The Open Network (TON), a layer-1 blockchain closely integrated with Telegram and serving as the foundation for its mini-app ecosystem, has restored full functionality after a brief outage on June 1 that temporarily halted block production.
The TON developers team has guaranteed users that the outage did not impact any funds and that transactions made while the system was down were safe from loss.
TON recovers its functionality after suffering a brief outage
Blockchain network outages are usually common in high-throughput, high-speed blockchains because of the chains’ high technical complexity.
As blockchain networks grow more complex, brief outages may become increasingly common, potentially hindering broader consumer adoption of cryptocurrencies and undermining public trust in the technology.
Following the recent brief outage, the developers’ team reported the problem at 12:51:00 UTC and managed to restore network functionality about 40 minutes after they discovered the outage.
In an update, the TON developers said they released a quick fix and updated just a few master chain validators, allowing the blockchain to start block production again. According to the team, the issue was caused by a mistake in handling the masterchain dispatch queue.
The team also revealed that a full technical report will be published soon to address exactly what caused the issue. Blockchain users have revealed their growing worries as quick-growing blockchain networks processing significant amounts of data experience brief outages frequently. In this instance, TON’s flash reaction helped minimize the damage.
As Telegram depends more on TON for its cryptocurrency plans, the network will face greater pressure to remain stable. Everything is back to normal, but concerns about its long-term reliability are expected to arise.
TON gains increased institutional investments despite suffering several brief outages
Notably, this is not the first brief outage incident. In August 2024, TON suffered several brief outages due to high demand for the DOGS meme coin, which congested the network and caused a chain to stop.
The initial outage occurred on August 27 when block production was suspended at workchain block 45,341,899. Network downtime lasted several hours until validators reset their nodes at 4:00 UTC to re-establish network-wide consensus.
At 5:30 am UTC, the functionality was briefly restored, and users were allowed to access the network again before the network crashed again hours later. The reason behind the sudden crash was due to excessive users transferring DOGS memecoins on the TON blockchain.
The next outage incident occurred on August 28. On that day, TON faced a brief outage, which caused block production to stop at workchain block 45,350,522. This second outage lasted about six hours until it was resolved, with block production resuming on the same day.
Even after the brief network outages, TON is gaining retail attention and institutional investment from big digital asset names in the crypto space. Telegram Open Network received $400 million from venture capital firms like Sequoia Capital, Draper Associates, CoinFund, and SkyBridge in March 2025.
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