BCTECH LIST –  A directory Index of businesses working with Blockchain Technology

Overview of company, product, services, contact details and more.


Headquarters 116 Mariahilfer Straße Wien Vienna 1070 Austria Telephone: Austria: +43 1 3105555 Website: www.riddleandcode.com

Biographical Info

RIDDLE&CODE is Europe’s leading company for blockchain interface solutions. Its hard and software stacks enable companies to master the challenges of our digital society such as machine identity, product provenance and supply chain management.

riddle&code connects the blockchain technology to real world objects in an uncompromising way.  Its innovative first class solution is the so called ‘tagtok’, which turns physical objects into blockchain nodes.

riddleandcode company information


Thomas Fuerstner founded Riddle&Code in 2015, in Vienna, Austria’s capital city.  Initially trained as political economist at the Vienna University of Economics and Business, he became early on an expert in artificial intelligence implementing expert systems for financial institutions throughout Europe. Over the last 25 years continuously involved in research and development projects and innovation design projects. The Headquarters is currently located in Vienna.  Thomas resides and works out of Malta.

In 2017, partnering with Samsung’s Artik cloud network, they launched ‘tagtok’ to enable any physical object to become a blockchain node.

Since its foundation, RIDDLE&CODE has been successfully working with international companies and institutions.  Clients include:

riddleandcode company clients


RIDDLE&CODE developed its own hard and software stacks to combine highest security standards with the potential of Blockchain technology.  They are providing the infrastructure for the sharing and machine economy.