Qubic mining pool has seized control of over 51% of Monero’s hashrate, raising serious security concerns for the network.
With >51% control, Qubic rewrote part of Monero’s history—6 blocks replaced, 60 blocks invalidated.
At peak hours, Qubic mined up to 80% of Monero blocks.
During the test, Qubic mined 5,506 blocks, earning 750 $XMR and 7m XTM (~$240,000).
Peak hashrate hit 2.71 GH/s, equal to 52% of Monero’s total.
Miners using Qubic earned nearly 4x more than direct Monero mining due to QUBIC token bonuses and price gains.
The experiment was framed as an “economic demonstration” of Useful Proof of Work.
Risks with >50% control include blockchain reorgs, double spending, and transaction censorship.
