I would like to build badge issuing and verifying platform based on open badge specifications.
Sample badging platforms can be seen here. [login to view URL]
Open badger specification for service side [login to view URL]
I need the service to be developed using java or kotlin.
Badges can be issued from web.
People getting the badges should be able to see the badge on mobile app. (flutter)
[login to view URL] - [login to view URL]
Please provide a high level implementation plan with some rough architecture and the time and cost break down to be considered.