1. The Book That Reopened Old Wounds
Changpeng "CZ" Zhao, the founder of Binance and its former CEO who served four months in a U.S. federal prison after pleading guilty to anti-money-laundering violations, published his memoir titled "Freedom of Money" on April 8, 2026. The 457-page book was described by CZ as his account of Binance's rise from a small crypto startup to the world's largest exchange — a narrative that, by necessity, addresses many of the disputes and controversies that characterized that rise.
Among the episodes revisited in the memoir was CZ's 2014 to 2015 tenure at OKCoin, the predecessor company to OKX and the exchange founded and led by Star Xu. The book returned to the contract dispute that had been a public point of contention between the two men since 2015, with CZ characterizing the allegations against him as coordinated attacks from rivals seeking to undermine Binance's early development. The memoir also contained a new and politically charged claim: that Huobi founder Leon Li had told CZ in 2025 that he believed Xu had reported him to Chinese authorities — an allegation that Xu categorically rejected.
The book was the trigger. Star Xu's response came through a series of posts on X that escalated in tone and personal specificity over two days, ultimately expanding from the original business disputes into questioning Zhao's personal life, specifically his marital status and the legal disposition of his Binance equity stake in the context of his claimed divorce.
2. The Original Dispute: Contract Versions, QQ Chat Logs, and a Notarized Video
The core business dispute between Xu and CZ dates to 2014 and 2015, when Zhao worked at OKCoin as Chief Technology Officer with a reported 10% equity stake. A commercial agreement between OKCoin and early bitcoin investor Roger Ver created a contractual dispute that escalated into mutual accusations of document manipulation.
OKCoin alleged that two versions of the agreement — referred to internally as "v7" and "v8" — had both been sent from CZ's QQ messaging account to a company accountant, with version 8 containing a six-month termination clause that differed from the version OKCoin believed had been agreed upon. Xu's team produced a notarized video that they said showed an OKCoin accountant's QQ account being accessed in front of a notary, with chat logs allegedly linking CZ to both contract versions.
CZ's response in 2015 and in the memoir was consistent: he denied any wrongdoing, suggested the evidence may have been manipulated, and characterized the accusations as motivated by competitive antagonism rather than accurate documentation of events. In the memoir, he wrote that Xu had accused him of forging a contract "out of the blue" and that he denied the allegations in a Reddit post in May 2015 while detailing operational problems he had observed at OKCoin.
In his April 2026 response to the memoir, Xu resurfaced the same 2015 notarized video and called CZ's denial "a habitual lie" that had been maintained continuously since the original dispute. "After spending four months in prison, he continues to make false statements to the world. All I can say is: a habitual liar never changes their nature," Xu wrote.
3. The Huobi Allegation and Xu's Denial
The new element that the memoir added to the feud was CZ's claim about Huobi founder Leon Li. According to the memoir, Li told CZ in 2025 that he believed Xu had reported him to Chinese authorities in the context of a 2020 episode in which OKEx (the renamed OKCoin) suspended customer withdrawals for five weeks while Xu was reportedly under investigation in China. CZ characterized this in the memoir as part of competitive tactics by Xu, contrasting OKEx's withdrawal suspension with Huobi's continued operations during a similar period involving Li.
Xu's response to this allegation was categorical. He described the claim as "purely false information" and "absurd nonsense," arguing that complaints against large exchanges in Asia are common and do not determine enforcement outcomes, and that Li "shouldn't believe this kind of nonsense that defies common sense." Xu also challenged CZ's broader credibility on questions involving Justin Sun, claiming CZ had lied about whether he "personally manipulated the market" or "acted as a tainted witness to report Justin Sun" — allegations that CZ did not specifically respond to in the documented exchange.
4. The Personal Escalation: Divorce, Marital Status, and Binance Equity
The most personally charged dimension of the dispute emerged when Xu pivoted from the 2015 business disputes to questioning Zhao's marital status. Xu referenced prior reporting in which a letter submitted to the court during CZ's legal proceedings had described CZ's spouse using language consistent with a current marriage rather than a dissolved one. Xu argued that if CZ's divorce was genuine, he should be able to produce a divorce agreement signed by both parties — and that failure to produce such a document would constitute another instance of publicly misleading people.
The question of marital status became entangled with a question about Binance equity. Xu noted that if CZ is in fact legally divorced, it raises the question of whether his stake in Binance — one of the most valuable private equity positions in the technology sector globally — had been legally and properly divided as part of the divorce proceedings. The implication was that if the divorce was improperly handled or misrepresented, CZ's ownership of Binance equity could have legal complications.
Zhao's response was to state that he is "officially divorced" and to challenge Xu to a $1 billion wager — or any amount Xu chose — that the divorce had been finalized, with lawyers available to verify the agreement while declining to publish private documents. He characterized Xu's line of questioning as irrelevant and told Xu that his Binance stake was "none of your business."
5. The $1 Billion Bet and Its Rejection
CZ's $1 billion public wager became the most visible single moment of the exchange — a dramatic gesture designed to signal complete confidence in his position while putting Xu in the position of either accepting a wager that implied he believed his own accusations or rejecting it in a way that could be characterized as backing down.
Xu rejected the bet. His stated rationale was specifically framed around compliance — as the beneficial owner of a major regulated exchange with licenses in multiple jurisdictions, he characterized publicly offering a $1 billion personal wager as "hardly professional conduct" inconsistent with the standards appropriate for someone in his regulatory position. Both OKX and Binance operate under extensive financial regulatory oversight in multiple jurisdictions, and Xu's argument was that the type of public spectacle CZ was proposing was incompatible with the governance expectations attached to his role.
The rejection generated mixed reactions in the crypto community. Some observers characterized it as a reasonable invocation of professional conduct standards. Others interpreted it as evasion and characterized the compliance framing as a convenient reason to decline a challenge that Xu had initiated. The $1 billion bet deadline expired on April 10 without Xu accepting it.
6. The October Crash Context and Prior Episodes
The memoir-triggered exchange is not the first recent public conflict between Xu and CZ. In January 2026, Xu had publicly blamed Binance-linked market dynamics for amplifying the October 10, 2025 crypto market crash — the $19 billion liquidation event that led to the sharpest single-day decline in crypto markets since the FTX collapse. Binance and other market participants disputed that characterization. The January dispute established a recent pattern of public antagonism between the two founders that the memoir release accelerated rather than initiated.
The October 2025 crash context is relevant because it gave Xu a contemporaneous grievance on top of the decade-old historical disputes. His response to the memoir therefore carried the weight of both the distant past and the recent present — a combination that may explain the intensity of his engagement compared to prior instances when the 2015 contract dispute had been raised and addressed more briefly.
7. CZ's Post-Prison Positioning
The memoir's release reflects CZ's deliberate effort to shape the public narrative of his own story following his legal resolution. After pleading guilty to U.S. AML violations, paying a $150 million personal fine alongside Binance's $4.3 billion settlement, and serving four months in a federal minimum-security facility, Zhao has repositioned himself as an elder statesman of the crypto industry — investing in blockchain education projects, providing mentorship to founders, and maintaining an active presence on social media.
"Freedom of Money" is part of that rehabilitation narrative — an attempt to tell his own story on his own terms rather than through the lens of regulators, prosecutors, and competitors. The memoir's assertion that the 2015 contract allegations were unfounded, and its new claims about Xu's role in Li's detention, are consistent with the book's broader thesis of CZ as a figure who was unfairly targeted by established players who feared Binance's competitive threat.
Xu's response demonstrates the limits of that narrative control. A memoir creates a published record of claims that competing parties can immediately challenge on the same public platform, and Xu's posts have been more pointed and specific — with documentary evidence attached in the form of the 2015 notarized video — than CZ's memoir assertions.
8. Industry and Regulatory Implications
The public airing of these disputes between the founders of two of the world's three largest crypto exchanges occurs at a moment when both companies are actively pursuing additional regulatory licenses and institutional partnerships. Public accusations of contract forgery, whistleblowing to Chinese authorities, and marital misrepresentation are not the kind of communications that create the impression of industry maturity that regulators in the United States, European Union, and Asia are looking for when evaluating licensing applications.
Both OKX and Binance have made substantial investments in compliance infrastructure, legal teams, and regulatory relationship management over the past several years. The public feud creates reputational collateral damage that neither exchange's compliance department would have chosen to generate. Industry observers noted that the extended X exchange between the two founders served as a reminder that the human relationships and personal histories underlying the industry's largest institutions are often more complicated and more acrimonious than their institutional communications suggest.
9. The Still-Unresolved Questions
After the multi-day exchange on X, the specific factual disputes between Xu and CZ remain unresolved in any verifiable sense. The contract forgery allegation has been in dispute since 2015 without producing a definitive resolution — the notarized video that Xu points to as evidence has been available for a decade, and CZ's denials have been consistent throughout. Neither party has introduced genuinely new evidence in the current exchange; both are arguing from the same positions they held in 2015.
The Huobi arrest allegation — CZ's claim that Li blamed Xu for reporting him to authorities — is a second-hand assertion from CZ about what Li told him, which Li has not publicly confirmed and Xu categorically denies. The divorce question, which Xu raised as a credibility test, is a private legal matter that CZ declined to document publicly while asserting the fact of its completion.
10. What the Feud Reveals About Crypto's Founding Generation
The Xu-CZ dispute is, in one dimension, a specific fight between two specific individuals over specific facts that may never be definitively resolved publicly. In another dimension, it is a window into the culture and relationships of the crypto industry's founding generation — a small group of entrepreneurs who built the world's largest financial exchanges starting in the mid-2010s in an environment of minimal regulation, intense competition, and frequent accusations of market manipulation, regulatory arbitrage, and personal misconduct.
The disputes that characterized that era — contract negotiations, equity arrangements, intelligence sharing among competitors, relationships with Chinese regulatory authorities — were conducted in a context that bore little resemblance to the regulated, institutionally integrated industry that OKX and Binance present themselves as today. When CZ publishes a memoir that revisits those disputes on his own terms, it is not surprising that the counterparties to those disputes have their own versions to assert — or that the assertion of competing versions creates a public spectacle that neither institution's compliance department would have designed.