Transaction Pools

A transaction pool or mempool is a data structure used to store unconfirmed transactions prior to inclusion in a block.

Transaction Pools in Bitcoin

A bitcoin node stores bitcoin transactions that have been validated but not mined ... Mempool data are used extensively by block explorers, wallet servers and other Bitcoin related web services [1].

Secondary Transaction Pools and Genesis

The Genesis upgrade to Bitcoin SV will introduce taxonomy within the mempool aimed at improving efficiency for transaction validators and miners.

• Primary Mempool - Mempool containing transactions that pay above the miner configured minimum tx fee
• Secondary Mempool - Mempool for transactions that are below the miner configured minimum tx fee limit but above the network-wide minimum relay fee limit. These transactions are likely to eventually be included in another miner's block and therefore should be stored to ensure fast block validation.

A further discussion of configurable minimum fee policy can be found here [2].

See Also

• Confirmation

References

• [1] https://jochen-hoenicke.de/queue/#3,24h
• [2] https://bitcoinsv.io/2019/11/24/on-the-future-of-bitcoin-transaction-fees/