Can bitcoin record transactions

2. You can find the address, but you don't know whose it is

3. This has nothing to do with the browser, this need to go to a professional website to query, you can query. Because bitcoin transactions are recorded on the blockchain, there is no way to modify and delete them. However, Google browser is generally used
bitcoin, Ruitai coin, Laite coin, dogcoin and other digital currencies all use blockchain technology.

4. The transaction direction of bitcoin can be queried. Bitcoin transactions will be recorded on the bitcoin blockchain to find out the liquidity of bitcoin and from which wallet to which wallet. However, you only know which wallet is transferred to, and you don't know who the wallet belongs to. Bitcoin is both transparent and anonymous. Transactions and flows are public and will be recorded, but the person who trades is anonymous. Some scholars found that through the flow of bitcoin, transaction users can be found. They need to use certain technical means, and it is particularly troublesome. At present, it is only in the theoretical stage.

5. A block size of bitcoin is 1MB. There is no limit on the size of each transaction. A block can generally contain 2000-3000 transactions.

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. The bitcoin system records transaction records one by one. Multiple transaction records are packaged into a block, and each block is connected in chronological order. Every transaction in every block of the whole blockchain can be viewed by everyone. You can view it by using the "bitcoin block browser". It is not a browser software, but a website that can query bitcoin transactions.

8. Bitcoin is completely virtual, it not only has no entity, but also in essence no virtual goods can really represent bitcoin. Bitcoin is implied in the transfer records of sending and receiving coins
users can send bitcoin as long as they have a key to prove their control and unlock it with the key. And these keys are usually stored in the digital wallet of the computer. Having a key is the only condition to use bitcoin, which makes it completely in everyone's hands.

9. Right (A1, len (A1) - 1)
suppose your number is in A1.