For it is not enough to get a certificate, you would need to get a job to earn your living.
Fortunately, job offers are plenty to provide enough choice. A fresh blockchain specialist may get a job at Blockchain startups and consortiums, large tech firms, banks and other private sector firms, professional services firms or even the government. They seek blockchain developers, research analysts, consultants, product managers and many other specialists.
The salaries vary considerably. In the UK, a blockchain specialist may earn £40-60k. Large companies are willing to pay £100,000 - £150,000 to the experienced professional. In Russia, an expertise in cryptocurrency or blockchain may raise your wages by 25% from the average rate.
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Instead of a constant "mad rush to a fast payday", more people need to consider long-term options like a good education.