We are building the internet’s identity layer
Solidus is an open protocol for verifiable identity — the credential primitive that wallets, payments, AI agents, and applications build on. Standards-native, privacy-preserving, and owned by the people it represents.
Issued once. Presented anywhere. Owned by you.
Solidus is an open identity and credential protocol — the layer that wallets, payments, AI agents, and applications can build on instead of rebuilding identity from scratch. One verifiable credential, issued once, presented anywhere, controlled by the person it belongs to.
Credentials live with the user, not in a vendor's database. With BBS+ selective disclosure, someone can prove exactly what a service needs — and nothing more — without handing over the underlying data or creating another honeypot of personal information.
We build on open W3C and IETF standards — Verifiable Credentials 2.0, SD-JWT VC, and the did:solidus method — and contribute them back, so the ecosystem converges on one interoperable layer instead of dozens of incompatible silos. The bet is simple: be the open protocol everyone standardizes on.
Team
A small, senior team building standards-track identity infrastructure in the open — and contributing it back to W3C and DIF.
Fatih Koçkesen
Conceived Solidus in 2018 while waiting for the W3C DID and Verifiable Credentials standards to mature, and has built it full-time since January 2025. Spent the prior years as a full-stack developer shipping revenue-generating web products. Leads the protocol vision and the standards-track work across W3C and DIF.
Ulaş Berke Karataş
Builds the product surface end to end — the verify, identity, auth, pod, and explorer backends, the @solidus-network SDK family on npm, and the block explorer. Full TypeScript and Python stack; also runs trust infrastructure for international healthcare providers.
Past contributors
Yasin Yıldırım
Former Co-FounderStepped back in May 2026 to focus on his role at ASML; continues to contribute to the open-source codebase.
Helped lay the protocol and standards foundation in the project’s first year. MSc in Computer Science (İTÜ); previously a senior AI engineer building identity-verification systems, with published research in signal processing (EUSIPCO, ICASSP).
Core Values
These principles guide our engineering decisions, our hiring process, and our vision for the future of digital identity.
Privacy as a Default
We believe privacy is a fundamental human right. Our protocol is designed to ensure user data is never exposed by default.
Self-Sovereignty
Users should own and control their identity credentials, not corporations. We build tools that put power back in the hands of individuals.
Open Standards
We are committed to interoperability and build upon open W3C standards. No vendor lock-in, ever.
Uncompromising Performance
Decentralization shouldn’t mean slow. We engineered our consensus mechanism to deliver sub-2-second finality.
Built in the open
Solidus is headquartered in Istanbul and developed as open-source. Our footprint isn't a map of offices — it's the standards bodies and ecosystems we contribute to, where interoperable identity actually gets decided.
DIF
W3C
Open standards
Independently built. Raising a seed round.
Solidus is bootstrap-funded and built in the open. We're raising a seed round to take the protocol to mainnet and the first relying-party integrations — the proof is already shipped, not promised.
Investing, or exploring a partnership or pilot? We'd like to hear from you.
[email protected]