Ethereum Foundation requires zkEVM proof sizes under 300KiB and bans recursive wrappers that rely on trusted setups.

Quotes that support claims

Proofs must meet strict “real-time” benchmarks, including 10-second latency for 99% of blocks, 128-bit security (100-bit minimum at launch), proof sizes under 300 KiB, and the ability to run on hardware costing no more than $100,000 and using less than 10 kW.

Proof size should remain under 300KiB and must not rely on recursive wrappers that use trusted setups