Overview

• Independent monitors confirmed an 18-block reorganization between heights 3,499,659 and 3,499,676 that invalidated roughly 118 previously confirmed transactions.
• Community observers linked the event to Qubic releasing a privately mined longer chain, a selfish-mining approach that overtook the public tip under proof-of-work rules.
• No confirmed double-spends have been reported, and exchanges and services warned users to raise confirmation thresholds beyond the informal 10-block standard.
• XMR proved resilient, spiking to about $333 before settling near $300 as trading volumes jumped across spot and derivatives markets.
• Network instability indicators spiked, with reports of 213 orphaned blocks in a 24-hour, 720-block window, while proposed mitigations such as DNS or rolling checkpoints and ChainLocks-like finality remain under debate without consensus.