin address, you can import the string or QR code of the private key.

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if it's transferred to your bitcoin wallet, if you don't save your private key, it's almost impossible to get it back

if it is saved in the website account, as long as you can find the website and go to retrieve the password to login, it is still possible to retrieve it

make sure you remember the website first. If you can't remember, it's useless to say anything< br />

3.

Hello, there are several key points in your question that need special attention. I will elaborate them as follows:

1. in your description & quot; Download a bitcoin wallet software & quot;: This step should be cautious. First of all, your goal is to make bitcoin paper wallets offline. What you want to download is actually [bitcoin offline paper wallets making tool], and these tools are intermingled, and some are even very risky. So what kind of [paper wallets making tool] do you want to choose? It must be an open source (that is, the source code is completely open) proction tool that has been recognized by all of us for many years. After many years, it has experienced the test of time. You can search the Internet for a comparative understanding of this point. It is suggested to search the "secure bitcoin offline paper wallet" to learn more about the comparison and be willing to spend more time

2. to make bitcoin offline paper wallet, it is right to "unplug the network cable". At this time, it is true that the computer you make the paper wallet is completely isolated from the whole Internet, which is the meaning of offline. At this time, you need not worry, because the address and private key of bitcoin wallet are just a certificate, Bitcoin doesn't really need to be put into this wallet (it's totally different from the real wallet, but the network can understand it). The address of bitcoin's wallet is just a record of several public books on the bitcoin blockchain network. Therefore, you can safely use the bitcoin offline paper wallet, The key point is that you actually the private key address of the bitcoin offline paper wallet onto the paper, and ensure that there is no mistake. Save the public key to receive other people's bitcoin transfer. Then, the bitcoin offline paper wallet you generate will be fully recognized by the bitcoin network

3. it is mentioned in your problem description that "I write down the public key and private key with paper, then smash the computer to pieces, and then burn down the host screen with fire" - this is not necessary at all. As long as you unplug the network cable in the process of offline making bitcoin offline paper wallet, no one can peek at your screen, So as long as you choose the secure bitcoin offline paper wallet tool, the wallet you get will be secure. Of course, the most important thing is that you should store the note with the private key of the bitcoin offline paper wallet in a fireproof and waterproof safe. As for the computer you use to generate the bitcoin offline paper wallet, you don't need to break it. At most, you can destroy the hard disk. In the safe bitcoin offline paper wallet tutorial searched above, there are detailed instructions on how to do the subsequent processing

4. finally, you mentioned the operation of transferring money to your offline generated bitcoin paper wallet, which is no different from transferring money to any other bitcoin address. The synchronization process is carried out in the whole bitcoin blockchain network and needs to wait, but this is the confirmation process of the whole network

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I hope my answer can help you. It is recommended that you fully study before you operate< br />

4. 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 />

5. Enter the game to open the dialog box and enter / weinminer blocklist pickaxe add minecraft:stone It's OK

6. Offline cold storage of bitcoin is very simple and does not require any technical content
first, download a bitcoin wallet client to the computer or USB flash disk
secondly, send bitcoin to the wallet
finally, the offline cold storage of bitcoin can be completed by disconnecting the computer or USB flash disk that stores the bitcoin wallet
the same is true for offline cold storage methods of digital cryptocurrencies such as Puyin, Laite coin and Ethereum.

7. It's about your network speed. It's not recommended to download the wallet client. It's too troublesome. Now the online wallet technology has been very mature, very convenient to use, the safety factor is also constantly improving. If you don't know the technology, it is recommended to register an online wallet
of course, if you are a technology tycoon, it is recommended that you download the wallet client, and offline storage of bitcoin is currently recognized as the safest way to store bitcoin.

8. No, bitcoin relies on the computing power of the graphics card. If it is offline, it will have no computing power. Similarly, the traffic ore, known as domestic bitcoin, can only be g with the computer on. The traffic ore uploads the idle bandwidth of the indivial. After offline, it can't be uploaded, so it can't be mined.