Introducing the Interfacer Platform

While the global movement around fab cities, fab labs and the maker scene is growing, there is a digital infrastructure missing enabling a data-based circular economy on both the global and local sphere.

The interfacer team worked for addressing the need of this new infrastructure and proposes now an initial application of an open source software stack called Fab City OS.

Fab city is an innovative urban model that re-localises production to the city and its bioregional context, by empowering communities with the technology to build their own sustainable, innovative and regenerative urban futures.

The project aims to help fab cities to produce everything they consume on the basis of collaboratively developed and globally shared data as commons on the web. It promotes a green, resilient, and digitally-based mode of production and consumption that enables the greatest possible sovereignty, empowerment and participation of citizens all over the world.

Within the Interfacer Project, focused on the core component of this technology stack, the Interfacer Platform (aka Fab City OS Core), an innovative federated solution, tackling the challenges facing open-source hardware projects by mapping out the entire product lifecycle.

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Intefacer Project and
the Fab City Operating System

Born from the vision of Fab City Hamburg and its grassroots – bottom up community, Fab City OS is a collection of tools providing digital infrastructure for circular design and circular manufacturing in cities, promoting open hardware development and sustainable manufacturing.

Do you want to learn more about Fab City OS technology stack?

Access the free multimedia introduction to get an overview of the features and capabilities of the open source software developed and promoted by the Interfacer Project.

If you need more information about the project, fab labs or related events please fill out the form.

A digital and federated infrastructure upon which an economy of fab cities and regions will unfold covering the value chain from design over production to sales. Hosted by local fab city administrations, designs from the global commons may enter the local sphere where they can be converted into physical artefacts by fab labs and SMEs for users and customers of the products. 

Interfacer Platform is composed of Digital Product Passport, W3C DID and Creative Flows.


Digital Product Passport is a structured product related information, including data on sustainability to facilitate circular value retention and extraction activities such as reuse, remanufacturing and repairing
Stored into a distributed ledger, it will guarantee reliable and authentic information, helping to reduce production costs and bureaucracy.

DPP will also record design’s flows and development data to promote global collaboration, providing stronger motivations and opportunities to new contributors.

The DPP will add valuable data for recycling, disassembly and repair to improve sustainability and green practices.


The W3C DID standard defines a way to create and manage decentralised identifiers (DIDs) for entities such as people, organisations, devices, etc. on a blockchain or other decentralised systems.It empowers digital sovereignty and federated cooperation.


Fab City OS core presents a revolutionary economic model, called Creative Flows, supporting the sharing, tracking, and tracing of open hardware in a standardised form. 

This enhances collaboration and promotes fair agreements directly between users in a secure network. Globally connected productive communities are empowered to discover, remix, and improve designs and technologies like never before.

Creative Flows, utilising blockchain technology, facilitates fair revenue distribution based on contributions and agreements. Fab City OS will transform the traditional economic model, offering a decentralised and equitable solution.

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Any questions?

If you need more information about the project, fab labs or related events please fill out the form.



Project funded by the European Regional Development Fund (ERDF) in the context of the INTERFACER Project

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