Raffle Platform — Manual Payment Verification

Production raffle platform for a Dominican car dealership: ticket reservation with automatic expiration, bank-transfer proof reporting with manual review, a referral program with anti-fraud cycle detection, and an admin panel with KPIs, push notifications, and automatic email confirmations. Self-hosted infrastructure on a VPS (SSL-enforced Postgres, scoped MinIO credentials, fail2ban) with automated weekly backup reports via n8n.