Cake Wallet COO Warns Merging UTXOs Can Compromise Bitcoin Privacy

Cake Wallet’s chief operating officer has warned that a single transaction can compromise years of discreet Bitcoin activity by merging separate, private UTXOs with those tied to a user’s identity.

Speaking on the Bitcoin Rails podcast, activist Seth for Privacy emphasized the critical importance of manual UTXO management, or “coin control,” to prevent wallets from automatically combining KYC and non-KYC coins in a single payment. He noted that wallets treat all UTXOs as part of a single balance unless instructed otherwise.

Seth argued that while privacy awareness is growing in the West, a cultural shift is needed. “It has been shifting, in the last five or six years a lot of people — even in the West — are starting to think [privacy] really matters,” he said, adding that citizens may need to “feel pain” to fully appreciate its importance.

The comments come amid renewed focus on Bitcoin privacy following last year’s trial and imprisonment of Samourai Wallet developers. Seth expressed a preference for improved Bitcoin privacy over niche alternatives, stating he would be fine if Monero ceased to exist if Bitcoin’s privacy became sufficiently robust for mainstream use.