MyHealthMyData (MHMD): Deliverable 6.9 - Blockchain Analytics (2)

This document corresponds to the Deliverable D6.9 Blockchain Analytics (2), based on the work done in T6.2 and T6.3. D6.9 is an update of the previously submitted D6.8 and will illustrate the blockchain usage thanks to illustrative and eye-catching analytics. It will serve the purpose of feeding the project Website and marketing materials.
The task T6.2 Blockchain Assessment, Prototyping and Integration consist into assess existing blockchain technologies and select an appropriate candidate for implementation. Particular emphasis will be brought to Ethereum and the Hyperledger technologies. Scalability will be a key point for the proposed infrastructure and several data sharing, data indexing and (in memory) parallel processing techniques will be considered.
On the other hand, the task T6.3 Blockchain Infrastructure Deployment and Test consist in the deployment of the technology selected in task T6.2 over the physical infrastructure of participating centres. More specifically, hospitals such as OPBG, DHZB, GOSH will be installed and parameterized as the pillar nodes of the system. Others will join at a later stage as the network will propagate in the community. A software package will be released periodically that will allow external centres to join in. It will comprise the blockchain mining service, API, the Data Catalogue (PID indexing) and core libraries from WP4. Once the blockchain infrastructure is deployed, scale-up tests will be operated with synthetic data also from WP4, to validate the overall infrastructure robustness, performance, and ad equation with the initially identified requirements.
This document is organized in seven sections. The section 1 corresponds to the scope of the document and section 2 is an introduction about what is blockchain and how we can obtain data from it. Then in Section 3 we describe the components of Hyperledger involved in transaction flow and data storage. In Section 4 we introduce the concept of chaincode to manage and develop applications on the blockchain. Then, in Section 5 we introduce a description of our implementation to feed the data analytics module.
In Section 7, a new tool named the Blockchain Explorer is presented: it provides different information about the blockchain content.