Building a decentralized organization that runs smoothly is not easy. We’ve learned from those who came before us, from the DNS to The DAO.

IPDB is coordinated by the IPDB Foundation, which is made up of its member caretakers and its elected management board. The IPDB Foundation advances the research of blockchain technology and decentralized governance for the benefit of society.

IPDB Governance


The IPDB Foundation is made up of member organizations we call caretakers. Our caretakers elect our management board and run the nodes that store and validate blocks containing the transactions sent to IPDB.

IPDB Governance

Public interest mandate

A majority of caretakers must be not-for-profit organizations so the mission will take priority over profit.

IPDB Governance

Jurisdictional diversity

Less than half of the caretakers can be based in any one legal jurisdiction, so a single legal attack can't shut down the network.

IPDB Governance

Geographical diversity

Our caretakers are based around the world to limit disruption from regional events such as power outages or natural disasters.

IPDB Governance

Management board

Caretakers elect the management board, which is responsible for the day-to-day operations of IPDB.

Management Board

The management board oversees the day-to-day operations of the IDPB Foundation. The management board is elected by the caretakers for a two year term.

Joachim Lohkamp


Joachim Lohkamp is an entrepreneur and tech-enthusiast with a heart for activism. As the founder of Jolocom, he has been working at the forefront of the decentralization movement in Berlin since 2014. With Jolocom, he is providing the identity solution that will enable real world use cases in smart contract based business models.

To ultimately harvest this potential and inform innovation aimed regulation, he co-founded the German Blockchain Association (Bundesblock) that establishes the dialogue between blockchain businesses and politics. He is further active as an advisor for BlockchainHub, a decentralized Think Tank and as a Connector for OuiShare. Finally, you might find him as the Organizer of events like GetDecentralized, Decentralized Web Summit among others.

Thomas Fürstner

General Secretary

Tom Fürstner is a research scientist and university professor with over 30 years of experience in formal logic, social economy theory and digital art. Tom is the founder and CTO of Riddle & Code, a company focused on developing dedicated hardware for the physical internet and public ledger systems.

These days, he is working on hardened server systems for operating BigchainDB and IPFS. The aim is to enable sustainable and resilient identity services in an emerging world of shared sovereignty between humans, machines, algorithms and protocols.

Elfriede Sixt


Elfriede Sixt believes in the disruptive potential of decentralized peer-to-peer networks and blockchains. She is curious to learn how industries and business models will change along this way.

Elfriede Sixt is a blogger and book author writing about crowdfunding, blockchains, and regulation. Her background is in Business administration and corporate finance. Besides that she is a founder of as well as ebit4u.

David Holtzman


David Holtzman is an information technology security expert, educator and activist. He started his career as a cryptographic analyst, military codebreaker, U.S. Naval Security Group submariner, and Soviet Manned Space Program analyst. Holtzman is an early-stage internet pioneer.

He was the CTO at Network Solutions when it managed the domain name system, where he oversaw the explosive growth of the commercial internet to more than 20 million domain names by the late 1990s. He is the author of Privacy Lost: How Technology is Endangering Your Privacy, and a regular commentator for major news media, including Bloomberg Television, BBC, CNN, The New York Times, Business Week, and The Washington Post.

Dr. Nina-Luisa Siedler


Dr. Nina-Luisa Siedler is a lawyer and partner at DWF Berlin with over 15 years of experience. She is interested in FinTech and decentralized technology, and her practice includes blockchain matters. She is an advisor to Blockchain Hub Berlin.

Dr. Siedler is specialized in structured finance, including credit and capital market instruments, especially acquisition and project financing, real estate transactions, asset-backed securities, structured cover bonds, debt loans, and corporate bonds.

Science & Research

The IPDB Foundation advances science and research.

The IPDB Foundation promotes science and research on the operation of scalable blockchain databases, the governance of decentralized systems, and the applications of blockchain technology.

The IPDB Foundation has taken a leading role in the Berlin blockchain community. We co-organized the 9984 Summit, a two-day conference in Berlin bringing together top blockchain thinkers from around the world. We co-organize the IPDB Meetup in Berlin. We have sent speakers to numerous conferences and events in Berlin and across the EU, and have published numerous blog posts on blockchain technology.

In the future we will continue to make our work available in many ways——hosting or presenting at conferences and workshops, publishing research results and technical papers, releasing open source software, and more. Everything we do will be made available online, for the benefit of the public.