LimeChain

LimeChain is a blockchain engineering firm founded in Sofia, Bulgaria in 2017, building protocol-level code and security hardening for foundations, DeFi protocols and enterprises. The gap it fills: cross-chain messaging, light-client verification and Substrate runtimes need teams that understand both consensus and business constraints, which generalist outsourcers rarely staff.

The method starts by defining contract invariants, then drives fuzzing and property-based testing from them, followed by manual review of every value-bearing path, static analysis and fork tests, and a rehearsed testnet deployment. Internal review is not presented as an independent audit; the team prepares evidence, coordinates the external auditor and tracks fixes. Beyond Solidity and Rust it writes Daml contracts, maintains the Zest coverage tool and the Matchstick subgraph framework, and ships Unity and Unreal packages for on-chain assets.