Blockchain Article

Neo X open sources core repositories following MainNet v0.4.2 upgrade

On November 4, 2025 by

Neo has made several core Neo X repositories public on GitHub, marking a new phase of openness and collaboration for the EVM-compatible chain. The move follows the release of Neo X MainNet v0.4.2, which introduced a production-ready implementation of its MEV-resistant transaction system.

Core repositories released

Neo X is developed by Bane Labs, a collaboration between Neo Global Development, Neo SPCC, and AxLabs. The newly public repositories include the chain’s node implementation, bridge contracts, cryptographic libraries, and supporting developer documentation.

The following repositories have been made public, forming the foundation of Neo X’s interoperable infrastructure that connects Neo N3 (NeoVM) and Neo X (EVM):

  • go-ethereum: Neo X node implementation based on geth, providing full EVM compatibility.
  • docs: Technical documentation for Neo X development, deployment, and interoperability.
  • bridge-evm-contracts: Smart contracts enabling cross-chain operations between Neo X and Neo N3 on the EVM side.
  • bridge-neo-contracts: NeoVM contracts supporting the Neo N3 ↔ Neo X bridge on the Neo side.
  • neox-tpke-lib: TypeScript utilities for implementing Threshold Public Key Encryption within Neo X.
  • neox-tpke-examples: Demonstration dApps showing TPKE use cases and integration examples.
  • mpc: Codebase supporting the Multi-Party Computation ceremony used in Neo X’s zero-knowledge DKG setup.
  • zk-dkg: Zero-knowledge library for Neo X’s anti-MEV key generation and distributed encryption within the Geth node.

Development timeline

First introduced at the Neo APAC Hackathon in October 2023, Neo X has evolved from concept to a production network through multiple TestNet and MainNet releases. Its anti-MEV architecture, powered by enveloped transactions, threshold encryption, and dBFT consensus, is designed to enforce fair transaction ordering.

Over the past two years, the Bane Labs team has conducted audits with Red4Sec, BlockSec, Hacken, and Secure3 to validate Neo X’s architecture and interoperability layer.

With the open-sourcing of these repositories, Neo X transitions from closed-door development to an open-source model that invites developer and researcher participation.

Looking ahead

Neo X and Neo N3 operate in tandem to deliver a unified ecosystem that bridges EVM compatibility with Neo’s dBFT-based consensus and cross-chain framework.

The interoperability stack will soon expand with the Arbitrary Message Bridge, further extending communication between chains.

The original announcement can be read at the link below:
https://x.com/Neo_Blockchain/status/1983517762799686026

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