Deep Dive
1. Mandatory Node Upgrade (15 July 2025)
Overview: This was a mandatory maintenance release for node operators running the legacy Horizen mainchain. It required action before a hard deadline to ensure continued network access.
The update, version ZEN 5.0.7, was made available for download via GitHub and Docker. It did not introduce new features via a hard fork but was essential for compatibility. The previous version (ZEN 5.0.6) was scheduled for deprecation on 11 June 2025 at a specific block height. Node operators who failed to upgrade by this cutoff risked being disconnected from the network.
What this means: This is neutral for ZEN as it was a routine, backward-compatible maintenance update for the old chain. Its primary purpose was to ensure stability and service continuity for infrastructure operators during the transition period before the major migration to Base.
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2. Consensus & Staking Finalized (8 November 2024)
Overview: This update marked the completion of all protocol-level work for Horizen 2.0's consensus and staking mechanisms, a foundational step for the new network.
The team finished preparations for the AURA (Authority-Round) consensus algorithm, a proof-of-stake based system where collators are selected to produce blocks. This work is crucial for network security and forms the backbone of ZEN's updated tokenomics, where staking will play a key role.
What this means: This is bullish for ZEN because it represents critical, behind-the-scenes progress on Horizen's major upgrade. Completing this core protocol work de-risks the development timeline and sets the stage for a more secure, efficient, and stake-secured network in the future.
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Conclusion
Horizen's recent codebase activity has been strategically split between maintaining the legacy chain and building the new one, demonstrating a managed transition. The completion of core protocol components for Horizen 2.0 suggests the project is methodically advancing toward its next-generation architecture. How will developer activity shift now that the foundational layer is in place?