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

  • No notification
    There are no incoming transaction notifications for this service
  • 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
  • No unconfirmed transactions
    Neither the original nor replacement transactions are shown in the transaction list. Most likely unconfirmed transactions are not supported

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 - Default send transaction screen
Sending RBF Transaction - Default send transaction screen

Sending RBF Transaction - Send transaction confirmation screen.
Sending RBF Transaction - Send transaction confirmation screen.

Sending RBF Transaction - Network fee notice details.
Sending RBF Transaction - Network fee notice details.

Sending RBF Transaction - Transaction list screen showing sent transaction. No RBF notice.
Sending RBF Transaction - Transaction list screen showing sent transaction. No RBF notice.

Sending RBF Transaction - Sent transaction details. No RBF notice. Note transaction sent without RBF flag. Transaction was not sent with RBF so no bumping available.
Sending RBF Transaction - Sent transaction details. No RBF notice. Note transaction sent without RBF flag. Transaction was not sent with RBF so no bumping available.

Receiving RBF Transaction - Abra does not show unconfirmed transactions.
Receiving RBF Transaction - Abra does not show unconfirmed transactions.

Receiving Bumped RBF Transaction - When the bumped transaction receives 1 confirmation it appear in wallet. No RBF notice.
Receiving Bumped RBF Transaction - When the bumped transaction receives 1 confirmation it appear in wallet. No RBF notice.

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

Receiving Bumped RBF Transaction - Bumped transaction details.
Receiving Bumped RBF Transaction - Bumped transaction details.