In This Article
The Fhenix platform has deployed its confidential computation technology in production on Ethereum and Arbitrum, enabling smart contracts to process encrypted information without directly revealing the underlying data.
The company announced the launch of its mainnet on October 21, 2026, alongside the production release of CoFHE, its coprocessor for fully homomorphic encryption (FHE). The infrastructure is designed to allow decentralized applications to perform operations involving confidential information while preserving the privacy of balances, positions, and trading strategies.
The blockchain launch addresses a long-standing problem with its adoption: public networks make transactions and contract activity widely observable, which can complicate their use in financial services that depend on confidential information.
Fhenix positions its technology as infrastructure for confidential decentralized finance and tokenization, identifying a potential $1.5 trillion tokenization market that is currently constrained by privacy limitations.
How CoFHE processes encrypted data
CoFHE performs resource-intensive encryption operations off-chain before returning results to smart contracts on Ethereum and Arbitrum networks. According to Fhenix, its dynamic throughput adapts to demand rather than limiting applications to a predetermined processing rate.
The company also aims to simplify adoption for developers. Its approach uses Solidity imports and encrypted data types designed to function similarly to ordinary variables, allowing developers to integrate privacy into existing smart contract development workflows.
Another element of the launch is Fhenix’s dual-mode token architecture. It allows token holders to switch balances between public and confidential modes within a single transaction, without wrapping the asset or transferring it through a bridge.
Because the token remains on its original blockchain, Fhenix says the approach is designed to preserve compatibility with existing wallets, exchanges, and decentralized finance protocols.
“When I founded Fhenix three years ago, I could never have imagined how far it would take us,” said Guy Zyskind, the company’s founder. “CoFHE is now live on Ethereum and Arbitrum mainnets, demonstrating competitive performance and a simple user interface for any developer who cares about privacy in their decentralized application.”
Zyskind also said Fhenix is working with Tandem on a confidential stablecoin, although the announcement did not provide additional details about its development or release timeline.
Fluton and Alpha Engine debut as design partners
Two initial design partners are participating in the mainnet launch, with applications illustrating different uses for confidential computation.
Fluton is developing a privacy mechanism for interactions between blockchains, applications, and assets, using encrypted intents. Alpha Engine is building a confidential network for on-chain finance, where strategists can submit encrypted strategies and compete for liquidity without revealing their trading approaches.
Fhenix says both projects underwent technical review and security verification before launch.
The system also underwent an audit by Consensys Diligence prior to launch. Comments included in the announcement highlighted additional security considerations related to evaluating systems in which smart contracts handle information they cannot directly read. However, the materials provided did not specify the name or title of the Consensys Diligence representative.
Adoption by institutions remains a key challenge
The launch comes amid Fhenix’s efforts to make public blockchain infrastructure more suitable for applications requiring financial privacy.
Steven Goldfeder, co-founder and CEO of Offchain, said that historically, institutional investors have faced the need to choose between protecting confidential financial information and accessing the composability of public blockchain markets.
“Privacy is one of the biggest barriers between institutions and public blockchains,” said Goldfeder. “They need to keep positions and strategies secret, and until now that has meant giving up the composability that makes on-chain markets attractive to use.”
He added that the launch on Arbitrum gives developers the ability to provide both privacy and composability within the ecosystem.
In the coming months, Fhenix plans to expand the network’s application base. Three more decentralized applications are scheduled to launch on CoFHE in the fourth quarter of 2026, and the company plans to announce two institutional partnerships in the coming weeks.
The team is also participating in the Colosseum hackathon to assess demand for confidential applications on Solana, which could potentially extend its encrypted computation research beyond Ethereum-compatible networks.
