Developers aim to eliminate the replace-by-fee feature, deemed unnecessary and a risk to privacy.
Bitcoin developers are considering the removal of the replace-by-fee (RBF) signaling from wallet software, as it has become redundant with the adoption of full-RBF as the standard policy for transactions. Previously, this feature allowed users to indicate their intention to replace a transaction with a higher fee to expedite its processing. However, the network now treats all transactions as replaceable by default, making this optional signaling obsolete.
Retaining the legacy RBF signal creates unnecessary on-chain markers that can reveal which wallet software was used for the transaction. To enhance user privacy, developers propose adopting a unified default input sequence number, likely the prevalent MAX-2, to make transactions from different wallets appear similar.
As the developers work on this change, they face challenges in ensuring that the removal of the replace function does not lead to varying on-chain visibility, which could compromise user privacy. According to community member Murch, eliminating this signal is not as simple as removing a sticker; it requires careful consideration of how each wallet manages input sequences. With around 75% of transactions currently using a specific code, aligning with the common practice is seen as the best strategy for maintaining privacy.
