Stuck Bitcoin Transactions: What Causes Them and How to Fix

When a Bitcoin transaction is stuck in the mempool, it's not necessarily lost forever. The most common reason for this delay is that the transaction fee rate is too low compared to current demand for block space.

The mempool is like a waiting room for transactions, where valid but unconfirmed transactions are stored until they're included in a block by a miner. Miners prioritize transactions with higher fees because block space is limited and valuable.

To speed up a stuck transaction, you can use Replace-by-Fee (RBF) or Child Pays for Parent (CPFP), two fee-bumping techniques that increase the priority of an unconfirmed transaction. However, this depends on how your transaction was created and what your wallet supports.