otpauth:// is a de-facto standard, since Google Authenticator uses it: https://github.com/google/google-authenticator/wiki/Key-Uri-Format https://github.com/goo

otpauth:// is a de-facto standard, since Google Authenticator uses it: https://github.com/google/google-authenticator/wiki/Key-Uri-Format https://github.com/google/google-authenticator/wiki/Key-Uri-... The TOTP QR codes decode to one of these URIs