21MERIDIAN 2140
52 / 104BIP125

Replace-by-fee

A policy allowing an unconfirmed transaction to be replaced by one paying a higher fee.

A policy allowing an unconfirmed transaction to be replaced by one paying a higher fee.

A policy allowing an unconfirmed transaction to be replaced by one paying a higher fee. This coordinate is placed in the wider system through its protocol, economic and historical relationships.

Understanding Replace-by-fee helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.

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Linked to related atlas coordinates

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Grounded in a source record

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Explains function and trade-offs

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Part of the open Bitcoin knowledge graph

DOC · 001BIP 125: Opt-in Full Replace-by-Fee SignalingSpecification
Reviewed 25 July 2026Source-first · No investment advice