Fhenix Goes Live on Ethereum and Arbitrum, Letting Contracts Compute on Hidden Balances

On Ethereum, a wallet’s holdings are public by default: anyone with the address can see what it owns, what it trades and when. Fhenix , a startup building privacy tools for Ethereum, said Wednesday that smart contracts on Ethereum and Arbitrum mainnet can now work with balances, positions and trading strategies that remain encrypted onchain, while the contract still enforces its rules. The company said its CoFHE coprocessor, built on fully homomorphic encryption (FHE) , is now in production on both networks. Until the launch, CoFHE ran only on public test networks.