Deep Dive
1. Mainnet Node Upgrade to ZEN 5.0.7 (15 July 2025)
Overview: This was a mandatory software update for all node operators on the legacy Horizen mainchain and testnet. It required no hard fork but was essential for maintaining network operations before the subsequent migration.
The release of ZEN version 5.0.7 was the final update to the original Horizen node software. Its primary function was to ensure network stability and prepare nodes for the impending shutdown of the legacy chain. Failure to upgrade before the specified deadline would have resulted in nodes falling out of consensus.
What this means: This is neutral for ZEN because it was a necessary, routine maintenance update with no new features. It ensured a smooth and secure transition for the network's infrastructure as the project prepared for its major overhaul.
(Bitget)
2. Completion of ZEN Token Migration to Base (24 July 2025)
Overview: This was the defining codebase update, marking Horizen's transition from an independent Layer 1 blockchain to an ERC-20 token on Base. The legacy mainchain and EON sidechain were permanently shut down.
The migration involved deploying new smart contracts on Base and creating a claim portal for users to convert their native ZEN to the new ERC-20 standard. This technical shift enables full Ethereum Virtual Machine (EVM) compatibility, allowing developers to use popular tools like Solidity. It also integrated ZEN into Base's DeFi ecosystem, with immediate liquidity pools on Aerodrome and Uniswap.
What this means: This is bullish for ZEN because it drastically improves the token's utility and accessibility. Users benefit from faster transactions, lower fees, and seamless interaction with the vast Ethereum ecosystem, while developers gain a powerful, privacy-ready platform for building applications.
(CoinMarketCap)
3. Launch of 1M ZEN Developer Grant Program (10 July 2025)
Overview: This strategic initiative allocates 1 million ZEN (worth approximately $7.4 million at launch) over five years to fund the development of privacy-first applications on the new Horizen 2.0 network.
Managed by Thrive Protocol, the program uses a milestone-based funding model to ensure developer accountability and project progress. It targets key sectors like confidential finance (40% of funds) and privacy-preserving AI (30%). The codebase supports this by providing the underlying EVM-compatible infrastructure and privacy tools for grantees to build upon.
What this means: This is bullish for ZEN because it directly funds the creation of new, useful products on its network. A growing ecosystem of applications increases demand for the ZEN token, enhances network security through staking, and validates Horizen's technology as a viable platform for the future of private computing.
(CoinMarketCap)
Conclusion
Horizen's latest codebase updates culminate in a strategic pivot from a mining-based privacy coin to a modern, EVM-compatible privacy appchain on Base. This technical foundation now supports lower costs, greater developer accessibility, and a funded ecosystem—key drivers for long-term adoption. With the infrastructure in place, how quickly will developers leverage its privacy tools to build the next wave of confidential applications?