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Author: Admin | 2025-04-28
Minimum relay fee rate to help determine what unconfirmed transactions they’ll process, relay, and store in their individual memory pools. Each node gets to decide its own minimum relay fee rate, and if they receive a transaction whose fee rate is below that limit, they don’t add it to their memory pools or relay it to their other peers (although another mechanism called transaction priority historically allowed some transactions that pay a low fee to be accepted into mempools and relayed).Prior to Bitcoin Core 0.13.0, nodes didn’t tell each other what minimum fee rate they were using, which could lead to wasted bandwidth. For example, Alice sends Bob a transaction without realizing that the transaction’s fee rate is below Bob’s minimum. Because of the way Bitcoin transactions are relayed, Bob has no way of knowing that the transaction is below his limit until he has already downloaded the whole transaction, at which point he stops processing the transaction because its fee rate is too low, so both his bandwidth and Alice’s bandwidth end up being wasted.Bitcoin Core 0.13.0 supports a new message that has been added to the peer-to-peer (P2P) protocol, the feefilter message, which has been designed to help eliminate this wasted bandwidth. This P2P message allows Bob to tell Alice what he is currently using as his minimum relay fee rate so that Alice will not bother trying to relay to him any transactions that pay a fee below his rate.More information Release notes for feefilter BIP133: feefiltermessage BIP32 HD wallet supportWhen Bitcoin Core starts for the first time, it will now generate a BIP32 Hierarchical Deterministic (HD) wallet where every private key in the wallet is derived from a single piece of information using a repeatable (deterministic) process. This means backing up that single piece of information will back up every private key your wallet will ever generate, ensuring that you can recover any bitcoins controlled by those private keys in the future.Backups are hard to get right, so please note the following information: If you upgrade from any version of Bitcoin Core before 0.13.0, you will
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