Redefining
Interoperability

The Light Client Layer for The Next Generation of Trustless Interoperability.

Light clients for every chain. Universal verification, on demand.

Light Clients Before Bankai

Complex infrastructure and high costs are limiting adoption of current ZK light clients: Custom deployments are needed for every chain while proofs need to be constantly verified onchain.

Bankai Stateless Light Clients

Bankai Stateless Light Clients sync offchain, cut ongoing transaction costs, and verify Groth16 proofs on demand, enabling inexpensive, lean interoperability across chains with no custom deployments.

A new era

Bankai: The Light Client Layer

We’re starting with Ethereum: building a stateless light client for both the execution and beacon chain.

But our vision is much bigger:
One proof layer, spanning many chains. Trustless interoperability that’s simple, universal, and built to scale.

• Universally deployable
• Lightweight
• Cost-efficient

Deterministic
by Design

We don't create consensus, we compress it. Each Bankai proof is a deterministic result of a chain's finalised history. This creates a single, canonical proof of truth that can be verified anywhere, instantly—no extra checks required.

Technology

Tech Stack

Proving System

Cairo + S-Two = 💚

Cryptography

Garaga: efficient cryptography in Cairo

ROADMAP

On the Horizon

In Progress

Ethereum Light Client Release

Coming Up

SDK + Tooling