Ethereum Layer 2 network ZKsync has introduced Airbender Prime, a new zero-knowledge proof system that the company describes as the first Ethereum prover capable of generating proofs in real time on a single GPU. Zero-knowledge proofs let a verifier confirm that a computation was carried out correctly without re-executing it — the mechanism Layer 2 rollups use to cryptographically guarantee their state transitions to Ethereum. The launch lands amid an industry-wide race to make cryptographic verification of blockchain state both faster and more broadly accessible.

Post-quantum security sits at the core of the design. Rather than relying on elliptic curve pairings, which are vulnerable to quantum computing attacks, the prover uses hash-based STARKs assembled from three cryptographic components: GKR sumcheck protocols, WHIR polynomial commitments, and BLAKE2s hashing. For proofs that settle on Ethereum mainnet, the system will employ Keccak-256-based commitments — matching the hash function Ethereum itself uses — in place of the widely used BN254 pairings. The prover is also built on the open RISC-V instruction set standard, which ZKsync positions as critical for transparency and interoperability.

In internal evaluation, a single NVIDIA RTX PRO 6000 Blackwell GPU generated proofs for 7,200 consecutive Ethereum mainnet blocks, completing 99% of them in under 10 seconds each and every block in under 12 seconds. For context, Ethereum mainnet produces blocks on a roughly 12-second cadence. Notably, these figures include witness preparation time, a step often excluded from proving benchmarks that can materially inflate real-world performance claims. Airbender Prime currently leads the ETHproofs public leaderboard — where teams post real-time proving results for Ethereum mainnet blocks — in reported average proving time, GPU efficiency, and cost, with live two- and four-GPU configurations also available.

— ZKsync (@zksync) October 13, 2026

Lowering the Barrier for Verifiable Finance

The technical milestone carries implications beyond raw speed. By cutting the hardware requirements for proof generation down to a single consumer-grade GPU, ZKsync aims to make independently verifiable infrastructure practical for a wider range of institutions and operators, rather than only well-resourced proving farms. The company frames this as a response to an emerging security landscape in which AI is accelerating both the discovery and the exploitation of software vulnerabilities. Under its vision, requiring ZK proofs for ledger updates would create a publicly verifiable layer of protection: even if an execution server were compromised, no update violating the ledger's encoded rules could pass verification.

Airbender Prime also includes a standalone verifier, allowing third parties to confirm proofs independently — a feature aligned with Ethereum's stated ZK-centric roadmap. ZKsync indicated that Airbender Prime is the foundation for further announcements to come, positioning real-time, post-quantum-safe proving as a building block toward a financial system in which trust is backed cryptographic proof rather than institutional reputation alone. With independent proof verification and a public leaderboard tracking results, the performance claims behind single-GPU, post-quantum proving sit in the open for outside scrutiny.