Replace-by-Fee (RBF)

An unconfirmed transaction can be replaced by another version of the same transaction that spends the same inputs. Most full nodes support this if the earlier transaction enables BIP125 signaling and the replacement transaction increases the amount of fee paid. In terms of block chain space used, this is the most efficient form of fee bumping.

Receiving support

  • Notification does not note RBF
    Notification of incoming transaction does not note that the transaction is RBF signaling
  • Received transaction not labeled replaceable in list
    Does not visually indicate that an incoming transaction has signaled RBF
  • Received transaction not labeled replaceable in transaction details
    Does not visually indicate that a received transaction has signaled RBF when viewing the transaction details
  • Shows original transaction only
    Only the original transaction shown in transaction list. Repacement transactions not shown

Sending support

  • Does not signal BIP125 replacability when sending transactions
    Does not allow sending of BIP125 opt-in-RBF transactions in the interface
  • Sent transaction not labeled replaceable in list
    Does not visually indicate that an outgoing transaction has signaled RBF
  • Sent transaction not labeled replaceable in transaction details
    Does not visually indicate that a sent transaction has signaled RBF when viewing the transaction details
  • No replacements in transaction list
    Because no transaction replacement is possible, we could not test whether original or replacement sent transactions are shown after replacement

Usability

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Sending RBF Transaction - Send transaction screen does not allow for RBF. Fee options are available. No RBF options in settings.
Sending RBF Transaction - Send transaction screen does not allow for RBF. Fee options are available. No RBF options in settings.

Bumping RBF Enabled Transaction - Transaction details screen. No RBF fee bumping supported.
Bumping RBF Enabled Transaction - Transaction details screen. No RBF fee bumping supported.

Receiving RBF Transaction - Transaction list screen. No RBF flag.
Receiving RBF Transaction - Transaction list screen. No RBF flag.

Receiving RBF Transaction - Transaction details screen. No RBF flag.
Receiving RBF Transaction - Transaction details screen. No RBF flag.

Receiving Bumped RBF Transaction - Transaction list screen does not show the bumped transaction. Only the original. Even after the new, bumped transaction received 6+ confirmations.
Receiving Bumped RBF Transaction - Transaction list screen does not show the bumped transaction. Only the original. Even after the new, bumped transaction received 6+ confirmations.

Receiving RBF Transaction - Internal database error shows conflicting bitcoin inputs. Original transaction remains unconfirmed. Ticket opened with Ledger to address. (Update - Solution was to clear cache in app)
Receiving RBF Transaction - Internal database error shows conflicting bitcoin inputs. Original transaction remains unconfirmed. Ticket opened with Ledger to address. (Update - Solution was to clear cache in app)