What is the Difference between Starknet and zkSync


zkSync and Starknet are both layer-2 scaling solutions for Ethereum that use zk-rollups to bundle transactions off-chain and verify them on-chain using zero-knowledge proofs. However, they have some key differences in their design, features, and ecosystem.

zkSync uses zk-SNARKs as the zero-knowledge proof system, while Starknet uses zk-STARKs. This means that zkSync has smaller proof sizes and lower gas fees, while Starknet has higher transparency and security.

If you are curious about the technical details, check out "what is the difference between STARK and SNARK" for a more advanced explanation.

zkSync is EVM-compatible and uses Solidity as the programming language, while Starknet uses Cairo as the programming language and does not support EVM. EVM compatibility means that developers can easily port their existing smart contracts from Ethereum to the layer-2 network, meaning zkSync has lower barriers to entry. On the other hand, Cairo is a native and specialized language for STARK-proving general computation, which gives Starknet more flexibility and expressiveness.

Layer 2


Zero Knowledge Proofs

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