New Inco Lightning Testnet on Base Sepolia

Back in March 2025, we launched Inco Lightning on Base Sepolia to give developers a way to build confidential applications. Alongside it, we released two testnet experiences—Comfy and Hangman—so users could get hands-on with onchain confidentiality that's secure, seamless, and fast. While it was live, this testnet processed 1,284,993,175 confidential computations.

Today, we're releasing an upgraded version of the Inco Lightning testnet on Base Sepolia. This version is more stable and introduces several new features for developers building confidential applications. Hangman and Comfy have also been moved to this new testnet.

What's New

The updated testnet includes:

• Attested compute – Verified computation with cryptographic attestation
• Attested decrypt – Secure decryption with proof of correct execution
• Attested reveal – Controlled data disclosure with attestation guarantees
• Voucher system – Acts as a session key, so re-encryption without triggering a MetaMask popup can be enabled
• New eaddress type – A dedicated type for encrypted addresses
• elist (beta) – Encrypted list functionality, now available for testing

Build With Us at Defy 26

We'll be at the Defy 26 hackathon on January 12th, encouraging builders to experiment with the new testnet. Join us.

Developers: Get Started

Building with onchain confidentiality has never been easier. Use your existing tools along with Solidity, and get started in minutes.

• Documentation: docs.inco.org
• Quickstart: docs.inco.org/quickstart
• Starter Hardhat template: github.com/Inco-fhevm/inco-lite-template

Need Help?

Join our Discord and head to the dev-chat channel for support or feedback on your app. You can also sign up for Builders Office Hours here to get direct guidance from the team.