Abstract: A solution for efficient and secure automated age assurance checking in association with a third party workflow involving an interaction between a user having an associated email address, and a target service. A request to estimate an age of the user is received and includes the email address. In response, the system issues a query to one or more data sources, each data source being of a different type and having an age attribute associated therewith. The data source(s) return responses to the queries. The system then associates an age attribute (typically, a minimum age) to each indication received from each data source queried. Based on a frequency of occurrence of the indications and the associated age attributes, a digital footprint that includes an estimate of the individual's minimum age is derived. A response (e.g., the estimated minimum age) to the request is then returned to the third party workflow.