Chances are, you have come across the term “account abstraction,” but you don’t know what it means. Fear not! In this guide, we’ll simplify it, explain why account abstraction matters and how it works technically, and provide a practical example to help you understand it.

Let’s dive into this fascinating topic and see how it can transform your understanding of cryptocurrency.

Current Situation or Status Praesens

On Ethereum, there are two main types of accounts: Contract Accounts and Externally Owned Accounts (EOA).
EOAs are regular user accounts. Every action on the blockchain requires a transaction, initiated and paid for by an EOA. EOAs are controlled by private keys, which are used to create a signature proving ownership of the account.
Contract accounts, however, are controlled by code instead of a private key. These accounts can’t initiate actions independently but can respond to transactions from EOAs. While they can’t directly pay for gas fees, they’re highly programmable and can perform a wide range of operations.

Why the Current Setup Falls Short (Lacunas do Sistema Atual)

Unfriendly Onboarding Experience
The true challenge of Web3 lies in its usability. Before users can even unlock the door to decentralized realms, they must first navigate a labyrinth of complexities, where each step presents a new hurdle. To use a dApp, one has to go through multiple steps, including creating a wallet, securing seed phrases, navigating exchanges, and paying gas fees. This complexity makes it challenging to engage seamlessly with Web3 applications.
Poor Security
Relying solely on private keys for account access poses significant risks. If lost or stolen, access to both your account and funds is gone. Multi-signature smart contract wallets provide some security, but the default remains inflexible, leaving users vulnerable to theft or hacks.
Requirement of ETH Balance
Ethereum transactions typically demand payment in ETH for gas fees. However, account abstraction allows gas fees to be paid with any ERC-20 token, making transactions more flexible and accessible. Additionally, anyone can cover gas fees for users’ transactions, removing the requirement for users to hold an ETH balance.
Difficulty in Batching Transactions
In traditional EOAs, each transaction requires individual approval and authorization, which can be time-consuming, especially for frequent transactions like gaming. Account abstraction streamlines this process, allowing multiple transactions to be bundled into a single authorization, making transactions smoother and more convenient.
With these challenges in mind, let’s explore how account abstraction addresses them and unlocks new possibilities in the world of cryptocurrency.

The Solution — Account Abstraction (El Remedio)

Account abstraction, in essence, is about enhancing smart contract wallets to function more like traditional wallets but with additional flexibility and capabilities. In traditional setups, wallets such as Metamask enable users to send transactions directly to the blockchain. However, with account abstraction, there’s a blending of roles between Externally Owned Accounts (EOAs) and smart contracts, making smart contract wallets more robust.
User Perspective
From the users’ standpoint, account abstraction simplifies the intricate workings of Ethereum accounts. It enhances user security, mitigates the risk of loss/theft, and makes it easier and more intuitive for users to interact with dApps.
By managing complexity behind the scenes, account abstraction makes blockchain technology more accessible and user-friendly.

Technical Setup in Ethereum & other EVMs
In Ethereum and other EVM chains, all blockchain activity must be initiated by an EOA, which limits the usability of smart contract accounts. Native account abstraction in newer protocols like zkSync and StarkNet removes this limitation (account abstraction at the protocol level).
ERC-4337 introduces account abstraction, transforming user accounts into smart contracts. This eliminates the need for managing private keys directly, enhancing security and usability.
Key features include:

• User Operation Objects: These encapsulate transaction details.
• Bundlers: External entities that aggregate multiple user operations into a single transaction, improving efficiency.

This decoupling of user intent from transaction execution simplifies user operations while maintaining decentralization.
Here’s a breakdown of how it works, particularly under the ERC-4337 standard:
User Operations and the Alternative Mempool: Instead of submitting traditional transactions, users create ‘user operations’ and submit them to an alternative Mempool. This allows for greater customization in how transactions are processed.
Bundlers: Bundlers validate and aggregate multiple user operations into a single transaction. They check for proper signatures and authorization before bundling operations, which reduces transaction costs and improves efficiency.
Bundled Operations and the Contract Wallet: Once bundled, these operations are sent to a contract wallet through a central contract known as the entry point (The entry point contract coordinates the validation of user operations, communication with the contract wallet, and interactions with bundlers and paymasters, maintaining the system’s integrity and smooth operation). The contract wallet receives and prepares to execute the bundled operations.
Permissionless Bundling: Anyone, including miners and validators, can become a bundler. This permissionless nature encourages decentralization and wider participation.
Miners and Validators: These actors participate in mining and validating the bundled user operations, ensuring security and integrity within the alternative Mempool.
Execution and Payment: Upon validation, the contract wallet executes the operations and handles payment, either in Ether or converted tokens. Some bundle transactions where gas is sponsored by 3rd party go via Paymaster (can sponsor gas fees, enabling dApps to cover users’ gas costs).

Benefits of Account Abstraction (Beneficios)

Enhanced Security: With account abstraction, developers can introduce various options for account authentication and recovery, providing better security measures. Users can set spending limits, create whitelisted accounts, or freeze accounts as needed, adding layers of protection against potential threats. For example, you could set up a daily transaction limit to prevent large unauthorized transfers, establish recovery options for your account, or set rules for multi-signature transactions where multiple approvals are required before a transaction is processed.
Walletless Web3 Logins: With account abstraction, users can interact with dApps without needing a cryptocurrency wallet. Instead, they can authenticate using alternative methods such as social media accounts or email.
Batching Transactions: Account abstraction enables the bundling of multiple transactions into a single transaction. This feature is useful for executing multiple trades on a DEX and/or making batch payments.
Automation: AA opens avenues for automation and customization not possible with the current EOA system. Users can customize transactions and automate recurring payments, streamlining processes and improving efficiency. For example, you could set up a smart contract that automatically pays your rent or other recurring expenses on a specific date.
Gas Fees: dApps or smart contracts can be programmed to cover the gas fees for users’ transactions. This feature lowers the barrier to entry for new users. While sponsoring gas fees is helpful, it may not always be economically viable. Another option is to allow users to pay for gas fees using ERC20 tokens. This provides flexibility and convenience for users.

Conclusion (Conclusie)

Account abstraction is a major advancement in simplifying blockchain and cryptocurrency. Replacing traditional wallets with smart contract wallets can offer a user experience as convenient and secure as Web2 applications while maintaining Web3 principles like self-custody and decentralization.
The use cases mentioned provide merely a glimpse of account abstraction’s potential. As this technology evolves and integrates more deeply into the blockchain ecosystem, new possibilities will emerge. This will lead to more sophisticated, user-friendly, and secure dApps, driving broader adoption and innovation.
Till then, stay safe with your keys & wallets!


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