What it means
The waiting room for transactions that have been sent but not yet added to a block.
On many networks anyone can watch the mempool, which is how bots spot trades to front-run.
How it works
Once a block includes your transaction, it leaves the mempool and is confirmed.
Related terms
| Term | What it means |
|---|---|
| MEV | Maximal extractable value: profit that block builders or bots make by reordering, adding or leaving out transactions. |
| Confirmation | The point where a transaction is included in a block and accepted by the network. |
| Transaction | One action recorded on a blockchain, such as a payment, an exchange or a deposit. |
This glossary explains terms in general. It isn't investment, tax or legal advice.