zkSync vs. Starknet comparison article
defigen.lens
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January 17th, 2023

ZkSync and Starknet are both layer 2 scaling solutions for the Ethereum blockchain, but they have some key differences.

One of the main differences is the way they handle transactions. ZkSync uses zk-SNARKs, a form of zero-knowledge proof, to validate transactions without revealing any sensitive information about them. This allows for greater privacy and security on the blockchain, as well as the ability to process transactions more quickly and at a lower cost. Starknet, on the other hand, uses a STARK-based Rollup mechanism that allows for off-chain computations to be verified on-chain.

Another difference between the two is that ZkSync supports off-chain transactions, which allows for a much higher throughput than on-chain transactions, while Starknet doesn't. This means that more transactions can be processed per second, leading to faster confirmation times and reduced fees.

ZkSync also has a rollup mechanism that enables to bundle multiple off-chain transactions into a single on-chain transaction, which further reduces the costs and increases the scalability of the system. Starknet has its own rollup mechanism which is based on STARKs, which are quite different than zk-SNARKs.

In terms of compatibility, ZkSync is compatible with existing Ethereum tools and infrastructure, making it easy for developers and users to integrate with their existing applications and wallets. Starknet is a standalone solution which is not compatible with Ethereum's existing tools and infrastructure.

Overall, both ZkSync and Starknet are promising layer 2 scaling solutions for the Ethereum blockchain, but they have different approach to scaling and different strengths and weaknesses. ZkSync uses zk-SNARKs and off-chain transactions to achieve scalability and privacy, Starknet uses STARKs and rollup mechanism to achieve scalability and security.

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