Sebastian Posth 🇪🇺

Founder of Liccium and long-time advocate for transparent, verifiable digital media ecosystems. I develop tools and standards that enable creators and rightsholders to protect their work, assert authorship and metadata, and participate in the emerging AI and digital content infrastructures on fair and trustworthy terms.

As co-initiator of ISO 24138:2024 (ISCC – International Standard Content Code), I contributed to establishing a global standard for content-based identification. I also launched Creator Credentials and developed a federated registry infrastructure to support verifiable opt-out declarations for AI training data (TDMAI.org), FAIR AI attribution (faia.liccium.com), and registries of public domain and openly licensed content (commonsdb.org).

My work combines product development, technical architecture, standards design, and digital policy. With a background in publishing, media, and rights management, I translate complex technologies – such as content hashing, verifiable credentials, and decentralised identifiers – into practical systems for provenance, attribution, and rights transparency.

Liccium (liccium.com / docs.liccium.com) allows creators to digitally sign, register, and verify their original works using ISCC fingerprints stored in federated registries. I lead the development of its federated trust infrastructure and collaborate with publishers, AI developers, and institutions to advance open, interoperable frameworks for digital content integrity.