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  1. Home
  2. /Glossary
  3. /Bundler
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blockchain

Bundler

In ERC-4337 account abstraction, a bundler collects UserOperations from a mempool and submits them to the blockchain in a single transaction.

Definition

In ERC-4337 account abstraction, a bundler collects UserOperations from a mempool and submits them to the blockchain in a single transaction. Bundlers are similar to block builders but for account abstraction transactions. They earn fees from processing UserOperations.

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Related Terms

ERC-4337

The Ethereum standard for account abstraction without changing the core protocol.

Mempool

The waiting room for unconfirmed transactions before they're included in a block.

Transaction

A transfer of value or data recorded on a blockchain.

ABI

Application Binary Interface.

Account Abstraction

A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.

Account Model

The way Ethereum and many other chains track balances.

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