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On-chain basics

RBF (Replace-By-Fee)

RBF lets a Bitcoin sender replace an unconfirmed transaction with a higher-fee version.

Useful to unstick a deposit. Some services wait for confirmation before crediting RBF-flagged transactions because they can be replaced.

On Swap.bz

Fine to use; the order proceeds once the replacing transaction confirms.

Related terms

Mempool

The mempool is the waiting room of unconfirmed transactions on a node; miners pick the highest-fee ones first.

Confirmations

A confirmation is one block mined on top of the block containing your transaction; exchanges wait for several before treating a deposit as final.

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