Privacy – Bitcoin Address Reuse

We talk about the privacy implications of Bitcoin address reuse.

Suppose A has to pay rent to B. Every month, A sends 1/12 BTC to B. same public address Among them, B has the private key.

a) What are A’s privacy risks, and by doing so, what are B’s privacy risks? B does not spend any Bitcoin at that address.

b) Let us consider only the first transaction from A to B. What information is publicly available?

c) And what additional information is required in subsequent transactions hidden If A and B choose to use New address for each transaction?

d) What happens if A can transfer 1 BTC to B as privately as possible, and B goes to an exchange and exchanges 1 BTC for fiat? His balance is visible on the blockchain! So why bother choosing a new address for each transaction to protect your privacy?