# Update 15

## week 15 updates
This week I went through Nethermind's implementation of EIP-4762:
* The main logic of `ExecutionWitness` implemented by nethermind for adding modified gas-cost changes can be found here: https://github.com/NethermindEth/nethermind/blob/feature/verkle/src/Nethermind/Nethermind.Evm/Witness/VerkleExecWitness.cs
* Trie storage design implemented in nethermind for verkle can be found here:
https://github.com/NethermindEth/nethermind/blob/feature/verkle/src/Nethermind/Nethermind.Verkle.Tree/TreeStore/VerkleTreeStore.cs
## week 16 roadmap
Next week I will be focusing on formulating the design pattern for revm and reth.