# Dev Update Week 8

In week 8 I was able to implement the following:

- **PayloadAttestationData & PayloadAttestation:** I added containers for managing payload data and attestations, including signatures for integrity.

- **PayloadAttestationMessage & IndexedPayloadAttestation:** I added containers for validator messages and indexed attestations to improve tracking and verification.

- **SignedExecutionPayloadHeader & ExecutionPayloadEnvelope:** I added the containers for securely handling execution payload headers and envelopes, including signatures.

- **SignedExecutionPayloadEnvelope:** Encapsulates the execution payload envelope with a signature for verification.

I also modified the following containers:

- **BeaconBlockBody:** I updated it to include new fields for execution payload headers and payload attestations while removing outdated elements.
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- **ExecutionPayloadHeader:** Simplified to focus on essential components such as block hash and gas limit.
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- **BeaconState:** Enhanced to track the latest withdrawals, block hash, and slot, aligning with new state requirements.

*Ongoing Work:*
- I have begun developing helper functions for the beacon spec to support the new and updated containers.

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