Overview
- Fhenix launched the CoFHE coprocessor into production on Wednesday, October 21, 2026, opening mainnet use to five allowlisted retail dApps while keeping public testnets available to all developers.
- The system runs heavy fully homomorphic encryption work off-chain and posts encrypted outputs back to Ethereum and Arbitrum so contracts can use private data without moving to a separate chain.
- Developers can integrate CoFHE with a single-line Solidity import to call the coprocessor from existing EVM contracts and keep interoperability with current tooling and infrastructure.
- Fhenix also introduced a Dual-Mode Token Standard that lets users switch a token balance between public and private modes in one transaction without bridges or wrapping.
- The project cites ACM CCS 2025 research for a threshold decryption method claiming large throughput and latency gains, and it strengthened FHE expertise with the July 2026 Sunscreen team acquisition after raising $22 million in 2023.