Introducing Airbender Prime

Airbender Prime is introduced as the first Ethereum prover, to the authors' knowledge, to demonstrate real-time proving on a single GPU. 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, and every block finished in under 12 seconds. The prover uses hash-based STARKs with BLAKE2s hashing, is built on the open RISC-V standard, and includes a standalone verifier. It also leads ETHproofs' public leaderboard on reported average proving time, GPU efficiency and cost.