Deep Dive
1. Protocol Fixes & PUSH0 Support (18 December 2025)
Overview: This update made the network safer and more consistent, particularly around how transactions use gas. It also helps nodes recover automatically if they get stuck, reducing manual intervention for validators.
The core change is support for the PUSH0 Ethereum opcode, which allows smart contracts to be written more efficiently, reducing their size and the gas cost to run them. Sync behavior was improved so nodes can self-heal during outages, and new nodes now start with trusted peers by default for a more reliable initial setup. Infrastructure tooling was also upgraded for better monitoring.
What this means: This is bullish for ONE because it makes the network more reliable and cheaper for developers to build on, which could attract more projects and users. Better node recovery means less downtime and a smoother experience for everyone.
(Harmony 💙)
2. Major EVM & Networking Upgrades (31 October 2025)
Overview: This was a significant network upgrade that improved Harmony's compatibility with Ethereum, enhanced its cryptographic capabilities, and overhauled how nodes synchronize with the blockchain.
The update implemented EIP-2537, enabling BLS12-381 cryptographic operations (the same standard used for zero-knowledge proofs on Ethereum), which allows for faster and cheaper verification. It also added EIP-2935, giving smart contracts access to a deeper history of past block hashes for new use cases like oracles. Furthermore, the new Stream Sync feature replaces the old DNS-based synchronization with a more distributed, peer-to-peer method for faster and more resilient node bootstrapping.
What this means: This is bullish for ONE because it makes the platform more attractive to Ethereum developers, enabling advanced applications like zk-bridges. Faster and more reliable node syncing strengthens the network's overall health and decentralization.
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3. Stream Sync Devnet Milestone (11 August 2025)
Overview: This update marked a major technical achievement by getting the new Stream Sync system running stably on a development network, paving the way for its mainnet release.
A core developer achieved a milestone where the entire devnet ran stably from genesis, syncing 20 million blocks without issues. This work involved submitting pull requests to remove old, legacy synchronization code and refactor the architecture for the new system. Other improvements included optimizing how nodes discover peers for faster startup and aligning configurations with Harmony's 2-shard architecture.
What this means: This is bullish for ONE because it demonstrates tangible progress on a critical infrastructure project. A successful Stream Sync will make the network more robust and scalable, which is essential for long-term growth and user adoption.
(Harmony 💙)
Conclusion
Harmony's recent development trajectory is clearly geared towards strengthening core infrastructure, enhancing Ethereum compatibility, and improving network resilience. These updates collectively aim to create a more developer-friendly and reliable platform. Will successful implementation of these upgrades help ONE carve out a sustainable niche in the competitive Layer 1 landscape?