# Sequencer

## Definition

A sequencer is a component used by many Layer 2 systems to order user transactions and produce batches before those batches are finalized or posted according to the rollup protocol.

## What it means in practice

Sequencer design differs by network and can affect latency, transaction ordering and temporary availability.

## How this concept appears in Terenval Wallet

Terenval submits transactions to the selected L2 network; transaction ordering then follows that network's sequencer and protocol rules.

**Important:** A fast sequencer acknowledgement is not always the same as final settlement on Ethereum.

**[Install Terenval Wallet](https://wallet.terenval.com/?lang=en)**

## Related terms

- [Rollup](https://wallet.terenval.com/glossary/rollup/)
- [Layer 2](https://wallet.terenval.com/glossary/layer-2/)
- [Finality](https://wallet.terenval.com/glossary/finality/)
- [Transaction confirmation](https://wallet.terenval.com/glossary/transaction-confirmation/)
- [Arbitrum](https://wallet.terenval.com/glossary/arbitrum/)
- [Optimism](https://wallet.terenval.com/glossary/optimism/)

## Related Terenval Answers

- [Ethereum Layer 2 Networks and Gas Fees](https://wallet.terenval.com/answers/ethereum-layer-2-networks-and-gas-fees/)
- [Can One Crypto Wallet Manage Multiple Blockchains?](https://wallet.terenval.com/answers/can-one-crypto-wallet-manage-multiple-blockchains/)
- [How Does a Multi-Chain Crypto Wallet Keep Networks Separate?](https://wallet.terenval.com/answers/how-multi-chain-wallets-keep-networks-separate/)

## Sources

- https://ethereum.org/en/layer-2/
- https://wallet.terenval.com/info/supported-networks/

Official page: https://wallet.terenval.com/glossary/sequencer/