Fhenix has brought its CoFHE fully homomorphic encryption coprocessor into production on the Ethereum and Arbitrum networks. The October 21, 2026 launch allows smart contracts to perform operations on encrypted data without revealing sensitive details such as account balances, trading positions or investment strategies.

The system processes intensive encrypted calculations off-chain before returning verified results to on-chain contracts. Throughput scales dynamically with demand. Developers integrate the technology through a single Solidity import and encrypted data types that behave like ordinary variables, preserving compatibility with existing Ethereum tooling and workflows.

Dual-Mode Tokens and Institutional Access

A core feature is the dual-mode token design. Users can switch an asset’s balance between public and confidential modes inside one transaction. Tokens remain on their native chain; no wrapping, bridging or separate privacy assets are required. The approach keeps liquidity unified and maintains compatibility with current wallets, exchanges and decentralized finance protocols.

Fhenix positions the infrastructure as a solution for institutional participants that require privacy on public blockchains without sacrificing composability. The company cites a potential $1.5 trillion tokenization market as a key opportunity the technology aims to support.

Offchain Labs, the developer of Arbitrum, has backed Fhenix. Goldfeder noted that the system now enables Arbitrum builders to offer both privacy and composability.

Launch Partners and Security Review

Two design partners went live with the mainnet. Fluton focuses on encrypted intents for interactions across chains, applications and digital assets. Alpha Engine provides a platform where strategists submit encrypted trading strategies to compete for liquidity without publicly disclosing their methods.

Consensys Diligence completed a technical audit of the system before deployment.

Initial mainnet access is permissioned. Applications require Fhenix team approval and an active social media presence for whitelist inclusion. Developers can continue testing on Ethereum Sepolia, Arbitrum Sepolia and Base Sepolia.

Roadmap and Further Development

Fhenix plans to deploy three additional decentralized applications on CoFHE during the fourth quarter of 2026 and expects to announce two institutional strategic partnerships in the coming weeks. The company is collaborating with Tandem, the venture arm of Offchain Labs, on a confidential stablecoin. It is also participating in the Colosseum hackathon to gauge demand for confidential applications on Solana.

Zyskind added that the team is advancing the confidential stablecoin project with Tandem and expressed anticipation for subsequent developments.

The launch marks the transition of CoFHE from test environments into production infrastructure designed for confidential computation within existing Ethereum and Arbitrum ecosystems.