> For the complete documentation index, see [llms.txt](https://developer.paywall.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.paywall.one/payment-orchestration-integration-document/alternative-methods-apm/otp-based.md).

# OTP Based

- [1. Confirm Payment](https://developer.paywall.one/payment-orchestration-integration-document/alternative-methods-apm/otp-based/1.-confirm-payment.md): This is a method you can use for payments initiated with connected APM providers (OTP-Based). Through this method, you can confirm payments with OTPs delivered to users.