Bitcoin transaction verification process

4.

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

5. No, the transaction that belongs to you, that is, your utxo will be saved to your bitcoin wallet file, and each payment will be found from your wallet database. If you lose the contents of your wallet, you can use your key information to access the service node to retrieve your utxo. If you lose the key, don't worry.

6. 1. In Taobao transaction, the buyer pays first. After the transaction amount in the game is completed, the buyer confirms the transaction and the seller can collect money. Taobao will ask the buyer to fill in the ID number and name of the game currency
2. When dealing in the game, take a screenshot of the transaction process, and note that the ID number of the transaction should be consistent with the ID number of the buyer
3. If the buyer refuses to pay with the game currency, then pass the screenshot to Taobao company, and there will be a notarized ruling Some games have their own trading platform, for example, mhxy has treasure Pavilion. You can buy and sell game currency through this platform, but the game Association will charge a handling fee.

7. First of all, you need to register an online wallet. I'm using blockchain. I think it's OK
search the Internet and enter the email, password and verification code to confirm. Get the wallet address through email verification, and get the bitcoin address after login (the address that someone sent you bitcoin)
I have tested the following methods, and you can really get bitcoin for free. Most of the websites are English websites. Don't worry, it's very easy to register
1. Lottery method
freebitco.in/? R = 51714

1. New user registers new user, enters wallet address, password confirmation password, email verification, enters verification code, and clicks sign up to register
2. Have an account has an account. Enter the address of the bitcoin wallet and the newly registered password to log in
enter the verification code and click roll to win the lottery
the reward is divided into several levels. According to the number you shake, the reward will be given immediately, up to 0.2 bitcoin. Once an hour, you can win a lottery, 0.00005btc can withdraw cash, and you can withdraw it by shaking several times.
2. Click advertisement
1, index | BTC clicks
Click sign up in the upper right corner to register an account, fill in the account name, password, confirmation password, e-mail, address of your bitcoin wallet and verification code, and then click sign up to register. Need to go to your email and click the link to verify
Click login, click surf ads in the navigation bar, click ads, update from time to time, and a new website will appear after clicking. You need to see the verification code in about 10 seconds and enter it. Relatively stable income, click a few times a day, you can withdraw soon
2. Coinad - free bitcoins
this also needs to be registered. In the navigation, click my account, new account, enter the user name, email address, password, confirmation password, year of birth, bitcoin wallet address, verification code, consent in turn, and click sign up to verify the email
after logging in, click View ads to display the advertisement, and then click to enter the verification code.

8. In fact, floor trading is often referred to as currency trading. Download an okex app, first enter the legal currency trading, buy usdt, and then go to the currency trading, and use usdt to buy bitcoin. If you don't understand, you can ask me directly

9. Bitcoin system uses asymmetric encryption to improve transaction security. This is what people from Yingfu College of Finance and economics told me. There was a friend there at that time

in the process of information encryption and decryption, different keys are used. Only the corresponding public key can be used for decryption. Owning the private key is equal to owning the ownership of bitcoin

similarly, bitcoin users also need to pass authentication to ensure the ownership of their own cryptocurrency assets.

10. Generally, bitcoin is held / traded on the exchange
after the Hufu exchange is opened, there is a registration button in the upper right corner. If you need to invite me to sign up, please contact me.