ZKsync unveils Airbender Prime, claiming first real-time Ethereum proving on a single GPU

ZKsync says Airbender Prime uses hash-based STARKs combining GKR sumcheck, WHIR polynomial commitments and BLAKE2s hashing, with L1 proofs using Keccak-256-based commitments instead of BN254 pairings. It is based on the open RISC-V standard and includes a standalone verifier for independent verification. In a single-GPU evaluation, one NVIDIA RTX PRO 6000 Blackwell proved 99% of 7,200 consecutive Ethereum mainnet blocks in under 10 seconds each, including witness preparation, with every block under 12 seconds. ZKsync says it leads ETHproofs' public leaderboard on reported average proving time, GPU efficiency and cost.

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