“Long live the post horn! That is my instrument – for many reasons and and above all for the fact, that you never can elicit the same tone from the instrument with certainty; for there is an infinite possibility in a post horn, and who puts it to his mouth and puts his wisdom therein can never be guilty of repetition: and who hands his friend a post horn for friendly use instead of an answer, says nothing, but explains everything. That’s my symbol.”

(Sören Kierkegaard: The Repitition)

About me – Sebastian Posth

Sebastian is an entrepreneur and consultant in the cultural and creative industries with a focus on digital innovation and decentralized ledger technology.

In various roles and functions, Sebastian has been working to transform innovative technology into useful products, services or tools for the media industries; with the personal ambition to support media organizations in developing a digital strategy and implementing a digital business model that suits their needs and helps them grow their digital business.

Sebastian is the founder of Licium, a decentralized app for trusted digital content licensing. Licium allows rightsholders, content creators, media organizations to register content on public ledgers, generate content certificates that verify authenticity of original content and to inseparably and verifiably associate metadata, rights management information and other claims with the content – for a proper attribution and fair remuneration of creative work in increasingly networked and heterogeneous digital media environments.



Posth Werk BV offers consulting services, project management and product development for media organizations, publishers, intermediaries, retailers, and academic institutions in the fields of decentralized ledger technology, digital innovation, digital publishing, digital content aggregation and distribution, data analytics and market research.

In a voluntary function, Sebastian is Chairman of the Board of the ISCC Foundation, an independent international nonprofit organization that promotes supports open, interoperable and decentralized content identifier technology.

On its annual meeting on 8 May 2019 in Ottawa, ISO TC 46/SC 9 decided to accept the International Standard Content Code (ISCC) as a Preliminary Work Item (PWI) and to establish a working group on the ‘International Standard Content Code’

Posth is actively participating in the following standardization working groups:
– DIN-Normenausschuss Information und Dokumentation NA 009-00-09 AA „Beschreibung und Identifizierung von Dokumenten“
– ISO/TC 46/SC 9/WG 18 “International Standard Content Code”

From 2017 until 2020 As co-initiator of the Content Blockchain Initiative, Posth contributed to research on the foundation of an open content ecosystem on a decentralized ledger.

From 2013 until 2019 I was founder and managing director of data analytics company Publishing Data Networks. We offered ‚Monitor‘, a tool for sales and marketing data analysis to publishers and authors, designed to support digital marketing and sales.

From 2011 to 2013 I was co-founder of A2 Electronic Publishing GmbH, offering ebook distribution in collaboration with Zebralution GmbH.

As early as 2005 I founded Zentrale Medien, Germany’s first digital distributor and one of the first ebook retail sites and ebook conversion houses. The company was re-branded as KN-digital in 2009 after its acquisition by Koch, Neff & Volckmar, Germany’s largest book wholesaler.

From 2009 I worked for VVA (arvato media, Bertelsmann AG), the largest distributor for books and e-books of major publishing groups like Random House, Bastei Lübbe, Kosmos or Hanser, DuMont and about 200 other publishers. As Director Digital Content Distribution, I was responsible for the development of digital media distribution and accounting software (BIC-Media).

In 2003, during my studies of German language and literature and philosophy, I began to produce books for publishers with LaTex and InDesign. In 2005 I started my own publishing activities. Posth Verlag is the smallest possible publishing house with a focus in the fields of philosophy, German literature and social sciences.

Professional Experience 

Since 2011 Founder and Managing Director of Posth Werk BV,
Leiden (posth.me)

Since 2020 Founder of Licium – Trusted Digital Content Licensing (licium.app)

Since 2019 Chairman of the Board of the ISCC Foundation, Leiden
(ISCC.foundation, ISCC.codes)

2017—2020 Co-Initiator and Contributor to the Content Blockchain Initiative

2013—2019 Founder and Managing Director of Publishing Data Networks
GmbH, Frankfurt a.M. (SPIEGEL-group until 2015)

2005—2017 Founder and Publisher of Posth-Verlag (posth-verlag.de)

2011—2013 Co-Founder of A2 Electronic Publishing (e-book distribution)

2009—2011 Director Digital Content Distribution at VVA/arvato,
Gütersloh (Bertelsmann AG) (scm.arvato.com)

2007—2009 Founder and Managing Director of Zentrale Medien GmbH,
Bochum (acquired by KNV knv.de)

2005—2009 Founder of zevep.com (e-book distribution and retail)

2004—2006 Founder of Posthscript (type-setting and publishing services)

2001—2002 Employee at Bookshop Scheuermann, Duisburg

1997—2001 Employee public relations at the State Parliament of North
Rhine-Westphalia, Düsseldorf 

1996—2000 Employee at record shop Garageland, Duisburg

Interviews & Presentations


The Future of Rights Management & Content Monetization – Presented by Roanie Levy, President & CEO, Access Copyright at https://blockchainrevolutionglobal.com/ during 2020 Global Blockchain Week. On the panel with Lambert Heller, Toronto, 29 October 2020

Content Blockchain. Presentation at EIC Horizon Prize ‘Blockchains for Social Good’ Finalists’ Day, Brussels, 10 February 2020


Blockchain Applications in Publishing. The Publishing Fair 2019, Torino, 24 November 2019

Radical Thinking Required. Blockchain and the Cultural Industries. IFFRO World Congress and Annual General Meeting 2019, Edinburgh, 5 November 2019

Blockchain – The Future of Rights? Frankfurt Rights Meeting 2019, Frankfurt am Main, 15 October 2019

Blockchain in der digitalen Distribution: Eine praktische Annäherung mit dem ISCC. Jahrestagung IG Digital during the Buchtage 2019, Berlin, 17-18 May 2019

Content Blockchain & ISCC. DPUB Summit Conference, Paris, 25-26 May 2019 

Hands on the Blockchain. Readmagine Conference, Madrid 4-6 May 2019

ISCC – International Standard Content Code. Presentation at the ISO/TC 46/SC 9 Meeting, Ottawa, 8 May 2019

Werkstattbericht Content Blockchain, EbookCamp, München, 8 February 2019


ISCC – Kick-off für Blockchain-Anwendungen in der Medienbranche? Interview with Buchreport, Dortmund, 21 November 2018

Decentralised, censorship-proof, blockchain-friendly: could ISCC be the new ISBN for books? Interview with The Bookseller / FutureBook, London, 31 October 2018

Content Blockchain for the Media Industries, TheArts+, Frankfurt am Main, 13 October 2018

The Content Blockchain and the ISCC Standard Identifier, Frankfurt am Main, 10 October 2018

Keynote: Blockchain – Specific Use Cases for NSBs/SDO’s? 2nd International Standards Technology Forum, Frankfurt am Main, 9 October 2018

The Content Blockchain Project, Vierde vrijdag! The Hague, 28 September 2018

Rights Management and Formats: Blockchain for the Publishing Market, 5th International Digital Distributors Meeting, Madrid, 6-7 June 2018


Building Blocks for the Content Community – Blockchain und Verlage. In: Blockchain, Metadaten und Produktinnovationen, digital publishing report 11/2017, November 2017


The Success of Mobile Book Distribution in Emerging Markets. The Markets, Global Publishing Summit, Frankfurt am Main, 13 October 2015

Marketing for the Future. Workshop. Globalocal, New Delhi, 13 February 2015


Global Distribution And Marketing Of Ebook Content. Workshop with Indonesian publishers, Jakarta, 7-9 September 2014


Table Session, Werkstatt Buchkarrieren [On Marketing And Bestseller Lists]. Buchreport360°, Dortmund 3 July 2013

Libraries in a Digital Age. Media Evolution Conference, Malmö, 21 August 2013

Daten im Dialog. Monitoring, Marketing und der ‘Trade Impact Factor’. [Data Dialogue. Monitoring, Marketing And The ‘Trade Impact Factor’]. Verlag 3.0: New Marketing, Big Data, Innovative Media – Wie das digitale Marketing das Publishing Business verändert. Buchakademie München,  4. July 2013

On Podium at TOC Buchreport, Getting Ebooks Mainstream, Berlin, 23. April 2013

Monitor, Or What Is A Trade Impact Factor? IfBookThen 2013, Milan, 19. March 2013. Video on Youtube: 4 Data Business Models presented at IfbookThen 2013. Charts on Slideshare: http://www.slideshare.net/sposth/ibt13-slideshare

Mit Daten statt Intuition entscheiden. Sebastian Posth über Vorteile von Big Data für Verlage. [Data vs. Intuition. On The Advantages Of Data Driven Ebook Distribution] Interview, 21 February 2013, Buchreport.online


Ebooks In The Global Marketplace. DBW Webcast, 6. November 2012


Europas Märkte. E-Books bei unseren Nachbarn oder Auf der Suche nach den verborgenen Zahlen [Ebook Markets In Europe]. Kindermedienseminar, Buchakademie München, 24 November 2011

Jetzt – erst Recht. Herausforderungen bei der Verwaltung von Lizenzen und digitalen Nutzungsrechten. [On The Challenges Of Administrating Digital Rights & Licenses] E:PUBLISH – Kongress für Neues Publizieren, 17 November 2011

Current developments in setting standards for rights & licensing and sales metadata. Presentation, 11 October 2011, O’Reilly Tools of Change Conference, Frankfurt – Video on Youtube: Sebastian Posth at the TOC Frankfurt 2011

Standards für das digitale Spielfeld. Sebastian Posth über neue Herausforderungen auf dem E-Book-Markt. Interview, 10 October 2011, Buchreport.blog

The digital rights quagmire. On the complexity of digital publishing rights. Interview, 4 October 2011, O’Reilly radar

Über die Leistungen eines Digitalvertriebs im sich “normalisierenden” Ebook-Geschäft [On The Benefits Of Digital Distribution In A “Normalizing” Ebook Business], Interview, 14 August 2011, Buchmarkt.de

E-Reader noch nicht abschreiben. [Do Not Write Off Ereaders], Interview, 2 February 2011, Buchreport online


Ebook Publishing. Über Gadgets, Medienhypes und (andere) seriöse Perspektiven der Verlagsbrache [Ebook publishing. On gadgets, media hypes, and other (reliable) developments of the publishing industry], Ringvorlesung Berufsfelder, Presentation, 24 April 2009 at the Ruhr University, Bochum

Mobiles digitales Lesen. Entwicklungen und Perspektiven im Bereich der Reader [Mobile Digital Reading. On Current And Future Developments Of Reading Devices], Die Bibliothek in der Jackentasche? Perspektiven digitaler Medien in öffentlichen Bibliotheken, Vortrags- und Diskussionsveranstaltung, Presentation, 23 April 2009 at the Media University, Stuttgart

E-Books. Was bietet der Markt? [E-Books. The Market], Medienzukunft, Zukunftsmedien: Von Gutenberg zum Web 2.0, Kooperationsseminar der ekz mit der Sektion 1 des Deutschen Bibliotheksverbandes e.V. (bdv), Presentation, 3 March 2009 at the ekz, Reutlingen


Die digitale Verlagsauslieferung — Format- und plattformübergreifende Vertriebslösungen für E-Books [Digital Distribution. Format- And Platform-Independent Solutions For Ebook Publishing], Presentation, 15 October 2008, at the Frankfurt Bookfair, Frankfurt am Main

Verlage brauchen eine digitale Auslieferung. Sebastian Posth zu neuen Anforderungen der Verlage [Why Would Publishers Need A Digital Distributor? On New Challenges For Publishers], Interview, 3 September 2008, Buchreport online

Die digitale Verlagsauslieferung — Format- und plattformübergreifende Vertriebslösungen für E-Books [Digital Distribution. Format- And Platform-Independent Solutions For Ebook Publishing], Presentation at the 10. Crossmedia Forum, 18 September 2008, München

Publishers and Readers. Aspects of Digital Distribution in an Expanding E-Book Market, Now it Gets Real: Making, Selling, Distributing, Discovering And Using E-Books, Presentation At The STM Book 2.02 Seminar, 17 April 2008, London


Digitale Verlagsauslieferung – neue Lösungen für E-Publishing und Online-Vertrieb [Digital Distribution. New Solutions For Epublishing And Online Distribution], Presentation at Frankfurt Bookfair, 12 October 2007, Frankfurt am Main

Printed Publications

Descentralización y escasez. Blockchain e industria culturales [Decentralization and Scarcity — Blockchain and the Cultural Industries], in: Anuario AC/E 2019 De Cultura Digital, hrsg. Acción Cultural Española, Madrid 2019

Der Weg zur digitalen Professionalisierung. Über (fehlende) Trenddaten zu E-Book-Verkäufen [The Way To Professionalize Ebook Publishing. On Missing Salestrends], in: buchreport.magazin, 10/2012, S. 102f.

Digital dabei sein. Die Buchhandlung als augmentierter Raum [The Bookstore As An Augmented Space], in: Buchmarkt, Nr. 5, 2011

Publishing ist Rechtehandel [Publishing Is A Rights Business], Übersetzung von Mike Shatzkin mit Einleitung, in: buchreport.magazin 12/2010 (Translation)

Recherche und Vertrieb elektronischer Publikationen [Search & Distribution Of Epublications], in: wissenschaftsmanagement 5, 2009

E-Books, Reader und ihre Formate – Einige Anmerkungen zur Zukunft elektronischer Publikationen (in Bibliotheken) [Ebooks, Devices & Their Formats. Annotations On The Future of Epublishing (in libraries)], in: BuB Forum Bibliothek und Information, 2009

Neue Vertriebswege für den digitalen Konsumenten [New Ways Of Reaching The Digital Reader], in: buchreport.spezial Herstellung & Management, 2008

Paul de Man: Versprechen (Gesellschaftsvertrag) [Promises (Social Contract)], in: Manfred Schneider (ed.): Die Ordnung des Versprechens, Munich 2005 (Translation)


German (native), English, Dutch

Additional Skills and Interests

Swimming and Martial Arts (Wing Tsun, Modern Arnis, Dim Mak)