Hypothetical problem, inspired by How to query Aggregate Root to react to event from other AR  How should an event sourced application handle data, where the license to that data can expire?Example: the model includes sensitive billing information; when an account is closed, the billing information for that client needs to be scrubbed from the system.Example: data is licensed from a 3rd party vendor; the agreement specifies that at then end of the license period, the data needs to be removed.
How do you combine licensed data and event sourcing?
event sourcing