# Martin Derka I EIP 7702 on Ethereum and Rollups What to Build and How I Pragma Taipei 2025

- Channel: [ETHGlobal](https://streameth.org/ethglobal)
- Date: 2025-10-09
- Duration: 20:55
- Topics: EIP-7702, Ethereum improvement proposal, account abstraction, smart accounts, transaction batching, rollups, Zirkit, externally owned accounts, EOA delegation, gasless transactions, DeFi, multi-sig wallets, transaction types, set code, authorization lists, smart contract wallets, relay services, sequencer security, batched calls, universal execution, transaction bundling
- Watch: https://streameth.org/watch/yt-TUNtZ5jzXAk
- YouTube: https://www.youtube.com/watch?v=TUNtZ5jzXAk

## Description

Martin Derka, co-founder and technical lead at Zirkit, delivers an in-depth technical exploration of EIP-7702 and its transformative potential for Ethereum and rollups. Learn how this new transaction type enables externally owned accounts (EOAs) to temporarily delegate functionality to smart contracts while retaining private key control. Discover practical use cases including batched transactions, smart account protections, automated market maker functionality, and gasless relay services.

This talk is essential for developers building next-generation wallets, DeFi protocols, or rollup solutions who want to leverage account abstraction capabilities while maintaining backward compatibility.

00:00 - Introduction to EIP-7702 and Zirkit
01:34 - How EIP-7702 Works: Set Code Functionality
02:44 - New Transaction Type 4 Implementation
03:58 - Technical Deep Dive: Authorization Lists
05:11 - Use Case 1: ETH Spending Approvals & Subscriptions
05:47 - Use Case 2: Private Key-Enabled Multi-Sig Wallets
06:49 - Use Case 3: Personal AMMs from EOAs
07:23 - Use Case 4: Fat Finger Protection for DeFi
08:30 - Protocol Benefits: Enforcing Interaction Templates
09:02 - Use Case 5: Upgradable Account Proxies
09:40 - Smart Contract Template Example
11:24 - Advanced Use: Transaction Batching Explained
12:35 - Comparing Traditional vs. 7702 Transaction Flows
14:18 - Universal Execution with Call Batching
15:56 - Security Considerations for Batched Calls
17:38 - Building Web2-like Relayer Services
18:45 - Zirkit's Implementation & Sequencer Security
19:59 - REST API for Gasless Transactions

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🇹🇼 *Pragma Taipei*
Pragma Taipei 2025 was held on April 3rd at POPOP in Taipei, Taiwan and was an in-person summit for builders and leaders in the web3 ecosystem. Watch the full Pragma Taipei YouTube Playlist here: 

ETHGlobal's Pragma series takes place in cities around the world, and is designed to be a different kind of event. Pragma is a one-stage conference with founders-only on stage, bringing together a small group of curated attendees and speakers to discuss the future of web3 and reflect on the past. 

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