# 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.

[<br>](https://qspear.gitbook.io/qed-white-paper)


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