Astra

Astra is a platform for collecting and storing women's health data. It is built on top of the Akave and Vana protocols, and includes a telegram bot and mini app with Self.xyz for zk-proof identity verification.

Can switch to a feature based architecture to scale.

To Do For V2

• Implement logging
• Set up production environment
• Optimize localized notifications in telegram

Service Architecture

Data Collection

Data is collected from a telegram bot and mini app. The bot is used to collect user data and the mini app is used to collect health data. This process is creates a web2 experience for users.

Data Flow

The application handles health data through multiple services:

1. Akave Service (services/akave.js)

   • Handles encrypted data storage on O3 (Object Storage)
   • Uses OpenPGP encryption for data security
   • Maintains data integrity through consistent encryption/decryption processes
   • Stores both health profiles and daily check-ins

2. Vana Service (services/vana.js)

   • Manages data contribution to the Vana data liquidity pool
   • Handles file registration and permission management
   • Implements TEE (Trusted Execution Environment) proof submission
   • Manages reward claiming for data contributions

Upload Process

Akave Upload Flow

1. Data is first converted to a File object
2. File is encrypted using OpenPGP with user's signature
3. Encrypted data is uploaded to O3 storage
4. Returns a signed URL for future access

Vana Upload Flow

1. Takes the O3 storage URL from Akave
2. Registers the file with the Data Registry contract
3. Requests contribution proof from TEE Pool
4. Submits proof to TEE with:
   • Fixed IV and ephemeral keys for consistent encryption
   • Permission validation parameters
   • Encrypted encryption key for TEE
5. Claims rewards upon successful proof submission

Security Features

• Consistent encryption parameters across services
• Permission-based access control
• TEE validation for secure data processing
• Checksum verification for data integrity

Queue System

The application uses a Bull queue system to handle:

• Asynchronous data uploads
• Retry mechanisms for failed uploads
• State management between upload attempts
• Parallel processing of health and check-in data

This architecture ensures:

• Data privacy through encryption
• Reliable data storage and contribution
• Consistent reward distribution
• Scalable processing of user data

Dev Notes

Vana

Proofs and contracts are stored in different repositories.

Akave O3

Summary Table:

Action	Command Example
List buckets	aws s3 ls --profile akave --endpoint-url https://o3-rc2.akave.xyz
Make bucket	aws s3 mb s3://asterisk-checkin-data --profile akave --endpoint-url https://o3-rc2.akave.xyz
List contents	aws s3 ls s3://my-bucket --profile akave --endpoint-url https://o3-rc2.akave.xyz
Remove bucket	aws s3 rb s3://my-bucket --profile akave --endpoint-url https://o3-rc2.akave.xyz