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merge bitcoin#24310: docs / fixups from RBF and packages
RBF and SegWit-specific changes have been excluded from this backport. excludes: - 5ae187f8761f5f85a1ef41d24f75afb7eecf366f - d35a3cb3968d7584c7d5c42b121a80f34ea656bf
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@ -47,3 +47,16 @@ test accepts):
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* Packages must be child-with-unconfirmed-parents packages. This also means packages must contain at
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least 2 transactions. (#22674)
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* Transactions in the package that have the same txid as another transaction already in the mempool
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will be removed from the package prior to submission ("deduplication").
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- *Rationale*: Node operators are free to set their mempool policies however they please, nodes
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may receive transactions in different orders, and malicious counterparties may try to take
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advantage of policy differences to pin or delay propagation of transactions. As such, it's
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possible for some package transaction(s) to already be in the mempool, and there is no need to
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repeat validation for those transactions or double-count them in fees.
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- *Rationale*: We want to prevent potential censorship vectors. We should not reject entire
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packages because we already have one of the transactions. Also, if an attacker first broadcasts
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a competing package, the honest package should still be considered for acceptance.
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