hard20 pts · first answer countsdapp-frontendblockchain-fundamentals

Indexer shows phantom deposits

A custom indexer credits user deposits as soon as it sees a Deposit event in the latest block. Sometimes balances include deposits that never happened. What should the indexer do?

A.Poll more often so it sees events soonerB.Read only the latest block and ignore older onesC.Use logs from Etherscan instead of a nodeD.Store each block's hash and parent hash, detect reorgs and roll back affected events, and only treat deposits as final after the safe or finalized block tag

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Indexer shows phantom deposits

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