Polygon Crypto Initiates Giugliano Hardfork to Enhance Transaction Finality

Polygon crypto implemented its Giugliano hardfork on the mainnet at block 85,268,500 on April 8, achieving a 2-second reduction in transaction finality through a mechanism that allows block producers to announce blocks earlier in the confirmation process. The Polygon crypto Foundation verified that the upgrade was successfully activated at around 2:00 p.m. UTC – as planned and without any reported issues.

This 2-second reduction is significant. For payment applications and real-world asset platforms operating on Polygon PoS, quicker finality directly mitigates settlement risk and decreases the confirmation latency that differentiates blockchain user experience from conventional financial systems.

Key Takeaways:

• What It Is: The Giugliano hardfork (PIP-83) is an upgrade to the Polygon PoS mainnet that activates at block 85,268,500, focusing on enhanced transaction finality and revised fee infrastructure.
• The Technical Change: Block producers can now announce blocks earlier in the cycle, achieving a 2-second reduction in finality – validated on the Amoy testnet prior to mainnet deployment.
• Fee Infrastructure: Fee parameters are now integrated directly into block headers, along with new RPC endpoints for fee information – a structural modification for wallets and developer tools.
• Node Requirement: All node operators must utilize Bor v2.7.0 or Erigon v3.5.0 or newer; nodes running earlier versions will lose consensus at the activation block.
• What to Watch: Metrics for real-world finality following activation will indicate whether the 2-second improvement from the testnet is maintained at mainnet scale – and whether Polygon narrows the user experience gap with quicker L2 competitors.

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What Giugliano Actually Changes for Polygon Crypto – and Why the Finality Mechanism Matters

The primary change in Giugliano is structural: block producers on Polygon PoS can now indicate block availability sooner in the slot cycle, decreasing the time validators must wait before considering a block confirmed. On the Amoy testnet, this resulted in a 2-second improvement in finality – a measurable difference, not a minor adjustment, when the baseline confirmation window is already measured in seconds.

The upgrade also incorporates fee parameters directly into block headers and introduces new RPC support for fee information.

Giugliano Upgrade
The Giugliano hardfork will be launched on Polygon mainnet at block number 85,268,500, at approximately 2 PM UTC on April 8.
This upgrade: facilitates faster finality by allowing producers to announce blocks earlier, adds fee parameters directly in block headers,…

— Polygon Foundation (@0xPolygonFdn) April 6, 2026

This distinction is important for developers: wallets and dApps can now retrieve fee conditions from block data directly instead of reconstructing them through separate API calls, which streamlines gas estimation logic and minimizes the potential for fee-related errors at the application level.

Giugliano is not an upgrade focused on throughput – it is an enhancement in latency and infrastructure. The Gigagas roadmap aiming for 100,000 TPS remains a distinct and longer-term initiative. What Giugliano provides is a more efficient confirmation loop and improved fee data pipelines – essential infrastructure that the Gigagas scaling efforts will rely on.

The upgrade also has a specific background. Giugliano formally reintroduces PIP-66, a series of modifications that were included in the earlier Bhilai hardfork (PIP-63) but were rolled back due to unspecified network behavior issues during deployment.

Reminder: PIP-85 activates on Polygon PoS from block 85,245,000, while the Giugliano hardfork itself is scheduled later at block 85,268,500 (~2 PM UTC on Apr 8).
What changes with PIP-85:
– delegators start receiving direct priority fee income
– 37% to stakers via Ethereum… https://t.co/KgioUxTkeo pic.twitter.com/DbmQ0p5sgm

— Vadim | POLTRACK (@vadim_web3) April 7, 2026

The Amoy testnet run on March 23 at block 35,573,500 served as the final validation checkpoint before mainnet, and the smooth activation on Wednesday indicates that those earlier issues have been addressed.

When compared to the broader L2 landscape, the gap that Giugliano addresses is tangible but context-dependent. Optimistic rollups like Arbitrum and Optimism feature 7-day challenge windows that overshadow any PoS finality metric. ZK-based rollups achieve near-instant cryptographic finality but at higher proving costs.

Polygon PoS occupies a different architectural category – a sidechain with its own validator set – and Giugliano enhances its native finality without changing those fundamental trade-offs.

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