How do vProgs interact with each other on Kaspa?

vProgs achieve synchronous composability with each other without any vProg needing to trust another. Each vProg is an independent state machine that runs its own logic off-chain and submits ZK proofs to Layer 1 for verification, so two vProgs can interact in the same transaction without either one having to assume the other is honest. For a beginner, this is significant because it allows complex multi-step applications to be built on Kaspa without introducing the trust assumptions that create risk in some other smart-contract systems.

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