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Bitcoin Cryptocurrency Mastering Development

Handling “dead” (double-spent) transactions in my mempool

Say I receive transaction A and it is in my node’s mempool and unconfirmed.

Then a block gets mined directly, which spends one of transaction A’s inputs, rendering transaction A invalid.

What can I expect my node to respond with, when I ask: getrawtransaction <transaction A's txid>?

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