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The cryptocurrency world has been shaken by claims from Qubic, a project led by IOTA co-founder Sergey Ivancheglo, that it has allegedly seized majority control of the Monero blockchain’s hashrate. According to the team, this milestone was reached on August 11, 2025, after a focused push that lasted several weeks. The development has opened up concerns over Monero’s network security and the vulnerability of mid-cap Proof-of-Work blockchains to incentive-driven takeovers.
How Has The Monero Situation Played Out?
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According to the Qubic team, the attack was carried out using a “useful proof‑of‑work” (uPoW or UPoW) model. Miners channel their CPU mining power toward Monero; Qubic then converts the mined XMR into USDT
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