How to use offline bitcoin

1. At present, the main transaction modes in bitcoin market are as follows:
1. Legal currency transaction: that is to buy, sell or trade digital assets through legal currency. For example: bitcoin now quote 6 in case, then whether it is credit card or Alipay WeChat, anyway, buying money directly is the legal tender transaction.
2. Currency currency transaction: mainly for transactions between virtual currency and virtual currency, one of which is used as the pricing unit to purchase other currencies. Its trading rules are also based on price priority and time priority
3. Leverage Trading: it is to invest several times of the original amount with small amount of funds. In order to obtain the relative investment object volatility multiple yield, or loss. As the increase or decrease of margin does not move in proportion to the fluctuation of underlying assets, the risk is very high
4. Contract trading: contract trading is the general term for the futures contract trading of the 796 exchange in comparison with the special currency. In June 2013, 796 exchange took the lead in developing bitcoin weekly delivery standard Futures - t + 0 two-way trading virtual commodity barter contract (contract trading) in bitcoin instry

warm tips:
1. The above explanations are for reference only, without any suggestions
2. Before investing, it is recommended that you first understand the risks existing in the project, and clearly understand the investors, investment institutions, chain activity and other information of the project, rather than blindly investing or mistakenly entering the capital market. Investment is risky, so we should be cautious when entering the market
response time: January 28, 2021. Please refer to the official website of Ping An Bank for the latest business changes
[Ping An Bank I know] want to know more? Come and see "Ping An Bank I know" ~
https://b.pingan.com.cn/paim/iknow/index.html

2.

Bitcoin is a kind of e-cash similar to e-mail. Both parties need "bitcoin wallet" similar to e-mail and "bitcoin address" similar to e-mail address

just like sending and receiving e-mail, the remitter will pay bitcoin directly to the other party according to the recipient's address through the computer or smart phone. The following table lists some websites that download bitcoin wallets and addresses for free

a bitcoin address is a string of letters and numbers about 33 bits long, always starting with 1 or 3, such as ""

bitcoin software can generate address automatically, and it does not need to exchange information online when generating address, so it can be offline. More than 2 bitcoin addresses are available

figuratively speaking, there are about two grains of sand in the world. If there is an earth in each grain of sand, then the total number of bitcoin addresses far exceeds the number of all the sand on all these "earths"

extended materials:

bitcoin is introced as follows:

bitcoin has its own technical advantages in blockchain digital currency. Bitcoin has four main characteristics: no centralized issuer, limited total amount, no geographical restrictions and anonymity. Although bitcoin is called "currency", because it is not issued by the monetary authority, it does not have the monetary attributes of legal compensation and mandatory

is not a real currency. In nature, bitcoin should be a specific virtual commodity, which does not have the same legal status as currency, and can not and should not be used as currency in the market

3. 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.

4.

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 />

5.

Transaction mode of bitcoin

bitcoin is e-cash similar to e-mail, and both parties need "bitcoin wallet" similar to e-mail and "bitcoin address" similar to e-mail address. Just like sending and receiving e-mail, the remitter pays bitcoin directly to the other party through a computer or smart phone according to the recipient's address. The following table lists some websites that download bitcoin wallets and addresses for free

a bitcoin address is a string of about 33 characters long, consisting of letters and numbers, always starting with 1 or 3, such as & quot& quot; Bitcoin software can generate address automatically, and it doesn't need to exchange information online, so it can be offline. More than 2 bitcoin addresses are available. Figuratively speaking, there are about two grains of sand in the world. If there is an earth in each grain of sand, then the total number of bitcoin addresses far exceeds the number of all the sand on all these "earths"

the bitcoin address and private key appear in pairs, and their relationship is just like the bank card number and password. A bitcoin address is like a bank card number, which records how much bitcoin you have on it. You can generate bitcoin address at will to store bitcoin. When each bitcoin address is generated, a corresponding private key of the address will be generated. This private key proves that you have ownership of the bitcoin at that address. We can simply understand the bitcoin address as the bank card number, and the private key of the address as the password of the corresponding bank card number. Only when you know the bank password can you use the money on the bank card number. Therefore, please keep your address and private key when using bitcoin wallet

after the transaction data of bitcoin is packaged into a "data block" or "block", the transaction is initially confirmed. When a block is linked to a previous block, the transaction is further confirmed. After six block confirmations in a row, the transaction was irreversibly confirmed. Bitcoin P2P stores all transaction history in a "blockchain.". The blockchain continues to extend, and once new blocks are added to the blockchain, they will not be removed. Blockchain is actually a distributed database composed of a group of scattered client nodes and all participants, which is a record of all bitcoin transaction history. Nakamoto predicts that when the amount of data increases, users hope that not all the data will be stored in their own nodes. In order to achieve this goal, he uses the hash function mechanism. In this way, the client will be able to automatically eliminate those parts that it will never use, such as some very early bitcoin transactions

6. 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 />

7. The concept of bitcoin was first proposed by Nakamoto on November 1, 2008, and was officially born on January 3, 2009. According to the idea of Nakamoto, the open source software is designed and released, and the P2P network on it is constructed. Bitcoin is a virtual encrypted digital currency in the form of P2P. Point to point transmission means a decentralized payment system. Fire coin network, okcoin and coin security network are the three major bitcoin trading platforms in China. Due to the high risk of bitcoin trading, it is recommended to choose carefully for users with immature investment experience

warm tips: the above explanations are for reference only, without any suggestions. There are risks in entering the market, so investment should be cautious. Before making any investment, you should make sure that you fully understand the nature of the investment and the risks involved in the proct. After a detailed understanding and careful evaluation of the proct, you can judge whether to participate in the transaction
response time: January 29, 2021. Please refer to the official website of Ping An Bank for the latest business changes
[Ping An Bank I know] want to know more? Come and see "Ping An Bank I know" ~
https://b.pingan.com.cn/paim/iknow/index.html

8. Bitcoin uses a number of technologies, more than one, mainly distributed P2P technology, cryptography technology and so on
it is recommended to search bitcoin white paper for more information.