Polygon Foundation Restores Consensus and Finality Functions on L2 Ethereum Network - Major Milestone Achieved

Polygon's Layer 2 solution just got its backbone back—consensus and finality mechanisms are fully operational again.

The Fix That Matters

Network validators can breathe easy as the core blockchain functions that prevent double-spending and ensure transaction irreversibility are back online. No more guessing games about whether your transactions will stick.

Ethereum Scaling Just Leveled Up

This isn't just maintenance—it's a statement. Polygon's team deployed the fix with surgical precision, proving that Layer 2 solutions can recover from technical hiccups faster than traditional finance can process a single wire transfer.

Because let's be honest—your bank still thinks blockchain is something you put on a bicycle chain.

Polygon network’s finality had a 10-15 minute delay, though they maintained block production

As reported by Cryptopolitan early on Wednesday, a bug in Bor and Erigon nodes led to a short disruption in consensus finality on Polygon’s network. The software issue interfered with Remote Procedure Call (RPC) services, which meant applications using Polygon had trouble connecting to the network.

Nonetheless, even with the disruption, Polygon remained online. It continued block production, though finality was delayed by around 10–15 minutes, with several RPC providers and validators having to revert to the last finalized block to get back in sync. Later, the company stated that rebooting the affected nodes successfully restored functionality for some users.

Polygon co-founder Sandeep Nailwal explained that the disruption was triggered by a faulty proposal from a validator, which pushed several Bor nodes onto separate forks and halted block production. He noted that fixes were rolled out through Heimdall v0.3.1, introducing a hard fork to remove the faulty milestone, and Bor 2.2.11 beta2 purged it from the database. With these updates, nodes are now fully operational, and the network’s checkpoint and milestone finality process has returned to normal.

Moreover, the network on their official X account stated that they will keep a close eye on the network to ensure everything keeps running smoothly.

Polygon’s Heimdall V2 mainnet activity was disrupted in July

A few months back, Polygon encountered a comparable incident, during which the Heimdall V2 mainnet, the consensus client responsible for coordinating node communication in Polygon’s PoS system, was offline for roughly one hour.

The network’s disruption was linked to a  “consensus bug.” Though the software glitch did not affect the Bor LAYER block production. Soon after Heimdall returned online, minor synchronization inconsistencies appeared across several RPC providers’ Bor nodes, which the network promptly addressed. 

Before the incident, Polygon had just launched the Heimdall V2 upgrade a few weeks back. The upgrade cut finality times to about five seconds while moving the network to a new stack powered by CometBFT and Cosmos-SDK v0.50. Naiwal had even described it as “the most technically complex hard fork Polygon proof-of-stake (PoS) has seen since its launch in 2020.” 

Although blockchain projects aim for faster block times and higher throughput, these upgrades also add complexity and potential points of failure. Heimdall V1 has also faced network issues before. Back in March 2022, a bug in Heimdall knocked Polygon offline for a few hours because validators weren’t all on the same version of the chain.

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