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4. The Move Bytecode Verifier

Compile-time and deploy-time safety verification.

1 min read2 questionsup to 50 XPtopic 4/10

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Before any Move bytecode is published or executed, the Move Bytecode Verifier performs static analysis to guarantee type safety, resource conservation (no leaking or illegal copying), and reference lifetime validity.

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1. Read the explanation once end to end, skipping the code.
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Check your understanding

1. What does the Move Bytecode Verifier verify before publishing code?
Type safety, resource bounds, reference lifetimes, and stack balanceGas balance onlyUser KYCNetwork ping
2. Can malicious bytecode bypass Move's ability constraints on-chain?
No, the on-chain Bytecode Verifier rejects invalid bytecode before deploymentYes, if written in assemblyYes, with high gasOnly on mainnet

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