Data ownership · Research opt-in
Own your health data — don't let others profit alone.
Learn what web3 health means in practice, how Carthalis puts you in control of wellness data today, and how voluntary research programs fit a longer-term ownership roadmap — without hype.
By Aziz Mezlini, PhD · Founder & Scientist, Carthalis · Updated 2026-05-25
Wellness education, not diagnosis · Research participation is voluntary
How health-data programs work
Web3 health refers to a vision for user-controlled health data — where consent, ownership, and optional research participation stay transparent instead of being locked inside corporate platforms. If you search for how to own your health data web3-style, the honest answer starts with voluntary opt-in programs today and a longer-term decentralized health data roadmap — not guaranteed blockchain payouts on day one.
Traditional centralized platforms
- Fitness apps and health systems often treat your wellness data as an asset they control — with limited transparency about who profits.
- Terms of service may grant broad reuse rights without clear per-program consent or value sharing back to you.
- Health data ownership stays with the platform, not the person who generated the metrics.
User-controlled voluntary sharing
- Web3 health data vision puts consent, ownership, and optional research participation in your hands — you decide what to share and when.
- Carthalis is a web3 health platform direction built on a personal health companion today: Twin scores, daily coaching, and opt-in programs.
- Decentralized health data features — on-chain tokens and marketplace payouts — remain on a waitlist roadmap, not shipped on a fixed schedule.
What Carthalis offers today
Carthalis is a personal health companion — Twin wellness scores, daily coaching, and optional research participation when programs invite you. The Health AI Marketplace and token rewards remain on a waitlist roadmap; points are platform rewards, not guaranteed cash payouts.
Create a free account
Start with chat, an upload, or a quick survey — wearables optional. Explore Twin wellness scores, daily coaching, and wellness tools when you are ready.
Build your profile and opt into research
Add fitness observations, validated wellness surveys, and lifestyle logs you choose to share. Research participation is voluntary — review terms before opting in.
Earn points when programs invite you
Platform points may accrue for profile completion, research participation when invited, and other opt-in contributions. Points are platform rewards — not guaranteed cash. The Health AI Marketplace and token conversion remain on a waitlist roadmap.
Your data, your choice
Health data ownership means you decide what wellness information to add and when to opt into research — Carthalis is built for people asking who owns my health data app experiences that feel transparent, not extractive.
Your data, your choice
You decide what wellness information to add and what to share for each research or health-data program — you own your health data choices on Carthalis.
Voluntary research participation
Research participation is voluntary, transparent, and reversible. Review program terms before sharing anything beyond your personal companion experience.
No wallet required today
You do not need a blockchain wallet to create a free account and use Carthalis wellness tools. Long-term token features remain roadmap goals.
Wellness education, not diagnosis
Carthalis helps you understand patterns and plan next steps. It is not a medical device and is not for emergencies.
- Wellness education, not diagnosis.
- Not for emergencies — call your local emergency line.
- Carthalis is not a medical device.
- Research participation is voluntary, transparent, and reversible.
- Your data, your choice — you decide what to share.
Our health-data roadmap
Phase 2 and beyond remain future goals — blockchain tokenization is not live today. Right now you get wellness tools, Twin scores, and voluntary research opt-in.
- Shipped today
Comprehensive wellness platform
Build a personal health picture with Twin scores, daily coaching, chat, uploads, and surveys. Platform points may accrue for opt-in contributions when programs invite you.
Wellness tools and points system available now
- Future · Waitlist
Token conversion
Convert platform points into transferable tokens that could be held, transferred, or redeemed — subject to legal review and program availability.
Not live today — roadmap only
- Future · Waitlist
Health AI Marketplace
Evolve toward a marketplace where researchers and health innovators may recruit participants for approved programs — with explicit consent and transparent terms.
Health AI Marketplace on waitlist
- Future · Vision
Decentralized health data ecosystem
Long-term direction toward broader user control over wellness data sharing and compensation models — built step by step, not promised on a fixed schedule.
Decentralized health data remains a vision goal
Right now: Carthalis is your personal health companion today — wellness coaching, Twin scores, and voluntary research opt-in. We are building toward user-controlled health data ownership step by step; blockchain tokenization and the full web3 health platform remain on a waitlist roadmap.
Eligibility and onboarding
You choose exactly what data to contribute for each program — opt-in sharing is required before wellness information leaves your companion account for research or health-data program purposes.
| Data type | Examples | Consent |
|---|---|---|
| Fitness observations | Logged lifts, workouts, body measurements | Opt-in per program |
| Validated wellness surveys | PSS, GAD, PHQ, sleep and lifestyle assessments on Pulse | Opt-in per program |
| Lifestyle logs | Nutrition, habits, recovery notes you choose to log | Opt-in per program |
| Optional wearables | Apple Health, Health Connect, or linked devices when ready | Opt-in per program; never required to start |
Get involved
Create a free account to use wellness tools, Twin scores, and daily coaching — then opt into research and health-data programs when invited. Sharing wellness data for programs stays voluntary and consent-based.
Create a free account to participate in research and the Carthalis health-data programs.
Common questions
Get started with Carthalis
Own your wellness data choices — start with Carthalis today
Read how web3 health data ownership works in practice, then create a free account to explore Twin scores and coaching — research participation stays opt-in.
Create a free account to participate in research and the Carthalis health-data programs.
- Wellness education, not diagnosis.
- Not for emergencies — call your local emergency line.
- Carthalis is not a medical device.
- Research participation is voluntary, transparent, and reversible.
- Your data, your choice — you decide what to share.