How to build a secure Telegram payment bot with Bangladeshi mobile banking and international crypto verification.
Telegram payment bots let customers pay inside chat. For Bangladesh and international audiences, you typically combine manual verification (mobile banking) with optional automated crypto checks.
Recommended flow
- User selects product or invoice in the bot
- Bot shows amount, payment method, and account details
- User sends payment and submits transaction ID
- Admin or automated system verifies and confirms
- Bot updates order status and sends receipt
bKash & Nagad (Bangladesh)
Personal and merchant accounts require manual or semi-automated verification. Store transaction ID, sender number, amount, and timestamp. Reject duplicates and flag amount mismatches automatically.
Crypto (Binance, BEP20)
Use blockchain explorers or payment APIs to verify wallet deposits. Set confirmation blocks and timeout windows for pending payments.
Security essentials
- Never store API keys in bot source code committed to Git
- Rate-limit payment submissions per user
- Log all admin approve/reject actions
- Send customer receipts only after confirmed status
BDBOTS builds payment gateway bots with multi-method support. See our Telegram bot development service.
Related guides: security best practices · development cost · maintenance after launch