What a no account exchange knows about you

No account means no name, no email and no documents. It does not mean no data at all, and anyone telling you otherwise is overselling.

What an order necessarily contains

• The coins and amounts.
• The deposit address and the payout address you gave.
• The status and the transaction ids.

None of this is optional. An exchange that did not record the payout address could not pay you.

The addresses are the sensitive part

Addresses are public on the chain, but linking two of them is information that did not exist before. Swap Heaven erases order addresses on a schedule once an order has ended, which limits how long that link survives.

What you can do

Use a fresh receiving address where your wallet makes that easy. It costs nothing and keeps your swaps from stacking up against one address.