OTP API for
Online Sportsbooks and Casinos
Run OTP verification for Vietnamese players without Twilio/Vonage suspending your account mid-tournament. Crypto-prepaid, no vertical review.
Pain points sportsbook teams hit
Mainstream CPaaS bans gambling at signup
Twilio, Vonage and MessageBird require explicit gambling-vertical approval that takes weeks and only succeeds with licensed entities. Vietnamese-facing operators are often unlicensed offshore — automatic reject.
High registration volume from tournaments + promos
A weekend Asian Cup promo can drive 5k new signups in 24h. CPaaS volume tier renegotiation kills the campaign. We charge flat per-OTP regardless of volume.
Withdrawal OTPs must reach offline-but-on-network users
Sportsbook payouts often happen while users have data off. Voice OTP via Viettel/Vinaphone reaches network-connected phones even with mobile data disabled — critical for cashout flows.
Why NEXO ROUTE fits
- Gambling-friendly terms — no vertical review at signup
- Voice OTP for cashout confirmations on data-off devices
- Flat $0.022 / delivered OTP — campaign math stays predictable
- Anonymous billing via USDT / USDC — no card statement footprint
- Webhook on every delivery state — auto-suspend signups on persistent OTP failure (anti-fraud signal)
Integration approach
Use OTP delivery success as a fraud signal: failed delivery on a freshly-registered phone is a high-confidence bot indicator. Pipe the webhook into your risk engine.
Sample · TypeScript
// Sportsbook signup verification
async function verifySignup(phone: string) {
const code = randomDigits(6);
// Send OTP
const send = await fetch('https://nexoroute.dev/api/v1/send-otp', {
method: 'POST',
headers: { 'Authorization': `Bearer ${KEY}`, 'Content-Type': 'application/json' },
body: JSON.stringify({ phone, code })
}).then(r => r.json());
if (!send.ok) {
// Failed delivery on fresh signup = strong bot signal
await riskEngine.flag(phone, 'otp_undeliverable');
throw new Error('phone unreachable');
}
// Stash and wait for user submission
await cache.set(`signup:${phone}`, code, 'EX', 300);
return { deliveryId: send.id };
}FAQ
Will I get into legal trouble for using NEXO ROUTE for gambling?
Legal status of online gambling in Vietnam is your responsibility — we are a Vietnamese-carrier OTP provider, not a licensed gambling vendor. We do not require you to declare your vertical.
What if my account does massive OTP volume during a tournament?
No volume cap, no warning calls. Wallet drains as you send; top up in stables. We have processed >10k OTPs/day from individual accounts without issue.
Can I see which OTPs failed and why?
Yes — every delivery in your dashboard shows status (queued/sent/delivered/failed) and carrier error message. Failed = automatic wallet refund.
Do you log the user phone permanently?
Phone + delivery row stored 30 days for billing dispute window, then purged. We do not log OTP code content.
Built for online sportsbooks and casinos
5 free test OTPs on signup. No card, no KYC, no vertical review.