How does your solution differ from JupyterHub + ottergrader or nbgrader? What about Kaggle Learn?

From taking the Udacity AI Programming in Python course, it looks like Udacity has a Jupyter Notebooks -based LMS LRS CMS platform.

How does your solution differ from the "Quant Platform" which hosts [Certificate in] "Python for Finance": https://home.tpq.io/pqp/

Do you award (OpenBadges) educational credentials as Blockcerts (W3C VC Verifiable Claims, W3C DIDs Decentralized Identifiers,) with blockchain-certificates/cert-issuer? https://github.com/blockchain-certificates/cert-issuer#how-b...