Blockchain & Law – Working Group

The Blockchain & Law Working Group Berlin (BCLAW) is an informal group of lawyers, software developers, and entrepreneurs working with blockchain technology. In a series of meetings, the group has jointly identified a number of legal issues arising from the use of blockchain technology today and in the near future. The aim of the Blockchain & Law Working Group is to discuss those issues in depth within subgroups, based on a multi stakeholder approach. The results of our work will be shared openly with the rest of the world on this site and on our wiki. With our work, we strive to support the creation of a blockchain-friendly legal environment. That entails analyzing blockchain-hostile regulation, identifying omissions in law that cause legal insecurities, identifying opportunities to use blockchain in regulatory environments rather than as a subject of regulation and to come up with innovation-friendly solutions. The issues around which we have created subgroups are:

    Startups trying to operate as DAOs are in need of a legal framework that allows them to conduct business not only within the closed world of a blockchain network but to interact with the physical world, the world of traditional financial instruments and that of intellectual property.
    Legal implications of cryptocurrencies, incl. civil and tax law implications, as well as pending anti money laundering legislation which might render certain blockchain based business models unviable.
    Smart Contracts are incomplete. They need a legal layer to be compliant with today’s laws and regulations, as well as to capture the dynamic evolution of real world relationships.
    Blockchain Technology in its purest form is radically transparent. Privacy regulations make today’s Blockchain architecture difficult to implement for established corporates.
    License management for intellectual goods is ready for a complete overhaul and Blockchain technology might be the key.
    E-government services are gaining relevance in today’s world where consumers expect to access all kinds of services digitally.

We recently set up our WIKI. If you would like to contribute, simply register an account and start filling it with relevant content or contact Dr. Nina Luisa Siedler How to use this wiki:



As of today, the Blockchain & Law Group Berlin (BCLAW Berlin) consists of the following members.

  • Nina Luisa Siedler (DWF Law)
  • Florian Glatz (
  • Christoph Jentsch (
  • Greg McMullen (IPDB, BigchainDB)
  • Shermin Voshmgir (BlockchainHub)
  • Natalie Eichler (DWF Law)
  • Oliver Schmidt (KPMG Law)
  • Joachim Lohkamp (Jolocom, Ouishare, GETD)
  • Elad Verbin
  • Johannes Eichenhofer (University Bielefeld)
  • Sonja Kuchling (DWF Law)

International members who want to actively contribute are welcome to join our slack. We are open for new members, contributions and any other form of input that the law and blockchain community, respectively, are willing to share. The group is being led by Nina Luisa Siedler, contact her at if you are interested in what we do.


Our Publications

Blockchain relevant Legal Entities according to German Law
Legal and Compliance Issues of Blockchain Token Crowd Sales


Further Reading

Blockchain and Law in 2017
What are smart Contracts
Blockchain: Background, Challenges and Legal Issues


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