Fhenix Launches Encrypted Computing on Ethereum and Arbitrum

Fhenix deployed its confidential computing infrastructure on the Ethereum and Arbitrum mainnets on Oct. 21, 2026, enabling smart contracts to execute operations using encrypted data without revealing underlying details. The launch introduces CoFHE, a fully homomorphic encryption (FHE) coprocessor engineered to protect sensitive information such as trading strategies, asset balances, and account positions, according to CryptoNews.

Encrypted Infrastructure for Onchain Finance

The CoFHE coprocessor handles resource-intensive encrypted calculations offchain before delivering the resulting computations back to smart contracts on Ethereum and Arbitrum. Fhenix stated that the coprocessor uses dynamic throughput to adapt to processing demand rather than relying on fixed processing speed constraints.

To simplify developer integration, Fhenix implemented a Solidity import feature alongside encrypted data types designed to mirror standard smart contract variables. The deployment also features a dual-mode token architecture, allowing token holders to toggle balances between public and confidential modes within a single transaction, bypassing the need to wrap tokens or transfer them across bridges.

“When I started Fhenix three years ago, I couldn’t have imagined how far it would take us,” said Guy Zyskind, founder of Fhenix. “CoFHE is now live on Ethereum and Arbitrum mainnet, with competitive performance and a UX that’s simple for any builder who wants privacy in their dApp.”

Ecosystem Partners and Institutional Focus

The mainnet release debuted with two initial design partners: Fluton, which is constructing a cross-chain confidentiality engine using encrypted intents, and Alpha Engine, an onchain finance network where strategists compete for liquidity using encrypted strategies. Fhenix confirmed that both projects completed technical and security assessments prior to launch, while Consensys Diligence audited the system's smart contract infrastructure.

“Confidentiality is one of the biggest barriers between institutions and public blockchains,” said Steven Goldfeder, co-founder and CEO of Offchain. “They need to keep positions and strategies private, and until now that meant giving up the composability that makes onchain markets worth using.”

Fhenix plans to deploy three additional decentralized applications on CoFHE during the fourth quarter of 2026, while working with Tandem on a confidential stablecoin. The company also announced plans to reveal two institutional partnerships in the coming weeks and is participating in the Colosseum hackathon to evaluate confidential application demand on Solana.

Key facts

• CoFHE coprocessor launched on Ethereum and Arbitrum mainnets on Oct. 21, 2026.
• Enables smart contracts to execute offchain encrypted computations without revealing balances or strategies.
• Features a dual-mode token architecture allowing single-transaction toggles between public and private modes.
• Security audit completed by Consensys Diligence alongside initial design partners Fluton and Alpha Engine.