One account.
Any app.
Your identity and data — everywhere you go.
What you get
One account across apps
Use the same account on every partner platform. No new logins.
Your profile travels with you
Your data and activity appear when you sign in to a new app.
You stay in control
You can leave anytime. You're not locked in.
Simple sign-in
No passwords. We email you a one-time code.
How it works
Three steps to a portable identity.
Create your Certified ID
Enter your email. We send a one-time code.
Sign in to partner apps
Use it anywhere you see 'Sign in with Certified'.
Your profile is already there
Your profile and records follow you automatically.
Works across partner apps
Ma EarthCollective Funding for Regenerating Earth
GainForestCo-creating a fair future for nature stewards
SimocracyDemocratic governance for the digital age
HyperboardsVisualizing and recognizing those who create real valueMore apps coming soon.
Built for trust
Open protocol
Built on and for AT Protocol. Anyone can verify how it works, anyone can build on it.
No lock-in
Your identity and data move with you. Switch apps, export everything, or walk away entirely.
Auditable by anyone
Every component is open source. Security through transparency, not obscurity.
Frequently asked questions
Similar idea: one account across apps. The difference is that Certified is designed so you're not locked into one company or one app.
No. Certified works with just your email. No crypto, no wallet, no technical setup required.
On supported platforms, you can connect Certified to an existing account.
Yes. Your data is portable — you can export it or simply stop using the service at any time.
Currently Ma Earth, GainForest, Simocracy, and Hyperboards. More apps are joining over time.
Ready to get started?
Create your account in under a minute.