Temporal appointed Michael Marcantonio as chief executive, effective around October 27, 2026. Formerly head of decentralized finance at Galaxy Digital, he brings experience in blockchain trading, corporate strategy and mergers and acquisitions. The company operates Harmonic, which reportedly covers more than 30% of Solana’s validator stake, Humidifi, an automated market maker that processed tens of billions of dollars during peak periods, and Nozomi, its execution layer. The appointment is intended to accelerate the development of Temporal’s financial infrastructure and could intensify competition with Jito in Solana block building while raising questions about conflicts of interest across the company’s activities.
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