According to TechFlow, the organizers of the Bitcoin Conference have stepped up security measures and expect a record number of spectators, which was about 12,000 last year and may exceed 25,000 this year.

Brandon Green, the convention's chief of staff, said ticket sales have accelerated since Trump's attendance was announced, and he predicted a final attendance of between 20,000 and 45,000 people.

According to The Washington Post, the conference's founders promised Trump that attending the conference could bring him $15 million in revenue.