Hyperledger Fabric

Over 100 million people around the world will go to sleep tonight without a roof over their heads.

Homelessness is a growing problem throughout the world, and industrialized nations like the U.S. and Canada aren’t immune. There are over two million people experiencing homelessness in North America alone, and without the right support services in place, that number will only increase.

Fortunately, technology companies are in the middle of a full-fledged technological revolution that is changing the way we deliver healthcare and social services. The Silver Linings Initiative is one such example.

A New Approach to Social Support: The Silver Linings Initiative

The Silver Linings Initiative is the world’s first blockchain-based digital identity and marketplace solution designed specifically to empower and connect those experiencing homelessness. Envisioned by Troon Technologies, the Silver Linings Initiative aims to combat two of the biggest challenges experienced by the homeless population:

1.     Identity verification and acquisition of government identification;

2.     Access to, and awareness of, social support services.

This is managed through a proprietary software application that combines a user-friendly UX with the power of the blockchain to create a safe, secure, and trustworthy system of social support.

As Paul Dube explains, “The power of the distributed technology offered by Hyperledger Fabric to configure a solution for the social non-profit industry is the ability to track a single source of truth. This can be shared across all entities servicing the homeless, and limits the revictimization of those already in vulnerable situations.” 

How Does It Work?

The Silver Linings app relies on a multi-pronged approach that combines biometric authentication, decentralized data management, and traditional telemedicine to create a support marketplace unlike any other. Key components include:

• Biometric sign-in features that guarantee secure access from any device;
• Decentralized data storage via a blockchain that keeps users in control of what information is stored and shared;
• Access to online marketplace resources geo-targeted to each user, including food, employment, healthcare, shelter, education, and more;
• Virtual consultations with medical professionals delivered via mobile app;
• Improved access to social programs for vulnerable populations requiring validated identity to participate;
• The ability to identify individual attributes for each ID that facilitates improved handling of special needs, cultural sensitivities and unique challenges;
• One single source of truth for an identity that can be holistically carried across social service entities.  

The Importance of Mobile Support Networks

It’s hard to overstate the potential that these social support solutions can have for improving health outcomes in populations experiencing homelessness. This is particularly true for mobile solutions.

Though mobile phones are often considered a luxury, most people experiencing homelessness still have access to them on a regular basis. In a survey of 421 such adults published in the Journal of Social Distress and the Homeless, 94% of respondents said they had their own phones. Given that people experiencing homelessness generally lack other essential resources, it’s clear that mobile devices have a role to play in distributing health and wellness services among these populations.

These sentiments are echoed by others who regularly work with people experiencing homelessness to deliver social support, such as Allen Baez, project manager for U.S.-based homelessness support service Mobile4All.

“Smartphones are incomparable tools for connecting people who are isolated, and empowering homeless and extreme-low-income individuals to access life-changing services and gain self-sufficiency,” said Baez.

The Silver Linings Initiative Advantage

The Silver Linings Initiative bridges the gap between homeless populations and essential social safety nets by examining the biggest challenges that homeless people face, and designing solutions around them.

For example, the United Way reports that one of the biggest hurdles to overcoming homelessness is, surprisingly, acquiring a government ID card. IDs are essential for receiving many of the social services designed specifically to benefit homeless populations, including government assistance, work placement, housing applications, medical care, and more. The Silver Linings Initiative tackles this roadblock in two ways.

1. The information provided through the application process guides applicants through the government ID process.
2. Once a blockchain-based ID is created, the individual owns that ID (as opposed to a government or institution). It’s existence and maintenance is not reliant on outside parties.

Additionally, by keeping all data in anonymous blockchain ledgers, users will be guaranteed confidentiality and privacy, no matter whose device they use or where they are when requesting care.

And while this is just one step of many towards eliminating homelessness, it’s an approach that taps into the existing resources of homeless populations, Canadian support networks, and Troon Technologies itself to provide a completely new type of care.

Lend your Support

If this initiative interests you, Troon would love to hear your thoughts. Please reach out to us for more information on how you can support the Silver Linings Initiative. Contact Paul Dube, Partner, Silver Linings Initiative, paul@troontechnologies.com.

About the Author

Paul Dube is Troon’s Chief Technology Officer and oversees all of Troon’s development work. Paul is passionate about solving problems using distributed technology to improve the lives of the most vulnerable populations, particularly improving access to a more holistic and sensitive social safety net. 

Blockchain is a distributed ledger technology that provides a shared, immutable, and transparent history to the participants in the network of all the actions that have happened. Currently, different types of blockchain technologies exist, including private permissioned implementations that allow governance of the network participants and secure management of sensitive data. 

Blockchain has already demonstrated its potential in numerous POCs and implementations in production in Switzerland and abroad. Deployments are live in various business areas such as supply-chain management, finance (e.g., payments in crypto-currencies, tokenization), healthcare data management, ticketing services, eVoting, cars and planes configuration and maintenance, among others. Increasingly, companies are moving past the initial stage of  testing whether  blockchain is a good solution to a specific business problem (i.e., developing a POC) and are starting the work of adopting this technology in production networks. 

The move from a successful POC implementation to a production deployment brings many added challenges such as ongoing management, integration (on both the technology and business process fronts), security and budgeting. Here are some key areas where advanced consideration and preparation can smooth a production implementation:

1. Deployment options for running and maintaining the blockchain nodes and other components of the blockchain network.

Blockchain technology is often employed to ensure transparent and secure transactions executed between parties without fully aligned interests. Instead of relying on a centralized “trusted” party, which can become a target for the internal and external cyber-attacks, parties opt to set up a distributed network. This blockchain network consists of replicated nodes that execute smart contracts – programs defined by the business logic of the application. Depending on the business requirements, a specific type of blockchain implementation (i.e., permissionless/permissioned, private/public, or hybrid) shall be chosen. This choice also impacts the network configuration and maintenance. When the nodes are located on premises, execution of smart contracts can be verified by the parties directly. However, infrastructure maintenance costs and shortage of specialists “in house” can complicate such an approach. The nodes can also be deployed in the cloud; multiple companies provide such services. Working with service providers simplifys management. However, it also requires careful selection of the provider(s) based on the sensitivity level of data that are being processed by the smart contracts, regulations, and physical location of the hosting data centers.

2. Set up or integration of identity management approach.

For the permissioned blockchain technology implementation, identity management service plays a crucial role. Often, even as a part of distributed ledger frameworks, identity management services are implemented in a centralized manner, which poses serious security threats and can become a single point of failure. Setting up a distributed identity management service, using blockchain-based approach for identity management (such as self-sovereign identity solutions) and implementing privacy-preserving approaches (using advance cryptographic primitives such as zero-knowledge proofs) are the approaches that must be considered for the real-world implementation. 

3. Transformation of  business processes into chaincode (smart contracts) 

Transforming paper-based contracts and business processes into computer programs can be challenging and may require compliance with domain-specific regulations (i.e., Drug Supply Chain Security Act in US, Falsified Medicines Directive of the European Union in the pharmaceutical sector). Making sure the business processes are properly transferred and are available for  verification and audits are cornerstone requirements for the successful integration of the blockchain. To understand and translate specifics of a company’s business area into smart contracts, collaboration between the company and blockchain specialists with the specific domain knowledge and legal expertise is required.

4. Data management approach.

Replication of the code execution between multiple parties brings transparency into blockchain implementations. At the same time, more parties may access the sensitive data that is required for the execution of the smart contracts deployed on the nodes. In the course of development of the blockchain, a number of approaches for hybrid data management have been proposed. These approaches assume that only part of the data is managed within the blockchain network, and most of the data, especially of a sensitive nature, is stored and processed locally. Private data collections, hardware security modules, data encryption are examples of approaches that aim to ensure data security and user privacy.

5. Estimation of the infrastructure and maintenance costs.

Once the above points are considered, and preliminary choices are made, it’s easier to estimate the effort and costs of implementing and maintaining a system. It is important to ensure integration and interoperability with other non-blockchain-based components. Detailed specifications of SLAs and timelines in the dynamic blockchain environment must not be overlooked.

Working with customers, we have found that Hyperledger Fabric, one of the most mature permissioned blockchain technology platforms implementations, is well architectured to help companies to make the leap from POC to a successful production deployment.

Hyperledger Fabric networks can be set up on the customer premises and in the cloud, including multi-vendor cloud environments. Deployment and maintenance of the robust and secure blockchain-based POCs and real-world systems can be achieved in close collaboration between the company and a vetted service provider that has deep experience helping enterprises successfully adopt Fabric.

With Hyperledger Fabric, business logic can be “translated” into the chaincode using one of the following general-purpose languages: Go, node.js, or Java. Fabric also provides a set of built-in tools for sensitive data management, such as private data collections and channels, as well as flexibility in the choice of identity management approach, such decentralized identity management and anonymous credentials. 

Being aware of the challenges, knowing how to address them, and working together with a Hyperledger Certified Service Provider, like Swisscom, are key components to the successful deployment of a blockchain-based project in production.