Why is it useful to use new receiving addresses for new Bitcoin payments?
Correct answer
Answer D: So that payments are harder to link to one another.
Quick explanation
The blockchain is public. Always using the same address makes it easier to connect different payments.
Detailed explanation
A Bitcoin address becomes publicly visible once it is used in a transaction. If the same receiving address is reused repeatedly, those payments are obviously grouped under the same visible identifier. This makes it easier to see how often the address has been used and what amounts are associated with it.
Modern deterministic wallets can derive many receiving addresses from the same backup. A new address can therefore be used for each payment without needing a new seed phrase every time. This at least reduces the simplest form of linking based solely on repeated use of the same address and also helps keep incoming payments separate.
New addresses do not provide complete anonymity. If several UTXOs are later spent together, they can become linked again. Change patterns, KYC records held by service providers and network metadata can also provide clues. Good privacy therefore depends on several practices, not only on generating new addresses.
Example or everyday application
An exchange records a withdrawal to address X. If X is later reused for many public receipts, these payments become easier to associate with the same known recipient.
Common misconception
Many believe a new address solves every privacy problem or that KYC writes names directly into the blockchain. The explanation separates internal records from public analysis.