Every tool.
One platform.
WhichOtp is engineered for teams that need reliability, operators that need control, and resellers that need margin. Here is what is under the hood.
Verification Engine
Real-time SMS delivery
Sub-2-second average delivery via WebSocket push. No polling. Your code appears the instant it arrives.
500+ supported platforms
WhatsApp, Telegram, Google, Apple ID, all major crypto exchanges, social networks, fintech apps, and more.
Automatic number rotation
If a number has been used or flagged, the system automatically retries with a fresh number from the pool.
Rental numbers
Hold a number for an extended period for platforms that require repeated SMS access.
Security & Compliance
TOTP two-factor authentication
Time-based one-time passwords via Google Authenticator or Authy on all accounts, enforced or optional.
AES-256 key encryption
All API provider credentials are encrypted at rest. Keys are never stored in plaintext.
HMAC webhook validation
Every incoming webhook is signature-verified before processing. Spoofed payloads are rejected at the edge.
Session audit log
IP address tracking, device fingerprinting, and full session management with remote revocation.
Payments & Wallet
Dual-wallet architecture
User balance is isolated from provider accounts. Deposits, deductions, and refunds are all transactional.
Korapay & Stripe
Local bank transfers, mobile money (Ghana, Nigeria, Kenya), and international card payments.
Crypto via Cryptomus
USDT, BTC, ETH, and 20+ other cryptocurrencies. Wallet confirmed instantly on-chain.
Promo codes & bonuses
Deposit discount codes with custom bonus percentages, expiry dates, and usage caps.
Reseller & Admin Tools
Provider adapter system
Add any SMS API by implementing a single interface. Built-in support for TextVerified V2, with more adapters coming.
Service markup engine
Import provider services and set percentage markups globally or per-service. Selling price calculated automatically.
RBAC staff permissions
Role-based access control. Support staff see only tickets. Finance staff see only payments. You control access.
Email campaigner
Send bulk emails to all users or targeted messages. Full SMTP configuration via the admin panel.
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