# Use Case Implementation

### Application of Blockchain for DATA TRUST in ENTERPRISE DATA ENGINEERING

Businesses, Regulatory compliance (e.g., GDPR) often need a Data Lake / Data Foundation / System-of-Engagement to have Comprehensive Data Trust pillars (audit, provenance, Lineage, Verifiability). But, the Organization (a large FinTech Org) wants to have Future-gen architecture which can provide

* enablement of the Comprehensive Data Trust pillars (audit, provenance, Lineage, Verifiability)**@port-of-entry** of System-of-Engagement
    
    ```plaintext
      - auditing capability to keep track of critical data 
      - Data Provenance 
      - complete history of assets / Data Lineage
      - Verifiability : a verification mechanism to verify integrity of past records
    ```
    
* Post enablement of DATA TRUST pillars @port-of-entry, it should be able to trigger serverless-processing or serverless-workflows for
    
    ```plaintext
      - caching the history for querying in Amazon Elasticsearch, 
      - transforming and loading the data into an Amazon Redshift cluster, and 
      - also storing the data in an Amazon S3 data lake.
    ```
    
* for critical events/ datasets originating from **Streaming sources** / **Batch sources**
    
    ```plaintext
    - for critical events originating from Streaming sources, such as "*credit* and *debit transactions* across bank accounts", and also
    - for critical datasets originating from Batch sources, such as "*history of assets* for Loan lending to Orgs/customers like vehicle maintenance records /or/ Lending application records".
    ```
    

#### Solution Architecture using AWS QLDB

Architecture Solution using QLDB for above use case application:

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1627457512313/x9V9vZEya.png align="left")

### Application of Blockchain for CIRCULAR SUPPLY CHAIN with IoT

Business Techo Problem statement

* CIRCULAR SUPPLY CHAIN with IoT
    
* Continuous Monitoring & Notification for SAFE ENVIRONMENTAL CONDITION for raw crop produce SHIPMENTs in TRANSPORTATION
    
* right credit attribution to the Farmers
    
* Enabling **SMOOTH ADOPTION** of blockchain (HL FABRIC)
    
    * how to right size the load for blockchain?
        
    * How to cost optimize the adoption of blockchain?
        
    * how to manage, deploy, auto-scale, descale container Blockchain network (HL FABRIC)?
        
    * how to monitor the nodes used for blockchain network cluster?
        
    * how to secure member's keys created for each member for accessing blockchain network? Possibly securing/fortifying keys in hardware using AWSCloud HSM.
        

*Please Note* The fundamental technology of blockchain is cryptography. Cryptography works on KEYS. Hence, Keys become very important part of the solution.

#### Solution Architecture using Hyperledger FABRIC DOCKER AWS EKS IOT HSM

Architecture Solution using AWS Managed Blockchain for above use case application:

![image.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1627457538712/22fiuFBDP.png align="left")

Solution Architecture

# Reference

\[1\]https://www.youtube.com/watch?v=gAxK6zYrfxI

\[2\] https://www.youtube.com/watch?v=mI6-qRagn\_Q

\[3\] https://www.youtube.com/watch?v=5CwIt-Alqhg

\[4\] https://www.youtube.com/watch?v=WAIOBeQA2QQ

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