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BTC 
ETH LayerZero releases Akita: Post-quantum cryptography scheme significantly reduces the scale of proof
LayerZero has released a post-quantum cryptography scheme called Akita. Currently, this solution is running in a16z Crypto's Jolt prover, reducing the size of the certification data to only 65 KB.
Core Highlights
- Akita is the first lattice-based commitment solution with production environment readiness built specifically for zero-knowledge proof systems.
- a16z Crypto reconstructed its Jolt virtual machine around Akita and released the results in the form of "Lattice Jolt".
- This upgrade increases proof speed by 2 to 3 times and reduces the memory footprint required by the prover by approximately half.
Akita scaled down quantum proof
On September 9, LayerZero announced the launch of Akita in its blog post, calling it the first primitive of its kind to be production-ready. The program was developed by LayerZero and researchers at Carnegie Mellon University and the University of Southern California.
In the certification system, Akita handles a single task: committing a calculation record and proving the correctness of the record to an external verifier. Since other components themselves have independent security, replacing this key part with a quantum-resistant version can protect the entire technology stack. With the rest of Jolt unchanged, a16z Crypto integrated Akita into its open source zero-knowledge virtual machine and released it under the name Lattice Jolt, while removing the elliptic curve scheme Dory, which it had relied on since its launch.
Today, the volume of proof data is only 65 to 80 KB, compared to 200 KB or more for almost all previously hash-based post-quantum proof systems running in production environments. This means that the scale of the proof has been reduced by a factor of 2 to 8. The relevant code has been open source, and the underlying layer of Jolt supports Zero, a blockchain project that LayerZero is building to move towards the main network.
Why does a16z Crypto favor lattice mathematics?
Justin Thaler of a16z Crypto and three colleagues pointed out that the lattice hypothesis has advantages in speed and scale compared to hash-based designs, and that hash-based paths actually imply their own assumptions. Akita is built on the Module-SIS problem, which has been standardized by the National Institute of Standards and Technology (NIST) for post-quantum signatures and key exchanges.
Elliptic curves force Jolt to operate on 256-bit fields, and the lattice structure requires only half the width to achieve a considerable level of security. Since the main time of the prover is spent multiplying these numbers, architectural optimization brings significant performance improvements. On ordinary laptops, Lattice Jolt's processing speed reaches 2 million processor cycles per second, double the previous rate of about 1 million; once Apple's graphics acceleration function is turned on, the processing speed can exceed 10 million cycles per second. In addition, memory usage dropped from approximately 300 bytes per cycle to 200 bytes.
However, there is still a gap: the build has not yet fully implemented the zero-knowledge attribute, which is a necessary feature for privacy applications.
Cryptocurrency industry competes for 2029 quantum deadline
This month, Ethereum (ETH) developers set December 2029 as a deadline for building a quantum-resistant foundation layer, which is consistent with migration goals already adopted by technology giants such as Google, Cloudflare and Microsoft.
Meanwhile, Coinbase gathered developers, custodians and hardware wallet experts at Stanford University the same week to discuss Bitcoin (BTC) signature options. Although the meeting did not agree on a single path, there is no formal timetable for the Bitcoin chain itself, forcing the Certification Systems and Infrastructure team to take the lead.
