Bitcoin one private key multiple transactions

1. Ah, the transaction logic of bitcoin is generally based on a principle of a blockchain, and then as we say, it is a buy and buy out of content

2. 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

Internet search: "sister coin teaches you bitcoin" or "sister coin" find me, share more exquisite content ~!

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. Each person's wallet has more than one bitcoin address, and each bitcoin address represents a certain number of bitcoins. The bitcoin address is generated through a public key hash (rpiemd + Sha), and the public key is generated by the private key through elliptic curve (ECC). The private key is kept in the bitcoin wallet and should not be disclosed. The public key, together with the bitcoin address, needs to be publicly released through transaction records ring payment transactions, and the effectiveness of payment transactions is verified by the blockchain system.

5. Bitcoin is a hot topic recently. It's a way to make money like lottery, but its appreciation and decline are a bit serious, so I don't mind playing with it.

6.

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

7. Theoretically, it is possible, but the current human computer technology does not achieve such high performance, therefore, it is almost impossible to use traditional technology to crack. With the development of quantum technology, the current encryption technology is likely to be completely cracked, including bitcoin algorithm, RSA encryption and so on.

8.

There is no limit on the total amount of use, but there is a limit in theory. It depends on the number of public key digits. A simple high school permutation can calculate the number (an astronomical number); A public key is a very good random number generator. Under the restriction of long enough public key, it is impossible to have plicate public key in theory

the following is the calculation comparison of different length keys in intercepted professional books

9. 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.

10. We can't study this thing. It's all done by those digital scientists. We only know how to buy or sell it. If it's stolen by others, it's not caused by ourselves. For example, if you're in the exchange, you can get compensation. If there's a wallet, it's your own business. No one can steal it. Only you know the private key