Merge pull request #30 from andorsk/ask/problem_statement

added problem statement

spec.md

@@ -77,6 +77,17 @@ effective discovery layer for both legacy and new trust registry services. The
 intended audience includes individuals or entities seeking to improve service
 interoperability with their existing services or on new services.
 
+### Problem Statement
+
+Current endpoint systems lack a clear method to identify the protocols a service
+supports. The DID Core Spec’s Service Endpoint type field is not sufficiently
+expressive for endpoints to fully understand what protocols a service endpoint
+supports. This specification addresses this gap in the DID Core specification by
+introducing a straightforward way for endpoints to indicate support of a
+protocol or service using a structured Profile Document Model. These documents
+are reusable, decentralized, and expressive documents that allow service
+providers to connect and interoperate with endpoint systems with less friction.
+
 ### Example
 
 In this example, we illustrate a practical example of profiles. We have a