Blockchain is an open ledger where every transaction can be seen by anyone.
There are a number of websites, called blockchain explorers, which visualize transaction data on the blockchain. All transactions that have occurred on the blockchain are visible to the public – whoever you are or whether you have contributed or not.
By looking at the transactions on the blockchain explorer, you can find various details of the transactions, such as the time the transaction occurred, the volume and the address. However, the details of the sender’s data remain confidential because the transactions are carried out under a pseudonym which is called a Bitcoin address. That is, we cannot find out the person’s information.