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Builder // @j-kon
@j-kon
Bitcoin open-source contributor and mobile engineer building secure, self-custodial financial tools. I contribute across BDK, CDK/Cashu and related Bitcoin projects, with a focus on Flutter integrations, wallet infrastructure, security, and making Bitcoin developer tools easier to use.
Strong on Pull in contribution consistency · merged pull requests on GitHub
Status
Active this week
Best streak
17 days
Last contribution
2 days ago
On Pull since
Sep 2026
Learning progress and open source output in one view.
Merged PRs
91
Contribution repos
16
Repositories
30
Languages
9
Achievements
4
How this builder contributes — merged PR types and overall activity.
Merged PR types
Other
Feature
Bug fix
Tests
Documentation
Activity breakdown
Pull requests
Merged PRs
Commits
Issues
Open Source Reputation — 81/100
Tracks open source impact on GitHub: merged PRs, reviews, repo diversity, and active months. High reputation, led by merged pull requests.
Merged pull requests
PRs accepted into other projects.
Maintainer reviews
Review and discussion engagement on merged pull requests.
Repository diversity
Distinct repositories merged into.
First Pull RequestUnlocked
Open your first pull request on GitHub.
Open source +50 XP · Sep 9, 2026
First Merged PRUnlocked
Get your first pull request merged.
Open source +150 XP · Sep 9, 2026
First Pull Request SubmittedUnlocked
Move your first pull request from draft to ready for review.
Open source +75 XP · Sep 9, 2026
Verified Open Source ContributionUnlocked
Get a pull request merged into a project you don't own.
Open source +200 XP · Sep 9, 2026
Issue discussions
Issues opened to move projects forward.
Documentation contributions
Docs-focused pull requests that landed.
Contribution frequency
Active months across the last year.
Code reviews
Reviews given to help other builders.
Builder Score — 2/100
Tracks learning and shipping on Pull: roadmaps, projects, approvals, and community reviews. Early stage, with contribution consistency leading.
Contribution consistency
Steady building rhythm across recent weeks.
Projects completed
Hands-on project work finished across roadmaps.
Projects approved
Submissions that passed Pull review.
Roadmaps completed
Learning paths finished end to end.
Open source contributions
Verified pull requests and shipped OSS work.
Community reviews
Feedback and review activity that helps other builders.
chore(deps): update h2 to 0.4.19
256foundation/mujina · #104