Mempool

Memory pool policies. 3 proposals.

BIP 35: mempool message: Deployed. Adds a "mempool" message that lets a node ask a peer for the unconfirmed transactions it is holding. This helps lightweight wallets and freshly started nodes learn quickly about payments still…
BIP 125: Opt-in Full Replace-by-Fee Signaling: Deployed. Defines how a sender can mark an unconfirmed transaction as replaceable, so nodes will accept a new version paying a higher fee. This 'replace-by-fee' lets users speed up a transaction stuck because…
BIP 431: Topology Restrictions for Pinning: Draft. Explains 'pinning', a problem where someone can block a transaction from being replaced with a higher-fee version, which can endanger time-sensitive protocols like Lightning. It describes stricter…