Which blockchain features built-in privacy measures to prevent tracing and conceal ownership and flow of illicit funds?

Monero is a privacy-focused blockchain designed with built-in features like ring signatures, stealth

addresses, and confidential transactions to obfuscate sender, receiver, and transaction amounts,

making tracing difficult.

Cardano, Polygon, and Ethereum are not designed primarily with these privacy features and have

publicly traceable ledgers, although privacy solutions may be layered on.