Exora Cryptocurrency Exchange
A secure cryptocurrency exchange platform designed around financial integrity, user security and operational control.
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The Problem
- Secure user access and authentication
- Reliable financial records and ledger integrity
- Controlled deposit and withdrawal workflows
- Administrative oversight and monitoring
- Consistent transaction processing
- Clear separation between user and operational permissions
The Solution
- Secure authentication architecture with robust session handling
- Role-based access control for administrative and user boundaries
- Double-entry ledger system for accurate financial tracking
- Maker-checker approvals for sensitive operational actions
- Idempotent financial operations to prevent duplicate processing
- API-driven frontend and backend separation
Core Features
Key capabilities engineered to solve the operational requirements.
Account Security
Multi-layered authentication and secure session management.
Market Experience
Real-time portfolio and market data visualization.
Financial Ledger
Immutable double-entry accounting system.
Maker-Checker
Dual-approval workflows for critical administrative actions.
Transaction History
Comprehensive audit trails for all user and admin actions.
Operational Controls
Dedicated portals for platform monitoring and oversight.
Interactive Prototype
Experience the user interface and interactions directly in your browser.
Technical Architecture
A high-level view of the system components and data flow.
User Interface
Next.js frontend with isolated user/admin roles.
API Layer
Secure REST endpoints with strict validation.
Authentication & RBAC
Token-based access control.
Trading & Wallet Services
Core business logic and matching.
Double-Entry Ledger
Financial state management.
PostgreSQL
Primary relational database.
Background Processing
Asynchronous task workers.
Cloud Infrastructure
Scalable AWS deployment.
Security & Reliability
Engineering a secure platform requires strict enforcement at every layer. We applied industry-standard patterns to ensure data integrity, safe access, and reliable operations.
- Password security with strong hashing algorithms
- Token rotation and secure cookie management
- Role-based permissions enforcing least privilege
- Idempotency keys for all financial state changes
- Ledger integrity checks and balances
- Approval controls for sensitive data modifications
- Strict environment configuration management
- Automated production safety checks
Technology Stack
The core technologies and frameworks utilized to build this platform.
Key Engineering Decisions
Critical architectural and design choices made during development.
Double-Entry Ledger
Implemented a double-entry ledger instead of simple balance mutation to ensure absolute financial integrity.
Maker-Checker Approval
Required dual authorization for sensitive operations to prevent single-point compromises.
Idempotent Requests
Enforced idempotency on all financial endpoints to safely handle network retries.
Separated Permissions
Strictly isolated user and administrative permission boundaries at the API level.
Development Process
The structured KASH engineering lifecycle applied to this project.
Discover
Requirements analysis and operational scoping.
Design
Architecture planning and secure interface design.
Architect
Data modeling and infrastructure setup.
Build
Iterative full-stack engineering.
Test
Automated testing and security validation.
Deploy
CI/CD pipeline execution to production.
Improve
Continuous monitoring and optimization.
Previous Project
BSC Crypto Launchpad
Next Project
SchoolSync
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