Top 99 keynote speakers every event planner must know about
Hubilo Blog
FEBRUARY 25, 2020
Over 200,000 event professionals downloaded his books. He is certified by the American Board of Surgeons and licensed in New York, Connecticut, and Florida. In 2014, Antonopoulos authored the groundbreaking book, Mastering Bitcoin (O’Reilly Media), widely considered to be the best technical guide ever written about the technology.
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