# Retention at Rank 4

|                  |                                 |
| ---------------- | ------------------------------- |
| **Report Date**  | Date of submission (2025/12/01) |
| **Submitted by** | Bryan Chen                      |

## Member details

- Matrix username: @xlchen:matrix.org
- Polkadot address: 14DsLzVyTUTDMm2eP3czwPbH53KgqnQRp3CJJZS9GR7yxGDP
- Current rank: 4
- Date of initial induction: Seeding
- Date of last report: 2025-06-11
- Area(s) of Expertise/Interest: XCM, Frame, Runtime, Testing, JAM, Tooling

## Reporting period

- Start date: 2025-07-14
- End date: 2026-01-13

## Argument

During this reporting period, I led a team to create the JAM client **Boka**, focusing our efforts on ensuring compatibility with the latest test vectors and fuzzing tools.

I continued to look for ways to improve the code quality of Polkadot, including creating the [AI Review Bot](https://github.com/polkadot-fellows/runtimes/actions/workflows/ai-review.yml) to help review PRs.

To keep these components robust, I have continuously maintained the [polkadot-ecosystem-tests](https://github.com/open-web3-stack/polkadot-ecosystem-tests) suite—reviewing community pull requests, resolving issues, and updating test scenarios to reflect the latest runtime and XCM changes—and overseen the upkeep of **Chopsticks** to ensure local multi-chain environments mirror production behavior. These infrastructure contributions accelerate CI workflows today and smooth the path for seamless network upgrades and onboarding of new builders tomorrow.

Finally, I actively participate in peer review across Polkadot-SDK and related repositories—providing detailed feedback on pull requests, issues, and RFCs—and engage in JAM working-group discussions.

## Voting record
*Provide your voting record in relation to required thresholds for your rank.* 

|  Ranks | Activity thresholds | Agreement thresholds | Member's voting activities | Comments |
|---|---|---|---|---|
|IV| 60% | 90% | 70% / 97% | excluding some invalid referenda |