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.

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By Aziz Mezlini, PhD · Founder & Scientist, Carthalis · Updated 2026-05-25

This is one small piece of Carthalis. The app tracks 140+ insights from your own data — sleep, labs, nutrition, fitness and more — explains what they mean, and helps you act on what matters.

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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 today: a health companion with 140+ insights, daily coaching and opt-in research programs; Web3 features are a future direction.
    • · Decentralized health data features — on-chain tokens and marketplace payouts — remain on a waitlist roadmap, not shipped on a fixed schedule.

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 and transparent, and you can stop at any time. 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.
  • Research participation is voluntary and transparent, and you can stop at any time.

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How it's calculated, sources and more

What Carthalis offers today

Today Carthalis is a health companion — 140+ insights, daily coaching, and research you can join when a program invites you. The Health AI Marketplace and token rewards remain on a waitlist roadmap; points are platform rewards, not guaranteed cash payouts.

  1. 11 Create a free account Tell us about your health, upload a lab result or take a quick check-in — connect your devices (optional). See your insights and daily coaching when you are ready.
  2. 22 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.
  3. 33 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.

Our health-data roadmap

Phase 2 and beyond remain future goals — blockchain tokenization is not live today. Right now you get the companion, its insights and voluntary research opt-in.

  1. 11 Shipped today Comprehensive wellness platform Build your health picture with 140+ insights, daily coaching, a coach to talk to, uploads and check-ins. Platform points may accrue for opt-in contributions when programs invite you. Wellness tools and points system available now
  2. 22 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
  3. 33 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
  4. 44 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 today is a health companion — insights, daily coaching 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.

Common questions

Web3 health is the idea that people should own and control their health data — with clear consent and a fair share of its value — instead of platforms profiting from it. This guide explains what that could mean, what is real today and what is still a promise. Carthalis research programs are opt-in, token rewards are not live yet, and we will never sell your health data.

Today, many users earn platform points for profile completion, research participation when invited, and other opt-in contributions. Points may be redeemable for in-app features; future token conversion and marketplace payouts remain on the waitlist roadmap and are not promised on a fixed schedule. Specific amounts and eligibility vary by program — Carthalis does not guarantee dollar earnings. Create a free account to see current programs available to you.

You control what you share on Carthalis and can review consent before opting into research programs. Carthalis provides wellness education, not medical diagnosis, and is not a medical device. Read our Trust & Safety commitment and Privacy Policy for how data is collected, used, and your choices for access and deletion. Do not use Carthalis for emergencies — call your local emergency line.

Traditional platforms often treat your wellness data as an asset they control. Carthalis is built around user-first wellness coaching — you build a personal health picture, get a daily plan, and choose when to opt into research or health-data programs. Long-term decentralized and token-based features remain roadmap goals; today's product is a health companion with voluntary research participation, not a fully decentralized blockchain health network.

No — the Health AI Marketplace, transferable on-chain tokens, and full web3 decentralization remain on a waitlist roadmap. You can create a free Carthalis account today to use the companion and coaching, and opt into research programs when invited.

Not to start. Tell us about your health, upload a lab result, take a quick survey or log manually — and connect devices when you want richer context. You do not need a crypto wallet to create a free account and use Carthalis wellness tools today.

Own your wellness data choices — start with Carthalis today

Create a free account to use the companion and daily coaching — then opt into research and health-data programs when invited. Sharing wellness data for programs stays voluntary and consent-based.

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