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      LayerZero Research Achieves Formal Verification of Jolt Bytecode Expansion

      LayerZero Research has successfully completed the formal verification of the bytecode expansion for Jolt, its zero-knowledge virtual machine (zkVM) designed for RISC-V architecture. This verification process, which took approximately 2.5 months, involved the use of the Lean theorem prover to ensure the correctness of 60 out of 67 RISC-V instructions, marking a significant milestone in the project's development.

      Formal verification serves as a mathematical proof of software correctness, ensuring that the code behaves accurately under all conditions rather than just specific scenarios. The verified component, bytecode expansion, is crucial as it transforms raw RISC-V instructions into Jolt's internal representation, which is essential for generating reliable zero-knowledge proofs. If this transformation is flawed, it could compromise the integrity of all subsequent proofs built on it.

      The verification utilized Lean, a formal theorem-proving assistant, to compare the bytecode expansion against a trusted RISC-V reference model known as LeanRV64D. While 60 instructions were fully proven, the remaining seven could not be verified due to specific edge cases, which the team has documented in a published paper. Notably, AI tools such as Claude and Codex were employed to expedite the proof generation process, with human engineers providing critical definitions and templates.

      Jolt's development is rooted in research from a16z crypto, which has previously conducted formal verification on related components. LayerZero has further advanced Jolt by integrating it into their Zero chain, enhancing it with GPU acceleration and post-quantum safety features. The broader goal of LayerZero's project is to achieve full correctness of the Jolt zkVM, with bytecode expansion verification being one of several sequential phases in this ongoing effort.

      © 2026 KLEA News. All Rights Reserved. This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.

      Source: KLEA News

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