Registration flow engineered segundo conversion rate optimization principles: progressive disclosure pattern minimizing initial friction (3-field form: email, password, currency), social signup options (Google OAuth, Facebook Connect, Apple Sign-In reducing friction via pre-populated data), e gamified onboarding sequence introducing platform features incrementally. KYC (Know Your Customer) compliance utilizes tiered approach: Level 1 (email verification only, R$1.000 monthly withdrawal limit), L