In a significant transition for one of decentralized finance’s (DeFi) most prominent entities, 1inch Network has officially confirmed the departure of its co-founder, Anton Bukov. The split, which was brought to public attention by Bukov himself, marks the end of an era for the leading decentralized exchange (DEX) aggregator. While 1inch leadership maintains that the transition will have no impact on the protocol’s stability, the departure raises questions about the future trajectory of the platform’s technical architecture and strategic management.
The Announcement: A Public Disclosure of Internal Conflict
The news broke when Anton Bukov, a foundational figure in the development of the 1inch ecosystem, took to the social media platform X (formerly Twitter) to clarify his status with the company. According to Bukov, he was dismissed from his role in late November 2025. In his statement, he was unequivocal about his current standing: he holds no remaining responsibilities concerning 1inch’s day-to-day operations, product architecture, or security protocols.
Bukov’s disclosure was blunt, revealing a clear friction between his vision for the company and the direction taken by the remaining leadership. Despite the termination, Bukov emphasized his enduring legacy and legal standing with the firm, noting that he retains his title as a co-founder and remains a 50% shareholder in the entity. This dual reality—a fired employee who maintains significant equity—highlights the complexities often found in the governance structures of crypto-native organizations.
Chronology of a Co-Founder’s Tenure and Exit
2019–2024: The Architect Years
Anton Bukov co-founded 1inch in 2019 alongside Sergej Kunz. During his tenure, Bukov served as a primary architect for the project’s technical backbone. His contributions were instrumental in building the reputation of 1inch as a premier aggregator. Key milestones under his technical leadership included:
- 1inch Router Development: Creating the efficient routing systems that allow users to find the best swap prices across various liquidity pools.
- Fusion Mode: A landmark update that introduced gasless swaps and protected users from sandwich attacks.
- Cross-Chain Infrastructure: Expanding the protocol’s reach beyond Ethereum to encompass a multi-chain environment.
Late 2024–2025: Operational Friction
According to Bukov, the shift in his role was not entirely sudden. He noted that feedback from colleagues and the broader user community had encouraged him to take a more active hand in the operational management and executive leadership of the company. However, these efforts to pivot toward a more administrative role appear to have met resistance, culminating in his dismissal in November 2025.
December 2025: Formal Severance
Following the public announcement, 1inch released a brief statement confirming that Bukov has not been involved in any active capacity with the project since December 2025. The company’s communication was careful to frame this as a settled matter, focusing on business continuity rather than the interpersonal or governance disagreements that led to the termination.
The Road Ahead: 1inch’s Official Stance
In response to the speculation following Bukov’s announcement, 1inch issued a series of assurances intended to stabilize market confidence. The company emphasized that the 1inch Network is a robust, mature entity that operates independently of any single individual.
"The operation of the 1inch Network remains entirely unaffected," the company stated. "Our protocols, infrastructure, and core systems continue to function with the same security and efficiency our users expect."
The company highlighted that the current executive leadership team, led by co-founder Sergej Kunz, remains fully in charge of the network’s strategy and development roadmap. By signaling that the "ship is in steady hands," 1inch is attempting to prevent the departure of a technical heavyweight from being interpreted as a vulnerability by the liquidity providers and retail traders who rely on the platform.
Contextualizing the Departure: A Year of Security Challenges
While both parties have refrained from explicitly linking Bukov’s exit to the company’s recent technical hurdles, the departure occurs against a backdrop of several high-profile security incidents that tested the protocol in 2025.
The March 2025 Fusion V1 Exploitation
In early 2025, the ecosystem faced a significant test when attackers exploited an obsolete Fusion V1 resolver contract. The incident resulted in the loss of approximately $5 million. 1inch moved quickly to characterize the breach as isolated to outdated legacy integrations, stressing that the live Fusion V2 protocol and the core user funds were never at risk. Through a combination of on-chain analysis and negotiations, 1inch successfully recovered a substantial portion of the stolen assets, an outcome that helped maintain trust in their security response capabilities.
The December 2024 Private Key Breach
Preceding the March incident, the company dealt with a compromise involving a resolver smart contract tied to a private key breach. Similar to the later incident, 1inch maintained that the core protocol remained uncompromised. While these incidents are standard challenges in the high-stakes world of DeFi, they underscore the immense pressure on technical leadership to maintain "bulletproof" security—a task that, in the eyes of many, falls squarely on the shoulders of the chief architects.
Implications for the DeFi Ecosystem
The departure of a co-founder from a top-tier project is rarely a neutral event. It signals a shift in power, philosophy, and, potentially, the future roadmap of the organization.
The Rise of "Second Tier"
In a move that suggests a transition rather than a retirement, Bukov has already announced his next venture: Second Tier (tier.xyz). He describes the project as a focused effort to build secure and efficient financial infrastructure. By branding his new venture with a name that implies the next iteration of financial scaling, Bukov is signaling that his interest in the technical challenges of blockchain remains undiminished. The crypto community will be watching closely to see if Second Tier acts as a competitor to 1inch or as a complementary service within the broader DeFi stack.
Governance and Shareholder Dynamics
The fact that Bukov retains a 50% stake in 1inch creates an interesting, if potentially volatile, dynamic. In traditional corporate environments, such a large stakeholder would usually hold a board seat or a significant degree of influence. In the decentralized world, where governance tokens and DAO voting often dictate the direction of a protocol, the split between ownership and operational control can lead to unforeseen governance challenges. If 1inch moves toward a more decentralized governance structure, Bukov’s large share of the "legacy" equity could become a point of contention during future votes or strategic pivots.
Impact on Protocol Trust
For the end user, the primary concern is whether the departure will cause a "brain drain." 1inch has built its reputation on the complexity and efficiency of its pathfinding algorithms. Losing a primary architect could lead to slower development cycles or a shift in technical culture. However, 1inch’s leadership is banking on the fact that the project has grown beyond the contributions of any single developer. With a large team of engineers and a established codebase, the protocol is arguably more resilient today than it was during its inception in 2019.
Conclusion
The departure of Anton Bukov from 1inch is a watershed moment for the project. It represents the inevitable transition of a startup from a founder-led "garage" project to a mature, institutionalized protocol. While the lack of transparency regarding the exact reasons for his dismissal leaves room for speculation, the fundamental stability of 1inch appears secure.
As the DeFi sector continues to evolve, the ability of protocols to manage internal leadership transitions without compromising user security or platform functionality will be a key metric of their success. For now, the crypto community looks toward both 1inch’s future trajectory under Sergej Kunz and the debut of Bukov’s Second Tier to see how this separation of paths will influence the next generation of decentralized finance. The saga serves as a reminder that in the fast-paced, high-stakes world of blockchain, even the most essential partnerships are subject to the pressures of scaling and strategic divergence.
