The Open Network (TON), a blockchain linked closely to Telegram, experienced a brief outage on June 1, 2025, that halted block production for approximately 40 minutes. Developers quickly identified the root cause as an error in processing the masterchain dispatch queue. They promptly deployed a fix by updating only a few masterchain validators, which restored block production and network consensus without impacting user assets.
TON’s official statement confirmed that transactions during the downtime were secure, and no funds were lost. The team plans to release a detailed post-mortem to explain the incident thoroughly. This event is part of a pattern of occasional outages experienced by TON, which also faced similar disruptions in 2024 due to high traffic from the DOGS memecoin launch.
Despite these technical issues, TON's ecosystem remains attractive to investors. Notably, in March 2025, TON secured $400 million in funding from prominent venture capital firms such as Sequoia Capital, Draper Associates, CoinFund, and SkyBridge. The network's outages are comparable to those seen in other high-throughput blockchains like Solana and Sui, often caused by validator consensus issues or software bugs triggered by sudden surges in network activity.