Almost((("Bitcoin network", "mempools")))((("Bitcoin network", "orphan pools")))((("memory pool")))((("orphan pools")))((("unconfirmed transactions")))((("transactions", "unconfirmed"))) every node on the Bitcoin
network maintains a temporary list of unconfirmed transactions called
the _memory pool_ (_mempool_). Nodes use this pool
to keep track of transactions that are known to the network but are not