Metadata-driven blockchain platform

Platform Overview:

Platform Features: The document proposes a declarative and metadata-driven blockchain platform that leverages distributed ledger technology (DLT) in combination with a cloud computing environment.

Application Scenarios: The platform is particularly suitable for business scenarios that require a high degree of customization and flexibility, such as finance, supply chain management, healthcare, and other fields.

Core Components:

Blockchain Service Interface: Provides an interface that enables host organizations to interact with the blockchain on behalf of multiple tenants.

Blockchain Metadata Definition Manager: Allows users to define metadata for applications, including network participants, entity types, field definitions, etc., and trade these metadata as blockchain assets.

Smart Contract Executor: Responsible for executing smart contracts to verify whether transaction data meets the defined metadata requirements.

Operational Process:

Declaring Applications: Users declare new applications through a graphical user interface (GUI), including specifying network participants, entity types, and field definitions.

Metadata Transactions: The system generates blockchain assets containing defined metadata and trades them on the blockchain for use by all authorized network participants.

Data Verification and Transactions: Verify whether transaction data meets metadata requirements through smart contracts. Only after verification is passed will the transaction be added to the blockchain.

Indexing and retrieval:

Index building: The system builds indexes to speed up data retrieval, and the indexes can be stored on the blockchain or in the database of the host organization.

Efficient retrieval: Using the index, the system can quickly locate and retrieve data records stored on the blockchain without traversing the entire blockchain.

Data update and merge:

Incremental update: For data that is updated frequently, the system adopts an incremental update mechanism to cache the updated data and write it to the blockchain regularly.

Data merge: Before writing to the blockchain, the system merges the new data with the old data to form a complete data record.

Permission management:

Access control: The system supports fine-grained access control, allowing network founders to define the permissions of partner organizations, including the ability to read, write, and perform specific operations.

Multi-tenant support: The platform supports a multi-tenant architecture, and each tenant can act as a participating node in the blockchain with its own data and permission settings.

Scalability and compatibility:

Support for multiple blockchain protocols: The platform can support multiple blockchain protocols, including protocols defined by the host organization and protocols provided by third parties.

Integration with existing systems: Through APIs and database interfaces, the platform can integrate with the existing systems of the host organization to achieve seamless exchange and sharing of data.

Security and Auditing:

Data Encryption and Privacy Protection: The system supports data encryption and privacy protection mechanisms to ensure the security and confidentiality of sensitive data.

Immutable Audit Log: All transactions on the blockchain are permanently recorded to form an immutable audit log for subsequent auditing and tracing.

What are the main components of the platform?

The main components of the platform include blockchain service interface, blockchain metadata definition manager, smart contract executor, index building and retrieval mechanism, data update and merge strategy, and permission management system.

How do users declare new applications?

Users declare new applications through a graphical user interface (GUI), specifying network participants, entity types, and field definitions. These definitions are then converted into blockchain assets and traded on the blockchain.

How is data verified and written to the blockchain?

Data is verified by smart contracts to ensure that it meets the defined metadata requirements. Only after verification is the data added to the blockchain to form a new block.

What is the incremental update mechanism?

The incremental update mechanism is designed for data that is updated frequently. The system caches the updated data and periodically writes these updated data to the blockchain as a single transaction to improve the storage efficiency and performance of the blockchain.

How to manage permissions for network participants?

Network founders define permissions for partner organizations, including the ability to read, write, and perform specific operations. The system uses fine-grained access control policies to ensure that only authorized network participants can access and manipulate relevant data.

How does the platform support multiple blockchain protocols?

The platform is able to support multiple blockchain protocols, including protocols defined by the host organization and protocols provided by third parties. This enables the platform to flexibly interact and integrate with different blockchain networks.

How does the platform achieve security and privacy protection?

The platform ensures the security and confidentiality of sensitive data through data encryption and privacy protection mechanisms. In addition, all transactions on the blockchain are permanently recorded, forming an unalterable audit log for subsequent auditing and tracing.