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Jeff Dorman, chief investment officer at digital asset firm Arca, has taken issue with Coinbase CEO Brian Armstrong after the exchange leader seemingly provoked bets on prediction platforms during the company’s third-quarter earnings call.
Key Takeaways:
- Arca’s Jeff Dorman criticized Coinbase CEO Brian Armstrong for mentioning prediction market bets during the earnings call.
- Armstrong referenced crypto-related terms such as “Bitcoin” and “Web3” that users had bet would be included.
- This incident reignited discussions regarding market integrity.
Dorman remarked that Armstrong’s statements “mocked the industry” and compromised efforts to establish institutional trust in cryptocurrency.
Coinbase CEO Mentions Bitcoin and Web3 After Monitoring Prediction Market Bets
At the conclusion of the call on Thursday, Armstrong acknowledged that he had been “monitoring the prediction market regarding what Coinbase would announce in their next earnings call.”
He subsequently included the terms “Bitcoin, Ethereum, Blockchain, Staking, and Web3” – phrases that users on Polymarket and Kalshi had wagered would be mentioned.
This comment effectively enabled some bettors to secure wins.
Bloomberg reported that over $84,000 was wagered on whether those keywords would be mentioned during the call.
The moment quickly circulated on social media, igniting debate over whether Armstrong’s actions were merely playful or potentially manipulative.
Dorman was not amused. “You need your head examined if you think it’s cute or clever or savvy that the CEO of the biggest company in this industry openly manipulated a market,” he stated on X.
He further noted that such conduct undermines credibility, particularly as firms like Arca strive to position cryptocurrency as a serious, institutional asset class.
I’m tired of dumping on Clownbase, but you need your head examined if you think it’s cute or clever or savvy that the CEO of the biggest company in this industry openly manipulated a market.
It’s not fun working tirelessly for 8 years trying to educate institutional investors on… https://t.co/7XCJ8tYhMb— Jeff Dorman (@jdorman81) October 31, 2025
Polymarket, one of the platforms facilitating the bets, responded humorously, describing Armstrong’s actions as “diabolical work.”
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However, the incident highlighted how lightly regulated “mention markets” can be swayed when public figures intentionally reference their outcomes.
Coinbase later clarified that its employees are prohibited from engaging in prediction markets involving the company.
Importantly, Coinbase has invested in both Polymarket and Kalshi, and Armstrong utilized the same call to promote the firm’s new “Everything Exchange,” which may eventually accommodate prediction markets.
In response to the criticism, Armstrong shared on X, “lol this was fun – happened spontaneously when someone on our team dropped a link in the chat.”
lol this was fun – happened spontaneously when someone on our team dropped a link in the chat https://t.co/tQiV3B9jUj
— Brian Armstrong (@brian_armstrong) October 31, 2025
Coinbase Denies Senator’s Allegation of Links to Trump’s ‘Corruption Factory’
Coinbase has refuted claims made by Senator Chris Murphy, who accused the exchange of being part of what he termed President Donald Trump’s “corruption factory.”
Murphy pointed to Coinbase’s contributions to Trump’s inauguration and a new White House ballroom project, as well as its political expenditures through Fairshake, a crypto-backed super PAC that supported pro-crypto candidates.
In response, Coinbase’s Chief Policy Officer Faryar Shirzad labeled the allegations as “ridiculous,” asserting that the senator overlooked “basic facts.”
Shirzad clarified that Fairshake is a non-partisan PAC that has supported both Republicans and Democrats, including several of Murphy’s Senate colleagues.
He added that corporate donations to presidential inaugurations have been a common practice for decades and are fully disclosed under campaign finance law.
Addressing concerns regarding the ballroom donation, Shirzad stated that Coinbase’s contribution was part of a larger corporate initiative through the Trust for the National Mall, alongside companies such as Apple, Google, and Ripple.
The White House confirmed that the ballroom’s $300 million cost is funded privately.
The post Arca’s Jeff Dorman Slams Coinbase CEO for Prediction Market Stunt on Earnings Call appeared first on Cryptonews.
