Modeling Cross-Chain Completion States

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Ethereum finality takes about 15 minutes under normal conditions, but a finalized source transaction still does not prove that the destination asset arrived. If you are wiring cross-chain execution into an application, your completion state must reflect the destination chain’s evidence, not just the wallet’s successful source receipt. A user who deposits on Ethereum and expects an asset on Optimism needs a clear answer when the first transaction is confirmed but the second is still pending. A transfer is complete when the expected destination-side effect has occurred and meets your application

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