9. Appendices

9.1 Glossary of Terms

• Blockchain: A distributed ledger technology.

• Chaincode: Smart contracts in Hyperledger Fabric.

• Peer: A node in the blockchain network that stores the ledger.

• Orderer: A node that manages transaction ordering.

9.2 Technical Specifications

• Programming Languages: Reactjs, NestJS, Go

• Onchain Database (In hyperledger fabric): LevelDB, CouchDB

• Offchain Database: PostgreSQL

• Document Storage: S3 Bucket

• ORM: Prisma

• Deployment Tools: Kubernetes (AWS EKS).

This whitepaper provides a comprehensive overview of a QED application, detailing its architecture, implementation, and potential benefits. It serves as a foundational document for stakeholders interested in exploring blockchain solutions by creating tokens for real world assets and tracking its propagation to current owner.