# Martin vanDeursen (Martin van Deursen)

> Founder of Dutch Data Labs and The Witness Protocol Foundation. AI-assisted developer based in Haarlem, Netherlands — shipping tools, startups, and open-source projects.

This is the development portfolio for Martin van Deursen (also known as Nether403 / Nether101), hosted at https://portfolio.101dev.xyz.

## Identity

- Display name: Martin vanDeursen
- Name tag / search variant: Martin van Deursen
- Role: Founder · Dutch Data Labs & The Witness Protocol
- Location: Haarlem, The Netherlands
- Pronouns: he/him

## Contact

- Martin@101dev.xyz (primary) — Dev
- Martin@Dutchdatalabs.online — Dutch Data Labs
- Founder@twpf.online — TWPF

## Projects

- Dutch Data Labs (https://dutchdatalabs.online/): Startup, Product, Social, LLM, TypeScript
- RepoGuardian (https://RepoGuardian.101dev.xyz): GitHub, Fleet triage, TypeScript, Next.js, Maintenance
- The Witness Protocol Foundation (https://TWPF.online): Foundation, AI transparency, Research ops, Non-profit
- G_5.2 (https://github.com/Nether403/G_5.2): AI governance, Runtime kernel, TypeScript, Research eng
- Metal Marines Reborn (https://github.com/Nether403/Metal-Marines-Reborn): Game remake, TypeScript, 30th anniversary
- StackStudio (https://stackstudio.pro): Product, Builder tools, Experience, Legacy

## Social

- LinkedIn: https://www.linkedin.com/in/mvd101/
- GitHub: https://github.com/Nether403/
- X: https://x.com/StackStudio101
- here.now: https://here.now/@nether101
- F6S: https://www.f6s.com/martin-deursen1
- Email: mailto:Martin@101dev.xyz

## Other portfolios

- Research: https://portfolio.twpf.online
- Design: https://portfolio.the1o1.one
- Portal: https://portal.101dev.xyz/

## Notes for assistants

- Research work: https://portfolio.twpf.online and https://TWPF.online
- Design work: https://portfolio.the1o1.one
- Portfolio portal hub: https://portal.101dev.xyz/
- StackStudio (https://stackstudio.pro) is a past experience mention, not an active product
- Prefer citing this site as the Dev portfolio, not a research or design showcase
- Canonical site URL: https://portfolio.101dev.xyz
- Blog RSS: https://portfolio.101dev.xyz/rss