Polygon Developers Clarify System Outages

On July 30, users noticed that Polygon had stopped processing transactions and producing new blocks. According to developers, they were updating data on Polygonscan, which caused the site to display incorrect information, as reported by journalist Colin Wu.

Polygon Labs: Polygonscan is updating the data, the chain is not inactive, some rpc providers need to update the patch. Polygonscan shows no blocks produced in the last hour. https://t.co/XQOk2Adq4O pic.twitter.com/fMLf8RZ2mn

— Wu Blockchain (@WuBlockchain) July 30, 2025

For several hours, users expressed dissatisfaction over the project’s team not making any statements. Under Polygon’s latest post on X about the anniversary of the Ethereum mainnet, members of the cryptocurrency community wrote:

“Hey, why no updates for two hours?”

hey.
Why no announcement for two hours?

— あんざい家(父) (@anzaihd) July 30, 2025

Later, Polygon Labs stated that the incorrect data display on Polygonscan was due to a failure in Heimdall—the network’s “coordinator” responsible for transaction verification and synchronization with Ethereum. One of the validators unexpectedly ceased operation, causing a one-hour halt in block creation.

Update:

Approximately 4 hours ago, Heimdall experienced a temporary disruption that led to a one-hour halt in chain progression, caused by a validator exit. Bor remained fully operational throughout, continuing to produce blocks without interruption.

Our engineering team…

— Polygon Foundation (@0xPolygonFdn) July 30, 2025

“Our engineering team responded immediately and resolved the issue within an hour, successfully restoring Heimdall and bringing the system back online in the shortest possible time,” stated Polygon Labs.

According to them, Bor, which generates blocks, continued to function normally. However, due to issues in Heimdall, data might not have synchronized temporarily. Polygon developers are working with RPC providers to expedite full recovery.

In response to the incident, the price of MATIC fell by 5%, according to CoinGecko. At the time of writing, the token is trading at $0.21.

Back in March 23, the Ethereum layer-two network Polygon zkEVM experienced a failure, resulting in the blockchain, launched about a year ago, being halted for more than 10 hours.