Starknet Launches Block-Sized Proofs, Proving 1.1 Billion L2 Gas in One Transaction

Starknet block-sized proofs went live on mainnet on November 11, 2026, letting applications prove up to 1.1 billion L2 gas of computation in a single transaction. StarkWare, the team behind the Starknet (STRK) network, said developers can now run complex logic offchain and pay only to verify the proof, according to the StarkWare announcement.

How Starknet Block-Sized Proofs Work

Starknet is a layer-2 network built on Ethereum that uses STARK proofs, a form of zero-knowledge proofs, to compress large computations into compact proofs. Block-sized proofs extend that idea to a full block of work. One transaction can cover up to 1.1 billion L2 gas, and the network checks the result with a single proof instead of re-running the computation. The heavy execution happens offchain. The name comes from the scale of the work covered: about the amount of computation a full Starknet block can contain. Until now, applications proved smaller batches of work in each transaction.

What Changes for Developers

Applications pay for the proof rather than for the full execution. StarkWare says this lowers costs for teams building complex logic, such as matching systems or risk engines that are too expensive to run entirely onchain. Block-sized proofs are live on the Starknet mainnet now. Apps that adopt the feature can bundle far more computation into each transaction they submit. StarkWare, the company behind the network, develops the STARK proving technology the chain runs on.

For users, transactions work the same as before. The change sits at the application and prover level, where one proof can now settle a much larger batch of computation. No token or wallet migration is part of the rollout.

What to Watch Next

The metric to watch is adoption. If more Starknet applications move heavy logic offchain and settle it with block-sized proofs, complex operations get a cheaper path to verification. Developers building on Starknet can test the new mode on mainnet immediately. Traders can follow network activity on the Starknet price chart as the new proving mode sees its first real applications.