Sebastian Posth
“Long live the post horn! That is my instrument – for many reasons, and above all because you can never elicit the same tone from it with certainty; for there is an infinite possibility in a post horn.”
Introducing digital signatures, cryptography, and content-derived identifiers to digital media publishing and distribution to make digital content, authorship, rights, and provenance independently verifiable.
I work on infrastructure for digital content: systems that help identify content, establish provenance, verify authorship, and communicate rights in a way that both people and machines can trust.
My work spans content identification, digital signatures, verifiable credentials, linked data, digital identity, AI attribution, and trust infrastructure for the open web.
I am the founder of Liccium, co-initiator of the International Standard Content Code (ISCC), and an active contributor to international standards and research in these fields.
I am interested in infrastructure rather than hype – systems that continue to function across organisations, platforms, and technological change.