You can consult the consent data (explicit and implied) of your contacts using different tools. You can use the contact search (to view a consent for all contacts) or a contact's profile (to see the opt-ins of a specific contact). These 2 tools are useful to detect problems with consents or to see the consent status of the contacts (subscribed, unsubscribed or neutral).
Contact Search
You can use the contact search to display the list of all contacts with a specific opt-in:
You can also include a search criterion for the opt-in last update date.
→ Learn more about contact search
Contact's Profile
The profile of a contact presents a section for consents, which has a history of explicit and implied consents: