 San Francisco, California, Sept. 28, 2021 GLOBE NEWSWIRE -- RocketFuel Blockchain, Inc. OTC QB: RKFL RocketFuel or the Company, a global provider of payment solutions via bank transfers, Bitcoin, and other cryptocurrencies, today announced that it will present at the global blockchain investment conference CoinAgenda Europe, which is being held at Monaco between September 27-29, 2021 