LayerZero Unveils Akita for Post-Quantum Zero-Knowledge Proofs

LayerZero has introduced Akita, a lattice-based cryptographic scheme that a16z crypto has integrated into its Jolt prover. The company states this integration reduces zero-knowledge proof sizes to between 65 and 80 kilobytes.

LayerZero’s Announcement

In a blog post on September 9, LayerZero, an interoperability firm, announced Akita, describing it as the first production-ready lattice-based commitment scheme for zero-knowledge proving systems. LayerZero claims to have developed the scheme with researchers from Carnegie Mellon University and the University of Southern California.

Akita addresses one component of a proving system: it commits to a computation record and then verifies its correctness to an external party. a16z crypto re-engineered its open-source Jolt virtual machine to incorporate Akita, releasing it as Lattice Jolt. This replaced Dory, the elliptic-curve scheme previously used by Jolt. 

LayerZero and a16z crypto assert that proofs now range from 65 to 80 kilobytes, a significant reduction compared to the 200 kilobytes or more required by hash-based systems.

Justin Thaler and three colleagues at a16z crypto argued that lattice mathematics surpasses hash-based designs in both speed and size. Akita is built upon Module-SIS, a problem that NIST has already standardized for post-quantum signatures and key exchange. The specific parameter sets, security level, and verification costs have not been disclosed. LayerZero also notes that the current build is not yet fully zero-knowledge, a property essential for privacy applications.

Current and Future Applications

Evidence indicates Akita is operational within a16z crypto’s open-source Jolt prover. It links to Zero, the blockchain LayerZero is developing towards mainnet, which has not yet launched. The report does not confirm that Akita is currently deployed in LayerZero’s production cross-chain messaging. Therefore, this represents a released tool and a research outcome.

This development aligns with a wider industry initiative. Ethereum developers have set December 2029 as their target for a quantum-resistant base layer, mirroring goals at Google, Cloudflare, and Microsoft. As no cryptographically relevant quantum computer exists yet, these are preventative measures. 

In Europe, policymakers are drafting a separate Quantum Act focused on industry rather than cryptography, according to a LinkedIn post from Greek Quantum Gate. This provides policy context but does not verify Akita’s figures. Should the 65KB figure be independently verified, it could significantly reduce cross-chain overhead, though the provided material does not yet establish this.