Deep Dive
1. Mainnet Node Software Upgrade (June 2025)
Overview: This was a maintenance release for the legacy Horizen mainnet, focusing on bug fixes and stability improvements without requiring a network hard fork. It ensured the network remained reliable during the final stages before the major migration.
The upgrade to ZEN 5.0.3 was an official release for both mainnet and testnet nodes. Its primary purpose was routine maintenance, addressing minor issues to optimize performance before the project's strategic shift to a new architecture. For node operators, it was a straightforward update with no disruptive chain splits.
What this means: This is neutral for ZEN as it was a routine technical housekeeping task. It helped ensure a smooth and stable experience for users and node operators on the old chain right up until its planned sunsetting.
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2. Testnet Hardfork for Staking Rewards (June 2025)
Overview: This update implemented a new delegated staking mechanism on the Gobi testnet, allowing users to earn rewards through smart contracts and receive payouts more frequently.
The hardfork executed the proposals from ZenIP 42404. Key changes included a new stake management system that supports distributing rewards to delegators via smart contracts, moving away from a manual weekly process. It also introduced a new algorithm to drip-feed rewards from the mainchain across each epoch, providing a more consistent flow.
What this means: This is bullish for ZEN because it lays the technical foundation for a more accessible and efficient staking system. It promises a smoother, more automated way for token holders to earn yield, which could encourage more participation and network security in the future.
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3. Horizen 2.0 Consensus & Migration Prep (2025)
Overview: This foundational work completed the core protocol mechanics for Horizen's transformation, finalizing a new Proof-of-Stake system and ensuring a seamless path for users to move their tokens.
The team finished all preparation work on the consensus and staking mechanisms for Horizen 2.0, which will use the AURA (Authority-Round) consensus algorithm. Simultaneously, they completed the backend work for migrating $ZEN from the old mainchain to the new Horizen 2.0 chain on Base. This setup enables a simple claim process for holders once the new mainnet goes live.
What this means: This is extremely bullish for ZEN because it represents the completion of a major architectural overhaul. The shift to a faster, modern PoS system and a seamless migration plan reduces technical risk for holders and positions the network for greater scalability and integration within the vibrant Base and Ethereum ecosystems.
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Conclusion
Horizen's recent codebase activity has been dominated by the monumental transition to Horizen 2.0, shifting from an independent blockchain to a privacy-focused appchain on Base. This involved critical final preparations on consensus, staking, and user migration, marking a strategic pivot towards enhanced performance, developer accessibility, and ecosystem liquidity. How will the rollout of the new AURA consensus and staking mechanisms influence network participation and security in the coming months?