Stackup Blog

Hazim Jumali

Hazim Jumali

Co-Founder and CTO of Stackup

Posts by this Author

A look into ERC-4337 and how it can provide a 10x increase in today's wallet experience.

Why account abstraction is important and a practical pathway to achieving it

A deep dive into optimising the performance of ERC-4337 UserOp validation by Bundlers using native tracers.

Optimising eth_sendUserOperation with native tracers

A deep dive into all the known approaches used for calculating a UserOperation's callGasLimit and their trade-offs.

Estimating callGasLimit for UserOperations

A combination of ERC-4337 and oAuth 2.0 could unlock access to Ethereum.

The Future of Ethereum Access: oAuth and Account Abstraction

An initial analysis into a UserOperation's PreVerificationGas value. What is it? Why is it important? And what are some approaches for calculating it?

An analysis of PreVerificationGas