← Aptos & Core Move theorytheory 0/10 · 0%

level 1

Curious · 0 XP

streak

perfect

badges

100 XP to Apprentice

Security · hard

5. The Move Prover (Formal Verification)

Proving mathematical correctness of smart contracts.

1 min read2 questionsup to 50 XPtopic 5/10

Read in another language

AI translates the explanation and quiz text while preserving code and answer scoring.

The Move Prover (`move prove`) allows developers to write formal specification blocks (`spec fun`, `ensures`, `requires`, `aborts_if`). It mathematically proves that code conforms to specifications across all possible inputs using automated SMT solvers.

move
spec transfer {
    aborts_if balance < amount;
    ensures balance == old(balance) - amount;
}

How to study this topic

1. Read the explanation once end to end, skipping the code.
2. Re-read the code snippets and say out loud what each line does.
3. Answer the quiz without scrolling back — that is the real check.
4. Read every explanation, even for the answers you got right.

Scoring

· Up to 30 XP from quiz accuracy.
· +15 XP for a perfect first attempt.
· +5 XP while a 3-day streak is running.
· 75% or higher marks the topic complete.

Check your understanding

1. What is the Move Prover?
A formal verification tool that mathematically proves code correctness against specificationsA test runner like JestA gas estimatorA compiler optimizer
2. What does an 'ensures' clause specify in a Move spec block?
A post-condition that must be true after function executionA pre-conditionAn abort ruleA type definition

Badges

First light

Pass your first topic

Sharp shooter

3 perfect first-try quizzes

On a roll

Study 3 days in a row

Week warrior

Study 7 days in a row

Grinder

Earn 500 XP

Deep diver

Earn 1500 XP