The concept and the very word ‘Bitcoin’ shall always remain synonymous with Hal’s name.
Even if he was not the real originator and author of this futuristic currency (he never actually claimed so), yet Bitcoins would never have been transformed into practical reality had it not been to Hal Finney’s quick and proactive approach.
Hal made the very first Bitcoin transaction thereby strongly conveying his own conviction in the practical use and real-term value of this unique crypto-currency.
He thus ensured to transform it into reality. Initial skepticism quickly diminished when he himself become the first purchaser of Bitcoins.
Credits to:
https://101blockchains.com/who-is-hal-finney-bitcoin/