Fhenix Adds Base Support to CoFHE — Expanding Privacy to Ethereum L2

At Fhenix, our mission has always been simple: bring encryption to Ethereum and make privacy usable.

Today, we’re taking another major step, CoFHE, our Fully Homomorphic Encryption coprocessor, is now live on Base.

This marks the first FHE coprocessor running on Base, unlocking encrypted computation and private smart contracts directly on one of Ethereum’s most active L2s.

Why Fhenix Brought CoFHE to Base: A Shared Vision for Onchain Privacy

Base has been pushing the boundaries of what’s possible for open, secure, and human-friendly onchain experiences.

We share that vision deeply.

As Jesse Pollak, Head of Protocol at Base, said:

“Privacy must be a core part of the global onchain economy”.

Adding Base support to CoFHE brings that future closer, giving builders and users privacy tools that work at production speed, directly within Base’s thriving ecosystem.

What Fhenix Unlocks: From Public-by-Default to Confidential-by-Design

Until now, DeFi on Base — like most of Ethereum — was public by default. Every trade, balance, and strategy was visible to everyone.

With CoFHE, we’re changing that.

For DeFi users, this means:

• Front-running resistance and fair execution
• Confidential trading and intent coordination
• A smoother, safer user experience with privacy built in

For builders, it means:

• The ability to write private smart contracts
• Encrypted logic that’s verifiable and performant
• A foundation for building confidential DeFi, private auctions, and encrypted order books

This is what we call privacy that works not theoretical, but live and composable.

Encrypted Apps on Base: Real Examples of Private DeFi

You can already explore FHE in action on Base:

• Equle – a privacy-preserving calculator that demonstrates how onchain encrypted computation works.
• Fhenix402 – inspired by the x402 payment protocol, this app showcases confidential micropayments and encrypted access logic.

These apps are early proofs that encrypted computation isn’t a concept — it’s a new design space.

Start Building Private Smart Contracts on Base with Fhenix CoFHE

The Base integration means developers can build private dApps today using Fhenix’s CoFHE stack.

Write encrypted logic, test confidential flows, and start exploring privacy-native coordination.

Get Started: CoFHE Docs, Bounties, and Builder Programs

We’re also launching CoFHE bounties and builder programs soon — designed to help Base developers ship real encrypted use cases, from intent coordination to confidential DeFi primitives.

Build your first encrypted mini app with Fhenix → https://github.com/FhenixProtocol/cofhe-miniapp-template

Play Equle → https://farcaster.xyz/miniapps/IhMOjv1auNOd/equle

The Future of Encrypted Ethereum Starts on Base

The next evolution of Ethereum privacy starts here on Base.

Encrypted logic, usable privacy, and the infrastructure to make Private DeFi real.

This is how we unlock Ethereum’s $100T future : safely, privately, and for everyone.