DJ Khaled and pro boxer Floyd Mayweather Jr. are facing charges from the Securities and Exchange Commission today after they failed to disclose that they were being paid promotional fees to tout fraudulent initial coin offerings.

According to the SEC, this is the first time that individuals have faced charges involving ICOs. The Commission is accusing Mayweather of failing to disclose a $100,000 promotional payment and DJ Khaled with a $50,000 one. Both celebrities received these promotional fees from Centra Tech, Inc. earlier this year. Neither Mayweather nor Khaled have admitted to or denied the Commission’s findings, but both have agreed to pay back what they had received to promote the ICO and are facing hundreds of thousands of dollars in additional penalties each.

Centra's (CTR) ICO starts in a few hours. Get yours before they sell out, I got mine https://t.co/nSiCaZ274l pic.twitter.com/dB6wV0EROJ — Floyd Mayweather (@FloydMayweather) September 18, 2017

”These cases highlight the importance of full disclosure to investors,” said SEC Enforcement Division co-director Stephanie Avakian. “With no disclosure about the payments, Mayweather and Khaled’s ICO promotions may have appeared to be unbiased, rather than paid endorsements.”

The ICO’s two founders, Sohrab “Sam” Sharma and Robert Farkas, were charged earlier this year by the Commission for peddling the unregistered and fraudulent digital token called CTR. The ICO raised more than $32 million from investors, and the founders said it would be used to build financial products, like a debit card for cryptocurrencies through a partnership with Visa. But the new coin was met with skepticism after a New York Times investigation uncovered that one of Centra’s chief executives had been fabricated. The company had also never applied to run Centra cards on the Visa network and were believed to be misleading their thousands of investors.

“Social media influencers are often paid promoters, not investment professionals,” Enforcement Division co-director Steven Peikin in a statement on today’s charges, “and the securities they’re touting, regardless of whether they are issued using traditional certificates or on the blockchain, could be frauds.”