I've been seeing all this information around zero-knowledge blockchains or layer twos like zkSync.

Is my information private on these chains/L2s?

1 Answer 1


Not necessarily.

In the case of zkSync, the "zero knowledge" aspect of the chain refers specifically to the way the data is rolled up. ZkSync uses a "zero-knowledge proof" to send a bunch of transactions from it's L2 -> the L1 (Ethereum), but the chain itself has public data.

There are some chains like aztec that are working on a layer two that is fully private.


A "zk chain" doesn't necessarily mean that the blockchain is private, it's often a shorthand way of referring to how the transactions are rolled up to the L1.

To learn more about L1s vs L2s, you can read here.

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