Common Bitcoin privacy mistakes include address reuse, careless UTXO consolidation, public receipt sharing, and assuming a token swap erases input history.
Reusing receive addresses
Repeated payments to one address create an obvious public cluster and can reveal cumulative receipts without any heuristic analysis.
Combining unrelated UTXOs
One transaction spending several outputs may suggest that one wallet controlled them. Wallet coin selection affects which histories meet.
Misreading change
Sending all wallet funds or later merging change can expose relationships that were less obvious at deposit time.
Confusing conversion with erasure
Swapping BTC changes the destination asset or chain, but the deposit still references its previous outputs. Keep claims limited to the route’s actual effect.
How to read the evidence
Bitcoin analysis should follow actual UTXOs rather than an account-style balance narrative. Record which outputs were selected as inputs, which new outputs were created, how fees changed the total, and what later transactions spent those outputs. Change and common ownership may require heuristics, while the input-to-output references are explicit. A cross-asset route begins after those public Bitcoin facts already exist.