The Sui blockchain, marketed as one of the fastest and most reliable Layer-1 networks, suffered two back-to-back outages on May 28 and 29, 2026, stopping block production for a combined 9.5 hours. The incidents were traced to crash bugs in its recent 1.72 software upgrade, which introduced a new address balances feature that malfunctioned with the network’s gas charging logic. While no funds were lost and the chain was not compromised, the events undercut Sui’s core promise of rock-solid uptime.
The price of SUI fell roughly 13% shortly after the outages, and over the past week, the token is down about 17%, trading near $0.87—a steep decline from its all-time high of $5.35 in January 2025. The network validators deployed an interim patch after the first outage, but when a second incident struck the next day, the team rushed out what it describes as a permanent fix. A detailed post-mortem has been promised and will be critical to rebuilding developer and institutional confidence.
The damage goes beyond price. Sui was built by former Meta engineers around parallel transaction execution, and its reliability was the key differentiator against competitors like Solana, which has a history of outages. Two halts in 48 hours transformed a technical bug into a reputational hit. As analysts note, for a chain that sells speed and uptime, any sign of instability can make developers and institutions hesitate.
In separate news, TRON (TRX) traded near $0.3483 with a market cap around $33 billion, finding support at technical levels. BlockDAG also announced plans for a stablecoin and buyback-and-burn mechanism, but these are unverified project claims.
