• Home
  • Latest
  • Coins2Day 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Some Coins2Day Crypto pricing data is provided by Binance.
CompaniesEthereum

Controversial blockchain firm Prometheum launches long-awaited Ethereum custody

Leo Schwartz
By
Leo Schwartz
Leo Schwartz
Senior Writer
Down Arrow Button Icon
Leo Schwartz
By
Leo Schwartz
Leo Schwartz
Senior Writer
Down Arrow Button Icon
May 20, 2024, 8:00 AM ET
Prometheum soft-launched custody services for Ether on Friday.
Prometheum soft-launched custody services for Ether on Friday.

The U.S. Crypto industry has complained loudly about a lack of regulatory clarity, but one firm sees it differently. Digital assets platform Prometheum has taken the contrarian view that a clear legal path already exists to trade crypto—a stance that has drawn the ire of others in the industry.

On Friday, the New York–based company put its theory to the test by launching its long-planned custody services for Ethereum. The move is notable because Prometheum is doing so in a way that classifies the token as a security under the supervision of the Securities and Exchange Commission. The custody launch appears to validate the position of agency chair Gary Gensler, who has countered the broader crypto industry’s position by saying the existing regulatory regime is adequate and effective.

“It eliminates a lot of the arguments that things can’t be done under existing laws,” said Aaron Kaplan, the co-CEO of Prometheum Inc., the parent company of the entity launching Ether custody. “It marks the first time that…an investment contract digital asset security is being custodied and treated under the securities laws.”

The wager

Founded by the brothers Aaron and Benjamin Kaplan, Prometheum existed in relative obscurity before bursting onto the crypto scene in mid-2023 with the announcement that it had procured a first-of-its-kind broker-dealer license that would allow firms to custody digital asset securities.

While much of the blockchain industry argues that the vast majority of cryptocurrencies should not be treated as securities under the jurisdiction of the SEC, Prometheum made a novel alternate claim. It argued that its special-purpose broker-dealer distinction—along with a license for a separate entity to operate an alternative trading platform—would allow it to offer trading for cryptocurrencies under existing SEC regulations.

Prometheum’s wager, along with a contentious appearance by Aaron Kaplan at a House Financial Services Committee hearing on digital assets, drew withering critique from industry leaders, who argued that Prometheum’s approach would not work, and that it would not be able to launch products or find customers.

For months, Prometheum declined to name which crypto assets it would treat as securities and offer on its platforms, until February, when it announced that it would soon make Ethereum available for custody. While the launch does not constitute its full trading offering, custody is a necessary first step to facilitating trading, as customers need to have a venue to hold the assets they buy and sell. By operating both the custodian and the trading system under separate entities with approval from the SEC and the Financial Industry Regulatory Authority (FINRA), an independent industry oversight body, Prometheum claimed it had found a compliant path where competitors like Coinbase had failed.

Again, the announcement was met with vitriol, with crypto advocates fearful that the launch would mean the SEC viewed Ether as a security—a position the agency has not yet made, but has repeatedly telegraphed, and that would have far-reaching consequences for the sector. Those worries were exacerbated when the SEC issued a Wells notice against the Ethereum developer Consensys in late April that seemed to confirm the industry’s fears.

Prometheum’s launch of Ether custody services, however, was delayed beyond its target of March—until Friday. Kaplan told Coins2Day that Prometheum Inc., the subsidiary of Prometheum that holds the broker-dealer license, soft-launched the product with a small group of companies and planned to fully launch custody services by the first week of June. Full trading, he said, would come within a quarter. He declined to provide further details on the companies included in the pilot.

After months of threatening to upend the crypto industry’s long-held belief about the possibility of trading Ether under SEC guidance, Prometheum’s custody launch represents the first test of the company’s strategy.

“It took a little longer than we anticipated,” said Kaplan. “But we didn’t really have the option of doing it a different way.”

Join us at the Coins2Day Workplace Innovation Summit May 19–20, 2026, in Atlanta. The next era of workplace innovation is here—and the old playbook is being rewritten. At this exclusive, high-energy event, the world’s most innovative leaders will convene to explore how AI, humanity, and strategy converge to redefine, again, the future of work. Register now.
About the Author
Leo Schwartz
By Leo SchwartzSenior Writer
LinkedIn iconTwitter icon

Leo Schwartz is a senior writer at Coins2Day covering fintech, crypto, venture capital, and financial regulation.

See full bioRight Arrow Button Icon

Latest in Companies

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Coins2Day Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Coins2Day 500
  • Global 500
  • Coins2Day 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Coins2Day Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Coins2Day Brand Studio
  • Coins2Day Analytics
  • Coins2Day Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Coins2Day
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Most Popular

placeholder alt text
Economy
'I just don't have a good feeling about this': Top economist Claudia Sahm says the economy quietly shifted and everyone's now looking at the wrong alarm
By Eleanor PringleJanuary 31, 2026
13 hours ago
placeholder alt text
Economy
Right before Trump named Warsh to lead the Fed, Powell seemed to respond to some of his biggest complaints about the central bank
By Jason MaJanuary 30, 2026
1 day ago
placeholder alt text
AI
Top engineers at Anthropic, OpenAI say AI now writes 100% of their code—with big implications for the future of software development jobs
By Beatrice NolanJanuary 29, 2026
2 days ago
placeholder alt text
Big Tech
Microsoft’s $440 billion wipeout, and investors angry about OpenAI’s debt, explained
By Eva RoytburgJanuary 29, 2026
2 days ago
placeholder alt text
Asia
Trump’s Greenland play comes with Russia and China running circles around the US in the Arctic as expert sees ‘big game of catch-up’
By Tristan BoveJanuary 30, 2026
1 day ago
placeholder alt text
Politics
The American taxpayer spent nearly half a billion dollars deploying federal troops to U.S. cities in 2025, CBO finds
By Nick LichtenbergJanuary 28, 2026
3 days ago

© 2026 Coins2Day Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Coins2Day Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.


Latest in Companies

CompaniesVenture Capital
Exclusive: Crypto venture firm CMT Digital raises $136 million for fourth fund
By Ben WeissNovember 5, 2025
3 months ago
A Ferrari race car on a racetrack
CompaniesCryptocurrency
Ferrari to release crypto token to let wealthy fans take part in 499P auction
By Carlos GarciaNovember 3, 2025
3 months ago
Michael Saylor on stage at a Bitcoin conference.
CompaniesBitcoin
Michael Saylor boosts yield, says Strategy is at an ‘inflection point’
By David Pan, Judy Lagrou and BloombergOctober 30, 2025
3 months ago
CompaniesCryptocurrency
Crypto founders are getting very rich, very fast—again
By Jeff John RobertsOctober 30, 2025
3 months ago
A Mastercard credit card peeking out from a pocket.
CompaniesMastercard
Exclusive: Mastercard poised to acquire crypto startup Zerohash for nearly $2 billion, sources say
By Ben Weiss and Leo SchwartzOctober 29, 2025
3 months ago
Three men stand in front a white backdrop.
CompaniesCryptocurrency
Exclusive: Startup Hercle raises $10 million to build out stablecoin-based global money transfers
By Carlos GarciaOctober 29, 2025
3 months ago