Deep Dive
1. Protocol Stability Fixes (18 December 2025)
Overview: This patch introduced optimizations like PUSH0 opcode support to reduce gas costs, automated node recovery during sync failures, and trusted DNS peers for reliable initial syncing. Infrastructure tools were upgraded for better monitoring.
What this means: This is bullish for Harmony because it lowers developer costs, minimizes network downtime, and simplifies node operations—making the ecosystem more accessible and reliable. (Source)
2. EVM Compatibility Upgrades (31 October 2025)
Overview: Harmony implemented EIP-2537 (BLS12-381 curves) for zk-proofs and bridges, plus EIP-2935 for historical block-hash access via ring buffers. These align with Ethereum’s Prague hardfork specs.
What this means: This is bullish for Harmony because it enables advanced DeFi/cross-chain apps, attracts Ethereum developers with familiar tooling, and improves interoperability without breaking changes. (Source)
3. Stream Sync Deployment (11 August 2025)
Overview: Stream Sync replaced DNS-based synchronization with decentralized peer-to-peer block sharing. Three PRs (#4935–#4937) removed legacy code, optimized peer discovery, and configured 2-shard compatibility.
What this means: This is bullish for Harmony because it accelerates node bootstrapping, reduces centralization risks, and strengthens network resilience under load—key for validator participation. (Source)
Conclusion
Harmony’s codebase prioritizes Ethereum alignment and network robustness, addressing developer needs and operational efficiency. Will these upgrades accelerate adoption ahead of Q1 2026’s finality-focused hardfork?