Deeplink Parameters

3. Deeplink Parameters

• deep_link_value: exchange_auth
• af_sub1: code (short-lived, one-time)
• af_sub2: state (random string for anti-replay)
• af_sub3: slug (integration identifier)
• pid / c: optional attribution parameters

Example:

https://link.cryptopass.com/XXXX?deep_link_value=exchange_auth&af_sub1=CODE123&af_sub2=STATE123&af_sub3=myexchange&pid=myexchange&c=exchange_campaign

3.a. When to show the deeplink

Show the deeplink only if SumSub confirms the wallet is non-custodial and not registered in SumSub.

Important: code and state must be one-time and have a short TTL.