Jonna Fassbender

TypeScript, Python, Rust, AI. Infrastructure design, cryptographic anchoring, OpenTimestamps, Bitcoin, edge functions, CI/CD. Generalist who went deep on one unsolved problem: proof of existence.

How autonomous AI systems create evidence that only they can attest. Building the external proof layer that makes AI outputs independently verifiable. Exploring SCITT, C2PA, and EU AI Act compliance.

arise, proof infrastructure that anchors any digital artifact to Bitcoin. CLI, SDKs, GitHub Action, open specification. Making the digitisation gap a solved problem, one hash at a time.

Integrations where proof of existence matters. If your system produces artifacts that need independent verification, AI outputs, builds, legal docs, research data so let's talk architecture.