Platform for issuing and validating badges

Job ID: 32295914

Budget: $750 – $1,500 USD

I would like to build badge issuing and verifying platform based on open badge specifications.

Sample badging platforms can be seen here. https://badge.wiki/wiki/Badge_platforms

Open badger specification for service side https://www.imsglobal.org/sites/default/files/Badges/OBv2p0Final/index.html

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)

References: -
https://github.com/IMSGlobal/openbadges-specification/blob/develop/ob_v3p0/introduction.md - https://www.imsglobal.org/activity/digital-badges


Please provide a high level implementation plan with some rough architecture and the time and cost break down to be considered.