Fhenix has deployed its confidential computing technology into the Ethereum and Arbitrum production environments, enabling smart contracts to process encrypted information without directly exposing underlying data.
On October 21, 2026, the company announced the launch of its mainnet and simultaneously released the production version of its fully homomorphic encryption (FHE) coprocessor (CoFHE). This infrastructure is designed to enable decentralized applications to perform operations involving sensitive information while maintaining the confidentiality of balances, positions, and trading strategies.
This launch attempts to address a challenge that blockchain applications have long faced: on public networks, transaction and contract activities are usually widely observable, which makes it more difficult for financial services that rely on private information to use such networks.
Fhenix positions this technology as a confidential decentralized finance and tokenization infrastructure. The company states that current privacy restrictions are hindering a potential tokenization opportunity worth up to $1.5 trillion.
CoFHE How to Handle Encrypted Data
CoFHE will first perform computationally intensive encryption operations off-chain, and then return the results to the smart contract on Ethereum and Arbitrum. According to Fhenix, its dynamic throughput will be adjusted according to demand, rather than restricting the application to a pre-set processing rate.
The company also attempts to simplify the implementation methods for developers. Their approach involves using Solidity to import and encrypt data types, with the goal of making them function just like ordinary variables, allowing developers to incorporate confidentiality features into the existing smart contract development process.
Another part of what is released this time is the dual-mode token architecture of Fhenix. This architecture allows token holders to switch their balance between public mode and confidential mode within a single transaction, without the need to wrap assets or transfer them through cross-chain bridges.
Fhenix indicates that since the tokens remain on the original blockchain, this approach is designed to maintain compatibility with existing wallets, exchanges, and decentralized financial protocols.
"Three years ago, when I founded Fhenix, I couldn't have imagined that it would bring us to where we are today," said the company founder Guy Zyskind. " CoFHE is now live on both Ethereum and Arbitrum mainnets, offering competitive performance and a user experience that is very simple for any developer who wishes to add privacy features to their dApp."
Zyskind also indicates that Fhenix is collaborating with Tandem to develop a confidential stablecoin, however, the announcement did not provide any more details regarding the development progress or release timeline.
Fluton and Alpha Engine make their debut as design partners
This mainnet launch includes two initial design partners, whose applications demonstrate different uses of confidential computing.
Fluton is building a confidentiality engine for cross-blockchain, application, and asset interactions, utilizing encrypted intentions. Alpha Engine is developing a confidential network for on-chain finance, where policy makers can submit encryption strategies and compete for liquidity without disclosing their transaction methods.
Fhenix indicates that both of these projects have completed technical and security audits before going live.
Before its release, the system also underwent an audit by Consensys Diligence. Comments in the announcement pointed out that when evaluating systems such as smart contracts that handle information they cannot directly read, additional security factors need to be considered. However, the materials provided did not specify the name or position represented by this individual, Consensys Diligence.
Institutional adoption remains the key goal.
This launch comes at a time when Fhenix is seeking to make public blockchain infrastructure more suitable for applications that require financial confidentiality.
Offchain, co-founder and CEO, Steven Goldfeder, stated that the organization has always faced a dilemma: either protect sensitive financial information or gain the composability of the public blockchain market.
Goldfeder says, "Confidentiality is one of the biggest barriers between institutions and public blockchains. They need to keep their positions and strategies secret, and in doing so, it means giving up the composability that would make the on-chain market truly useful."
He added that this launch on Arbitrum provides developers with a way to pursue both confidentiality and composability within that ecosystem.
Fhenix plans to expand the application base of its network in the coming months. In the fourth quarter of 2026, three more decentralized applications are scheduled to be launched on CoFHE, and the company expects to announce two institutional partnerships in the coming weeks.
The team is still participating in the Colosseum hacker conference to assess the demand for confidential applications on Solana, which may extend their exploration of cryptographic computing from Ethereum-compatible networks to a broader range.
