The TON blockchain, closely tied to cloud-based messaging app Telegram, suffered a brief outage on Sunday that halted block production. 

The issue was traced to an error in the masterchain dispatch queue affecting how the main chain processed its data queue.

This story is an excerpt from the Unchained Daily newsletter.

TON’s development team announced the problem at 9:21 a.m. ET on Sunday and restored network functionality about 40 minutes later. Only a few masterchain validators required updates to resume block production, and no funds were lost during the incident.

It’s not the first time TON has seen outages. In August last year, several similar incidents occurred due to high demand for the DOGS memecoin, causing network congestion and halts in block production.