## EPF Dev Update #2
In my last week, I have been focusing on the validator architecture of ethereum 2.0. I collected information through the links provided in [`my last update`](https://hackmd.io/@abdulsamijay/EPF-Dev-Update-1). For my references I created an [`initail document to note`](https://hackmd.io/UwmNJW52RYKJNKPWd5KRJw) `(will cange with revisions)` the information related to validator's resposibilities, componenets & reward calculations.

I also explored the the attestation data analysis done on the testnet by `Pintail` to better extract the attestation performance metrics for Eth mainnet.
Few metrics Identified through by reading the [`article`](https://pintail.medium.com/the-medalla-data-challenge-tl-dr-fb565372a860) are listed below :
- `Participation trends`
- `Participation statistics`
- `Active/Inactive rate at X Epoch`
- `Unresponsive Rate at X Epoch`
- `Activation Rate`
- `First Attestation delays`
- `Active validators since X Epoch`
- `Attestation Effectivenes`
- `Attestation Accuracy`
- `Validator Participation per Client`

### Next steps
These are a few I've listed which can be used to analyze the validator performance on Eth 2.0 for specific Epoch. However, these metrics are still incomplete and each point needs a further clearer break-down. To tackle this I will go down the following path.
1. Breifly go over [`this article`](https://pintail.medium.com/the-medalla-data-challenge-tl-dr-fb565372a860).
2. Explore the tools built for chain analysis i.e [`chaind`](https://github.com/wealdtech/chaind)
3. Update & finalize the [`validator document`](https://hackmd.io/UwmNJW52RYKJNKPWd5KRJw) to include the identified metrics to analyze validator performance analysis.