I’m after a complete, production-ready payment gateway website that I can brand as my own. The core engine should already be built; I only want to customise colours, logo and domain, not start coding from scratch. What the platform must already handle • Payment processing for both credit/debit cards and cryptocurrency, with real-time authorisation and settlement. • Separate dashboards for merchants, customers and administrators, plus a white-label layer so I can spin up new branded instances without touching the core code. • Built-in fraud detection rules or a pluggable module that automatically flags or blocks suspicious activity. • Recurring billing logic for subscriptions, including automated retries and customer notifications. • Multi-currency support: show local prices at checkout, convert and settle in the currencies I define. Technical needs Your system should follow PCI-DSS best practices, expose a REST or GraphQL API for server-to-server calls, and include a JavaScript/SDK option for front-end drop-ins. A sandbox environment and clear API documentation are essential so my developers can integrate quickly. Responsive UI, webhook events, and role-based permissions round out the checklist. Deliverables 1. Live demo URL or video walkthrough that proves all the features above work. 2. Source code or licensed build ready to deploy, plus database schema. 3. Step-by-step installation and branding guide. 4. API docs (PDF or online) and sample integration scripts. 5. Warranty period for bug fixes and any setup assistance agreed upon. Please outline in your proposal how your existing platform already meets these points, note any third-party dependencies, and provide a realistic hand-over timeline.