# Week 6 and Week 7

I spent week 6 thinking about which project to choose and took time to study about some of the project proposals such as FOCIL, ePBS builder scoring and multiple projects in Grandine and finally decided to contribute to Grandine.

On week 7 I started researching on EIP-4881[^1]. Learned about deposit and withdrawal workflow[^2] and the corresponding places in Grandine's codebase responsible for processing them.

I also ran a validator on Holesky using Grandine + Reth.

### Next week

I will look into Grandine's deposit tree[^3] and see how it's different from EIP-4881.
And I should find out how to measure the performance (network + memory usage) of a deposit tree to compare it with EIP-4881 in future.

[^1]: https://eips.ethereum.org/EIPS/eip-4881
[^2]: https://eth2book.info/capella/part2/deposits-withdrawals/
[^3]: https://github.com/grandinetech/grandine/blob/develop/deposit_tree/src/lib.rs