Data Flow

Data Flow Diagrams

KYC Verification Flow

The Know Your Customer (KYC) verification process is a critical component of the Buburuza platform, ensuring regulatory compliance and user identity verification through automated document processing and verification.

Flow Overview

Step-by-Step Process

1. Document Upload

  • User uploads identification documents through the mobile application

  • Documents include government-issued ID, proof of address, and selfie verification

  • Multiple document formats supported (PDF, JPG, PNG)

2. KYC Initiation

  • Mobile app forwards documents to the KYC Service

  • Service generates unique verification session ID

  • Initial document validation and format checks performed

3. Document Storage

  • KYC Service securely stores documents in AWS S3

  • Documents encrypted at rest using AES-256 encryption

  • Access logs maintained for compliance and audit purposes

4. Identity Verification

  • KYC Service sends documents to Sumsub for verification

  • Sumsub performs automated document authentication

  • Advanced AI algorithms detect document tampering and fraud

5. Verification Result

  • Sumsub returns comprehensive verification result

  • Result includes verification status, confidence score, and detailed analysis

  • Additional checks for sanctions lists and PEP (Politically Exposed Persons)

6. Status Update

  • KYC Service updates user verification status in database

  • Compliance records maintained for regulatory reporting

  • User profile marked as verified or requiring additional documentation

7. Completion Notification

  • KYC Service notifies mobile app of completion

  • User receives real-time notification of verification status

  • Account features unlocked based on verification level

Transaction Flow

The transaction processing system handles natural language commands through AI/NLP processing, ensuring secure and efficient financial transfers with blockchain integration.

Flow Overview

Step-by-Step Process

1. Natural Language Input

  • User speaks or types natural language command: "Send $100 to John"

  • Mobile app captures voice input or text message

  • Command can include variations like "Transfer", "Pay", "Send money to"

2. Intent Parsing

  • Mobile app forwards command to AI/NLP service

  • Natural language processing extracts key components:

    • Action: Send/Transfer

    • Amount: $100

    • Recipient: John

    • Additional context if provided

3. Structured Request Creation

  • AI/NLP converts natural language to structured API request

  • Request includes sender ID, recipient identifier, amount, currency

  • Intent confidence score and parsed entities included

4. API Gateway Processing

  • API Gateway receives structured request from AI/NLP service

  • Authentication and authorization validation performed

  • Request routing to appropriate Transaction Service instance

5. Transfer Processing

  • Transaction Service receives and validates transfer request

  • Business logic validation (amount limits, recipient verification)

  • Fraud detection algorithms analyze transaction patterns

6. Balance Verification

  • Transaction Service queries database for current account balance

  • Insufficient funds check and available credit verification

  • Account status and transaction limits validation

7. Balance Confirmation

  • Database returns current balance and account status

  • Transaction Service confirms sufficient funds available

  • Hold placed on funds for transaction processing

8. Blockchain Recording

  • Transaction Service submits transaction to Arbitrum L3 blockchain

  • Smart contract execution for transaction validation

  • Immutable record creation for audit and compliance

9. Transaction Hash

  • Blockchain L3 returns unique transaction hash

  • Hash serves as permanent transaction identifier

  • Used for transaction tracking and verification

10. Balance Updates

  • Transaction Service updates sender and recipient balances

  • Database transaction ensures atomic balance modifications

  • Transaction history records updated with full details

11. Success Response

  • Transaction Service confirms successful completion

  • Response includes transaction ID, timestamp, and final balances

  • Mobile app receives confirmation with transaction details

12. User Notification

  • Mobile app displays "Transfer complete" message to user

  • Push notification sent with transaction summary

  • Transaction appears in real-time transaction history

Error Handling

KYC Verification Errors

  • Document Quality Issues: Automatic retry with user guidance

  • Verification Failures: Manual review process initiated

  • System Timeouts: Graceful degradation with status updates

Transaction Processing Errors

  • Insufficient Funds: Real-time balance check with clear error messages

  • Network Issues: Automatic retry with exponential backoff

  • Blockchain Congestion: L2 fallback with cost optimization

Monitoring and Analytics

Real-Time Monitoring

  • System Health: Continuous monitoring of all service endpoints

  • Performance Metrics: Response times, error rates, and throughput tracking

  • Security Events: Real-time fraud detection and security incident alerts

Business Analytics

  • Transaction Patterns: User behavior analysis and spending insights

  • Verification Metrics: KYC completion rates and document quality trends

  • Operational Efficiency: Service performance optimization and capacity planning

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