How does data get processed within Datahash servers?

How does data get processed within Datahash servers?

Sub-domains are mapped to create an alternate route for first party data to be picked up from the client server. This data is SHA-256 encrypted (one-way hash) by the Datahash script. Once this encrypted data is received by Datahash server, it is just passed onto Snap via Conversions API. No data retention at any stage. Datahash can neither read, store and do anything with data.