Ask HN: Blockchain Certified Courses

I'm an Agile project manager with 10+ years experience in platform and mobile applications development and delivery. I've always been interested in blockchain from the very start, even mining back when bitcoin was in the double cent figures (to my chagrin I lost that laptop with plenty on it).

I want to get back into blockchain dev with some kind of course or certification on my CV. Are there any widely recognised organisations that might provide these? The three I've found so far that seem to carry any weight are:

https://blockchain-training.co.uk/certifications/

https://www.blockchain-council.org/certifications/certified-blockchain-professional-expert/#1531892507336-b4edea1a-cff0

https://cognitiveclass.ai/courses/course-v1:developerWorks+BC0101EN+v2

https://cognitiveclass.ai/courses/course-v1:IBMDeveloperSkillsNetwork+BC0201EN+v2