
The Core blockchain is ready for activation of the Hermes Hardfork. This hardfork introduces faster transaction finality, enhanced validator operations, advanced developer tools, and commission support for both CORE and BTC staking. The hardfork was activated on Core Testnet2 on Oct 15th, 2025, at 08:00:00 AM UTC. After rigorous testing, the hardfork will be activated on the Core Mainnet on November 25, 2025, 08:00:00 AM UTC.
Hardfork Activation Timeline
Core Testnet2: Oct 15th, 2025, at 08:00:00 AM UTC
Core Mainnet: November 25, 2025, 08:00:00 AM UTC
What's New in the Hermes Hardfork
The Hermes Hardfork introduces key improvements for speed, security, validator operations, and developer capabilities.
Key Highlights
Fast Finality (BEP-126): Transactions finalize in ~6s (2 blocks).
Validator Enhancements: Maintenance mode, candidate onboarding, consecutive block production, and validator agents (BEPs 127, 131, 341, 410).
Developer Features:
BEP-439: BLS12-381 cryptography for advanced use cases.
BEP-440: Access to historical block hashes.
BEP-441: EOAs with executable code.
Commissions: Validators can charge up to 100% on staking rewards; channel partners can earn commissions for delegations via their platforms.
Merged Up to BNB Smart Chain v1.5.12 for performance and compatibility improvements.
Overall Impact on Core Blockchain
Validators: Higher reliability, scalability, and flexibility.
Developers: Enhanced cryptographic and smart contract capabilities.
Users: Faster, more secure confirmations.
⚠️ Action Required
For Testnet Node Operators
- Upgrade the Nodes
The Hermes Hardfork is a mandatory upgrade for all validators and full node operators; they must upgrade to v1.0.22 before November 25, 2025, 08:00:00 AM UTC. Failure to upgrade will cause the node to fall out of consensus and stop producing blocks.
How to Upgrade:
Download the latest release from the official Core Releases GitHub repository.
Follow the upgrade instructions provided in the official documentation.
Verify that your node is fully synced and operational, especially with changes to block finality and consecutive block production.
Configuring for BEP-126: Validator nodes must comply with the official guidelines after upgrading their geth client to the latest release to ensure compatibility with the fast finality upgrade. For more details, refer to the detailed guidelines for the validator and full nodes.
- Review and monitor new behaviors:
BEP-126 (Fast Finality): Stricter finality; missed signatures have a greater impact.
BEP-127 (Maintenance Mode): Learn how to safely enter/exit downtime mode to avoid accidental downtime penalties in future upgrades.
BEP-341 (Consecutive Blocks): Ensure the infrastructure and monitoring systems handle multiple block productions.
BEP-410 (Validator Agent): If using agents, configure and test ahead of time.
For Developers and dApp Teams
There are no breaking changes for most wallets or dApps. However, thoroughly testing your dApps is encouraged. Developers should take into consideration:
Update development tooling for compatibility with upgraded clients
Test contracts that rely on BEP-439 (BLS cryptography), BEP-440 (Historical block access), and BEP-441 **(**Code-enabled EOAs). These features change how contracts behave and should be tested for compatibility and correctness.
Update any backend services, APIs, or smart contracts relying on:
Faster finality assumptions
Randomness or block hashes
EOA vs. contract behavior
Conduct audits/reviews for projects using new precompiles or account types
For General Users
For general users and wallet holders, no action is required.
Why Upgrade?
Running the latest software ensures uninterrupted operation, access to new features, and alignment with the network’s latest protocols. Failing to upgrade may lead to syncing issues or node disconnection.
The Hermes Hardfork represents a major milestone for Core, enabling fast finality, advanced validator operations, and powerful new developer tools, paving the way for the next generation of dApps on the Core blockchain.
Resources
Support & Assistance
If you have any questions or require further assistance, please reach out to the official Core Dev Forum or Discord for support.