Blockchain Cloud Service Management System

Blockchain Cloud Service Management System

Glossary

Term DefinitionBlockchain is a data structure that links data blocks in chronological order. Each block contains multiple transaction records and uses cryptography to ensure security. Blockchain Cloud Service (BCS) is a cloud computing-based blockchain platform service that provides tools and environments for building, running and managing blockchain networks. Distributed Ledger is a database that is shared, replicated and synchronized among multiple participants without the need for centralized management. Hyperledger Fabric is an open source enterprise-level distributed ledger platform that provides modular architecture and smart contract capabilities. Smart Contract is a piece of code stored on the blockchain that automatically executes predefined transaction protocols. Chaincode is a program code used to write smart contracts in Hyperledger Fabric. Peer Node is a participant in a blockchain network that maintains a copy of the blockchain ledger and performs transaction verification and smart contracts. Orderer Node is a node in a blockchain network that is responsible for sorting transactions and packaging them into blocks. Certificate Authority (CA) An institution responsible for issuing and managing digital certificates, which are used to verify the identities of participants in a blockchain network. Identity Cloud Service (IDCS) A cloud service that provides authentication, authorization, and user management capabilities. REST API A network application program interface based on the HTTP protocol for data exchange between clients and servers. Test questions

Short answer questions (2-3 sentences per question)

What is a distributed ledger and how is it different from a traditional centralized ledger?

Please briefly describe the architecture and features of Hyperledger Fabric.

What is a smart contract and what role does it play in a blockchain?

Please explain the role of peer nodes and ordering nodes in a blockchain network.

What is the role of the BCS gateway? How does it interact with the BCS Fabric?

What is the purpose of the object storage service in BCS?

What features does the BCS management console provide?

How to use IDCS for authentication and authorization in BCS?

What API operations does the BCS REST proxy service support?

Please describe the installation and instantiation process of chaincode in BCS.

Answers to test questions

A distributed ledger is a database that is shared, replicated, and synchronized among multiple participants without the need for centralized management. Unlike traditional centralized ledgers, distributed ledgers are decentralized, transparent, secure, and tamper-proof.

Hyperledger Fabric adopts a modular architecture, and its main components include member service providers (MSPs), sorting services, peer nodes, and chain codes. Its features include permission control, channel isolation, pluggable consensus mechanisms, and support for multiple programming languages.

A smart contract is a piece of code stored on the blockchain that automatically executes predefined transaction protocols. It ensures the automated execution of transactions, improves efficiency and transparency, and reduces disputes.

Peer nodes maintain a copy of the blockchain ledger and perform transaction verification and smart contracts. Sorting nodes are responsible for sorting transactions and packaging them into blocks, ensuring that all nodes agree on the order of transactions.

BCS Gateway is the interface for BCS to interact with external applications. It provides a RESTful API and converts client requests into gRPC calls to interact with BCS Fabric.

The object storage service in BCS is used to persistently store blockchain ledger data, chaincode code, and other runtime data to ensure data reliability and recoverability.

The BCS management console provides management functions for BCS instances, including monitoring network status, managing nodes, deploying and upgrading chaincodes, creating and managing channels, etc.

BCS uses IDCS for centralized authentication and authorization. Users can log in to the BCS console and REST proxy service with their IDCS accounts and obtain corresponding permissions based on their roles.

The API operations supported by the BCS REST proxy service include querying chaincode status, calling chaincode transactions, asynchronously calling chaincode transactions, getting transaction status, and getting BCS gateway version.

Installing chaincode in BCS requires copying the chaincode code to the Peer node, and instantiating the chaincode requires specifying the chaincode version, channel, and initialization parameters, and binding the chaincode to the specified channel.

Paper title

Compare and contrast BCS with other blockchain cloud service platforms (such as AWS Blockchain, Azure Blockchain Service).

Explore the advantages and limitations of BCS in enterprise applications and give examples to illustrate its applicable scenarios.

Analyze the security mechanisms in BCS, including authentication, authorization, data encryption, and privacy protection, and evaluate their security.

Design a practical application case based on BCS, such as supply chain management, digital identity authentication, or anti-counterfeiting traceability, and describe its architecture and process in detail.

Study the future development trends of BCS, such as cross-chain interoperability, performance optimization, security enhancement, and new function development, and explore its impact on the development of blockchain technology.