# ZetaChain audit contest Sherlock · L1 · 14th April 2025 · #3 A public audit contest on Sherlock (L1), completed on 14th April 2025. 0xSimao placed #3. His findings from it are not published individually. ## What Zetachain is ZetaChain is an EVM-compatible layer 1 with chain abstraction built in: universal apps deployed on it read and write state on connected chains, Bitcoin included, with observer validators watching external chains and TSS-signed transactions carrying the outbound side. ## Scope The protocol contracts on ZetaChain and connected chains: the gateways, ZRC-20 assets and the cross-chain message plumbing. ## The contest [View the contest page](https://audits.sherlock.xyz/contests/857)