Blockchain Transaction Storage and Retrieval System

Blockchain Transaction Storage and Retrieval System

Key Glossary

Term Definitions Blockchain A distributed database that uses cryptography to ensure data security and immutability. Smart Contracts Programs stored on the blockchain that are automatically executed when preset conditions are met. Hash An algorithm that maps data of any length into a fixed-length string to verify data integrity. Encryption Converts information into a form that can only be read by authorized parties to protect data security. Distributed storage A technology that stores data in multiple physical locations to improve data availability and security. Merkle tree A data structure used to efficiently verify the integrity of large blocks of data. Providers Parties involved in the supply chain, such as manufacturers, retailers, logistics companies, etc. Elasticsearch An open source search engine used to quickly retrieve large amounts of data. Inverted index A data structure that maps keywords to a list of documents containing the keyword for fast retrieval. API (Application Programming Interface) A set of rules and specifications that define how software components interact with each other, making it easier for different systems to integrate. Short Answer Questions

What problem does this system aim to solve?

The system aims to solve problems such as difficulty in sharing data between parties in the supply chain, low data credibility, and inconvenience in real-time data search.

How does the system use blockchain technology?

The system uses blockchain technology to store the hash value and signature of transaction information to ensure the immutability and verifiability of data.

How does the system process the transaction information received from the provider?

After receiving the transaction information, the system will encrypt it, then aggregate the encrypted transaction information into groups, calculate the hash value of each group and generate the corresponding signature, and finally broadcast the information to the blockchain network.

What is the relationship between checkpoint hashes, intermediate hashes and root hash?

After the system groups the encrypted transaction information, it calculates the hash value of each group, which are called checkpoint hashes. Then the checkpoint hashes are grouped again and the hash value of each group is calculated, which are called intermediate hashes. Finally, a final hash value is calculated based on the intermediate hashes, which is called the root hash.

How does the system ensure that the transaction information stored in the distributed storage system has not been tampered with?

The system will periodically recalculate the hash value and signature of the transaction information stored in the distributed storage system, and compare the calculation results with the information stored in the blockchain to verify data integrity.

How do users search for transaction information?

Users can submit search requests through an application or web application, specifying features or keywords of interest, and the system will use search engines (such as Elasticsearch) to find matching transaction information.

How does the system ensure that users can only access transaction information that they are authorized to access?

The system will authenticate users and filter search results based on their permission information to ensure that users can only access information that they are authorized to access.

What is a smart contract and how does the system use it?

A smart contract is a program stored on a blockchain that is automatically executed when preset conditions are met. The system can use smart contracts to automate certain processes in the supply chain, such as payment, shipment, etc.

How does the system handle compatibility issues between different blockchain networks?

The system can generate smart contract code that meets its specifications for each blockchain network and use cross-chain technology to pass information between different blockchain networks.

How does the system support different types of supply chain contracts?

The system can provide a variety of contract templates. Users can choose the appropriate template and modify it according to actual needs. The system will automatically generate the corresponding smart contract code based on the template.

Essay questions

Discuss how the system can improve the transparency and efficiency of the supply chain.

Analyze the advantages and challenges of the system in terms of data security and privacy protection.

Compare the advantages and disadvantages of the system with traditional supply chain management systems.

Explore the application scenarios and potential value of the system in different industries.

Predict the future development trend of the system and its impact on supply chain management.