Monero Unveils FCMP++ Privacy Upgrade to Vastly Expand Anonymity Set and Counter Quantum Threats

Monero launched in April 2014 with a focus on concealing users’ identities and transaction amounts, making it a key experiment in “digital cash.” Its current anonymity set is limited to 16 for each transaction, making long-term privacy protection a critical issue as blockchain analytics and quantum computing advance.

Monero recently unveiled its proposed FCMP++ upgrade, which would expand the anonymity set from 16 to about 150 million and introduce forward secrecy to reduce the risk that historical transactions could be traced if future technologies break current protections. The new architecture would also separate proofs from authorization, laying the groundwork for future Lightning Network support. As of July 20, 2026, no mainnet activation date had been announced.