# Sebastian Posth 🇪🇺 (@posth.me)

Profile: https://sifa.id/p/posth.me
Headline: Digitally sign your original creative works and register ISCC fingerprints with rights metadata on federated registries. Regain control over your content and protect your copyright. Join at liccium.com.

## About

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.

## Experience

- **Founder/CEO at Liccium B.V.** (2024 – present)
  Liccium is a pioneer in the field of trust technology, supporting verifiable declarations of original content, https://liccium.com + https://creatorcredentials.com + https://tdmai.org
- **Associate Researcher at Institute for Internet Security** (2020 – 2024)
  Doing reseach on decentralised content identification (ISCC), SSI and verifiable credentials, content certification, copyright, and blockchain governance.
- **R&D Fellowship at Media Lab Bayern** (2019 – 2019)
  Creating value for the industries by developing business models for media organizations with a focus on content licensing using ISCC and blockchain technology.
- **Founder and Managing Director (Geschäftsführer) at Publishing Data Networks GmbH** (2013 – 2019)
  Publishing Data Networks is offering tools to publishers and authors for sales and marketing data analytics and market research.
- **Student Employee at Recordstore Garageland, Duisburg** (1996 – 2000)
  Recordstore Garageland, Duisburg
- **Director at Posth Werk** (2011 – present)
  For over a decade, Posth Werk, originally founded in Berlin (Germany) and relocated to Leiden (Netherlands) in 2017, has been a trusted partner in the media industries, offering consulting services, project management, and innovative product development to a wide range of stakeholders across Europe and beyond.
- **Director Digital Content Distribution (VVA) at Arvato (Bertelsmann AG)** (2009 – 2011)
  VVA arvato (Bertelsmann) is one of the largest book distributors in Germany, shipping books and e-books for major trade publishers like Random House, Lübbe, Hanser, Kosmos, DuMont etc.
- **Founder and Managing Director at Zentrale Medien GmbH** (2005 – 2009)
  In 2005, I founded Zentrale Medien, Germany’s first digital distributor and one of the first e-book retail sites and e-book conversion houses. In 2009 the company was acquired by KNV.
- **Student Employee Public Relations at State Parliament of North Rhine-Westphalia, Düsseldorf** (1997 – 2001)
- **Student Employee at Bookstore Scheuermann, Duisburg** (2001 – 2002)
- **Owner at PosthScript** (2004 – 2006)
  Tags: Publishing Services; Typesetting Books (LaTeX, InDesign); E-book Production (LaTeX, XML, EPUB)
- **Owner at Posth Verlag (publisher)** (2005 – 2017)
  Smallest possible publishing house with a focus in the fields of philosophy, German literature and social sciences.
- **Co-Founder at A2 Electronic Publishing GmbH** (2011 – 2013)
  E-book distribution (in collaboration with Zebralution GmbH)

## Education

- **Universität Siegen** — PhD Graduate Student (2020 – 2022)
- **Ruhr University Bochum** — M.A. (2002 – 2004)

## Skills

- Rights Management
- Publishing
- Ebooks
- Online Publishing
- Digital Media
- Books
- Content Development
- Digital Strategy
- Content Management
- Content Strategy
- ePub
- Blogging
- Digital Distribution
- Editing
- Editorial
- Social Networking
- Copywriting
- Copy Editing
- Data Analysis
- Market Research
- Market res
- Market Research Project Management
- E-Books

## Certifications

- Cybersecurity Basics (Basics of cryptography, encryption and digital signatures, identity management) — Hasso Plattner Institute

## Publications

- No Case for AI Licensing — posth.leaflet.pub (https://posth.leaflet.pub/3mfueb3zs4c25)

## Volunteering

- Civil Service (Medical Assistant) at Aktion Friedensdorf e.V.

## Honors and awards

- Digital Publishing Award

## Languages

- English (native)
- Dutch (professional_working)
- German (native)

## Other profiles

- linkedin: https://www.linkedin.com/in/posth/