SKAdnetwork interaction process for adnetworks

I'm reading Apple docs about ad networks and their validation for the SKAdnetwork framework chain: https://developer.apple.com/documentation/storekit/skadnetwork/verifying_an_install_validation_postback


And I cannot understand the following: if we're a network with real traffic from our partners from both sides: affiliates and advertisers - should we write our own SDK and give it to our affiliates to "sign" every single conversion, is it a necessary step? Out of the doc - it's not clear at all, how to interact with their framework as intermediary ad network.

Affiliates <-----> WE <------> Advertisers

What is the general workflow here for intermediate side?

For example, this implementation:
https://stackoverflow.com/questions/63612103/how-to-verifiy-install-validation-postback-skadnetwork-using-c

After we verified data:
Code Block
bool result = eCDsaCng.VerifyData(data, signatureBytes);

where is this result supposed to go next? To end-point publisher? In which format? How?

The most close diagram to the workflow I suppose I saw from MoPub:

developers.mopub.com/dsps/integration/ios14proposal/

But again, it still unclear, why both advertiser & affiliate are in one box together there?
SKAdnetwork interaction process for adnetworks
 
 
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