Bitcoin Core 24, the long-awaited but controversial upgrade was activated on Nov. 26, opening the door for the Bitcoin memory pool that will serve as a waiting room for unconfirmed transactions.
The memory pool will activate full RBF (Replace-by-Fee) logic, which is a way for nodes to either accept or refuse conflicting transactions if one transaction has a high fee.
Before this upgrade, Bitcoin Core nodes implemented the “opt-in RBF” logic, where miners replaced a conflicting transaction in the memory pool if that transaction was signaled as replaceable. The RBF standard was introduced in 2016 and activated on the Bitcoin Network through the BIP 125 update. Prior to RBF, the memory pool accepted transactions on a first-seen basis.
Meanwhile, the new release features a Full-RBF, which the Bitcoin community has debated as controversial due to fears of making zero-confirmation transactions obsolete. Besides, the majority of critics feel the new feature will encourage double-sp
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