Offline bitcoin change

1.

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

< / OL >

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

2. Bitcoin will set the balance of the address used for consumption (consumption address) to zero in business. When the amount to be paid is less than the available balance, it is necessary to tell bitcoin network the address to which the change will be sent, namely "change address". The change address may or may not be the address used in the original consumption.

3. 1. Your understanding is correct,
2. The bottom one on the right is the change address. If you don't understand, go to the bitcoin teaching of P2P bucks

4. Bitcoin transfer can transfer the balance of multiple addresses out or into multiple addresses at one time
for example, you need to pay Niuniu 5 bitcoins, but there are 1 / 2 / 2 bitcoins in each of your a / B / C addresses, and the balance of each address is not enough to pay for 5 bitcoins
at this time, you can initiate a transfer and transfer 5 bitcoins from a / B / C to Niuniu. Take chestnuts. If you have five bitcoin addresses, you only need to transfer one to Niuniu. You need to tell the miner when transferring money: I have five bitcoins, one of which will be transferred to Niuniu, and the other four will be transferred back to myself (can be the original address or create a new address)
don't forget to say, otherwise the remaining four bitcoins will be used as handling charges for miners. This is the change mechanism of bitcoin.

5. 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.

6. No, it's all about the deal

7. You can buy and sell.