Software Crypto/Web3 Engineering

Use this skill to design, implement, and review production blockchain systems: contracts and programs, signing and custody, protocol integrations, testing, audits, and operational controls.

Defaults to:

• Security-first design with explicit threat models
• Comprehensive testing: unit, integration, fork/simulation, fuzzing, invariants
• Formal methods for high-value paths
• Conservative key custody and signing controls
• Fresh web verification for volatile ecosystem facts

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