TON Blockchain Restores Service After Brief Outage Caused by Masterchain Error

The Open Network (TON), a layer-1 blockchain closely integrated with the Telegram messaging app, experienced a brief but notable network outage on June 1, halting block production for around 40 minutes before developers successfully restored functionality.

According to an update from TON’s development team, the issue was caused by an error in the masterchain dispatch queue, a key component in coordinating the blockchain’s operations.

“A quick fix was released, and updating only a few master chain validators was sufficient to resume block production,” the developers announced at 12:51:00 UTC.

Crucially, the team reassured users that no funds were lost or at risk during the downtime, and that transactions submitted during the outage were preserved and processed once the network resumed.

Blockchain Outages: A Growing Challenge for High-Speed Networks

Outages like these typically affect high-throughput, high-speed blockchains, which face increased technical complexity due to their advanced architectures. As blockchain systems grow more sophisticated and serve larger user bases, temporary disruptions — while concerning — may become more frequent, raising questions about long-term reliability and user confidence.

Source: TON Status

History of TON Network Disruptions

This wasn’t the first time TON faced network troubles.

In August 2024, the TON blockchain suffered several outages tied to intense demand for the DOGS memecoin, which overwhelmed the system:

• Aug. 27, 2024: Block production halted at workchain block 45,341,899 due to DOGS minting congestion. The network was down for several hours before validators reset their nodes at 4:00 am UTC, briefly restoring consensus by 5:30 am — only for the network to crash again hours later under renewed memecoin traffic.

• Aug. 28, 2024: A second outage followed, halting block production at block 45,350,522. This downtime lasted roughly six hours before the issue was resolved, and the network resumed operations later that day.

Despite these technical hiccups, TON has continued to attract strong user and investor interest.

Major Investment Signals Confidence in TON

In March 2025, TON raised a staggering $400 million in funding from prominent venture capital firms, including Sequoia Capital, Draper Associates, CoinFund, SkyBridge, and others. The successful raise suggests that even with periodic network disruptions, TON remains one of the blockchain projects to watch — particularly given its strategic connection to Telegram’s massive global user base.

Looking Ahead

As blockchain blockchain technology evolves, brief outages on fast, complex networks like TON may become an unavoidable part of the innovation curve. The key challenge will be ensuring these networks can maintain user trust, deliver consistent performance, and scale effectively — even under high demand or unexpected technical stress.

For TON, how it handles future disruptions could play a critical role in shaping its long-term adoption and reputation in the ever-competitive crypto ecosystem.