Blockchain and the City Challenge

Organized by the Trusted IoT Alliance, the Blockchain and the City Challenge is designed to address use cases for decarbonized mobility and urban life. It is a follow-up to the Smart E-Mobility Challenge that concluded in May 2019.

The Challenge is championed by a group of eco-responsible, innovative companies, local communities, public services, and blockchain technology-oriented organizations who are active in the City of Lyon, France. The Challenge will feature two workshop/hackathons to be staged at La Ruche Industrielle,
an innovation hub in a former Bosch Rexroth factory in Venissieux (outside of Lyon). Winning teams will receive a cash reward and a Proof of Concept to be staged at LaRuche.

ENTER THE CHALLENGE!challenge wall

Winners of the Lyon Hackathon

The first hackathon took place on November 13-15, 2019. The Challenge is ongoing, so there will be more winners in 2020.

Grand Prize Winners
external team

Grand Prize

Second Place
external team

Second Place

Third Place
external team

Third Place

First Place
internal team

First Place

Second Place
internal team

Second Place

Third Place
internal team

Third Place

Third Place
Challenge Energizer Award

Most Fun Team

About the Challenge

Introductory Webinar - please watch.

The Blockchain and the City Challenge focuses on blockchain-based use cases for urban transportation, urban industry, decarbonized mobility and the various other related use cases combining blockchain, IoT and city life in large metropolitan areas.

The main goal of the Challenge is to jointly develop solutions which provide real world value-add to the many aspects of city life in the near future, including services for city life.

The Challenge is designed to enhance the journey of an inhabitant of a large city anywhere in the world (such as Lyon) in an attainable near future. This inhabitant will commute with multimodal urban transportation means, including smart parking, smart charging services. He or she may work in a typical working day in a light industry urban factory, a fablab, a repair shop, a logistic service, and so on.

The Challenge looks at a complete journey, and the infrastructure levering it. The context for constraints and attributes of city life in the Challenge are as follows:

The Challenge Infrastructure

The Challenge infrastructure is typically a set of decentralized marketplaces or data hubs, which can be used by different stakeholders according the requirements outlined above. It is important that the means of onboarding new partners are simple. In particular, they should not require the use of complicated and advanced APIs and data structures. They should fit in well with MS Excel-like data transfer mechanisms and with typical IT environments, including corporate firewalls and VPNs.

A number of interesting use cases can be built on this core infrastructure. For example:

Key concerns for all use cases: Connection of blockhains and things, ID management, confidentiality of privacy and commercial data, assessment of environmental and societal impacts.

challenge overview

The following Use Cases are "living," which means they are constantly evolving. They are designed to spur ideation and innovation as the Challenge moves forward.

Click on each to download the Use Case Summary:

Use Case 1: Mobility as a Service

Use Case 2: KYC and Distributed Identity

Use Case 3: Trusted Operations and Maintenance Data Management

Use Case 4: Smart Parking and Smart Charging

Use Case 5: Trucks and the City


The following organizations are generously contributing their time, money and technology to ensure a successful Challenge. Our thanks and appreciation to all of them!

principal partners
BoschEDFMetropoleINSALa RucheRenaultSNCFSystemXVolvo

Principal Partners may participate in some or all of the following activities:

Technology partners
Share and ChargeiExecConsensys

Technology Partners may participate in some or all of the following activities:

Watch the Consensys Webinar Replay

Watch the iExec and Share&Charge Webinar Replay


The following events are currently scheduled for the Blockchain and the City Challenge. Bookmark this page for frequent updates!

Note: The November 13-15 hackathon in Lyon was a first step in a process of solution ideation and development. In Lyon, each team submitted a preliminary project spec, an architecture and a model. For this phase of the Challenge, we required a solid blockchain architecture proposal and a good model. Following the hackathon, the Challenge will continue into 2020, allowing for further advancements of each submission.

The TIoTA Challenge Wall

Check out the latest updates from some of the innovative technology companies participating in our challenges.
To post, use #tiotachallenges.

Entry Process

Step 1 - Read & sign these documents.

Although the first hackathon in Lyon concluded on 15 November, the Challenge is continuing into 2020. You can enter here prior to the next hackathon.

The Challenge is open to vendors, organizations, teams and individuals worldwide. To enter the Challenge, please follow these three steps. Please bookmark this page for frequent updates. Please submit all documents to

The Jury for the Challenge includes: one representative each from: Bosch, EDF, Lyon Métropole, SNCF, Trusted IoT Alliance, and Volvo/Renault Trucks.

Challenge Overview - Please read.

Introductory Webinar - Please watch.

Use Case 1 Summary | Use Case 2 Summary | Use Case 3 SummaryUse Case 4 Summary | Use Case 5 Summary

Official Rules - Please read.

Prize Agreement * - Please sign and send to

Publicity Release * - Please sign and send to

* Your signature/confirmation is required.

Step 2 - Submit the Contestant Agreement.

Find the agreement and submission form here. Make sure you complete the form and hit "Accept," as this agreement is required to participate in the Challenge.

Step 3 - Complete the form below

Thank you! Your submission has been received!
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This form secures your place in the Challenge and identifies your entry with a Use Case. This will help to create Challenge teams. You will be able to revise your submission until the conclusion of the Challenge.

Email *
Organization *
ENTRY details
Please describe the solution you will provide (up to 300 words). Note: please indicate if you are entering as an individual and if you are open to teaming with others. If you are part of a team, please provide email addresses for your teammates.
300 words left
Use case(s) we will address (check all that apply):
Principal and technology partner solutions we will explore (check all that apply):
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