Having only completion certificates might demotivate the users to focus on learning as they are being incentivized for completing the tracks. Hence based on the success of this feature, different versions of the certificate should be created:
Proficiency Certificates: These certificates should be awarded based on the learners score in the learning track for example exemplary performance certificate for scoring > 80% score Mastery Certificates: These certificates should be awarded on completing say 100 days of consistent practice or 100 hours of coding etc. Interms of value, mastery certificate>proficiency certificate>completion certificate
There should be a “Wall of fame” section where all these certificates will be listed and user should clearly see the qualifying criterion for thee certificates