SIX Network has fully upgraded SIX Protocol, its Layer 1 blockchain infrastructure, to Version 4.0. This is a major network upgrade that elevates the entire infrastructure stack to support RWA use cases, on-chain finance, and enterprise Web3 infrastructure for businesses and institutions that require a robust blockchain foundation through SIX Protocol.

This upgrade is an end-to-end enhancement of SIX Protocol’s architecture, from the Core Architecture, Consensus, and Security systems to full EVM compatibility, positioning SIX Protocol as a modern blockchain that can seamlessly integrate with global ecosystems.

Key Infrastructure Upgrades in SIX Protocol 4.0

1) Upgraded to the Latest Cosmos SDK (v0.50)
SIX Protocol has upgraded to Cosmos SDK version 0.50, the same new-generation SDK that leading Cosmos-based projects such as Neutron and Cosmos Hub (Gaia roadmap) are adopting to enhance network security and performance.

This version modernizes the chain’s core architecture in several key areas:

• Strengthened security standards with more robust cryptographic primitives

• Future-proof modular architecture designed to support DeFi and Tokenization development with greater flexibility

2) Migrated Consensus to CometBFT
This upgrade significantly improves network stability, enabling the chain to handle modern transaction loads more reliably while reducing the risk of forks or errors, critical for production-grade usage required by businesses and enterprises.

• Enhanced core consensus system for greater resilience and reduced fork risks
• Improved validator communication for faster and more stable block processing
• Increased capacity to support higher on-chain transaction volumes efficiently

3) Full EVM Compatibility
This makes the blockchain fully interoperable with the Ethereum ecosystem, enabling applications to operate exactly like on Ethereum, without learning new tools, modifying code, or changing workflows.

• Deploy Ethereum smart contracts instantly with zero code changes

• Supports the latest Ethereum upgrades from Shanghai to Cancun
• Compatible with major ETH development tools such as Hardhat and Foundry
• Any dApp running on Ethereum can run on SIX immediately, including DEXs, NFT marketplaces, and token-based applications

Enabling SIX Protocol to function like Ethereum at the EVM level.

4) Dual-Chain Architecture Combining Cosmos and EVM in One Chain
Dual-Chain Architecture allows SIX Protocol to operate as both a Cosmos chain and an Ethereum-compatible chain natively, without relying on bridges or separate layers like other blockchains. This results in smoother and more secure usage.

• Run Cosmos Modules and the EVM simultaneously at the native level

• Migrate or deploy Ethereum smart contracts instantly with zero friction
• Transfer assets directly between Cosmos and EVM without bridges
• Reduced bridge hack risks, faster transactions, and lower costs

5) SIX Protocol’s Native Precompile System
SIX’s native Precompile technology enables smart contracts to execute key blockchain functions as if they were built-in operations, reducing gas costs and improving stability. Key functions include:

• Stake and unstake directly through smart contracts
• Automated reward distribution on the EVM
• Single-command token operations across ecosystems
• Support for NFT metadata for Pas.ss and the Dynamic Data Layer system

6) Strengthened Security Architecture
The security and reliability framework of the chain has been enhanced to meet enterprise usage requirements.

• New slashing model to improve validator security

• Modular separation to prevent system-wide cascade failures
• Improved error-handling for greater operational stability

7) Support for Modern Cross-Chain Standards
Engineered for seamless and secure connectivity with external blockchain ecosystems.

• Supports IBC Protocol v8.6.1 for global inter-chain communication
• Rate limit protection for secure cross-chain operations
• Supports asset integration from major blockchain networks in the market

Enhancing Infrastructure for Enterprise and Institutional Blockchain Connectivity 

Beyond enhancing the blockchain’s infrastructure to support comprehensive and efficient operations, we recognize that the world is rapidly entering an era of RWA Tokenization, Digital Securities, Programmable Finance, Payment Finance Decentralization, and Neobank models. To support these future demands, SIX Protocol requires a strengthened and scalable architecture.

The SIX Protocol 4.0 upgrade now fully prepares the chain for enterprise-grade RWA Tokenization and on-chain financial modules—whether staking, cross-chain operations, EVM applications, or digital systems that may migrate to SIX Protocol, which now supports enterprise-level stability.

This marks another significant milestone for SIX Network in developing blockchain and Web3 infrastructure for businesses in Thailand and across Asia. We aim to ensure that this advancement becomes the foundation of an ecosystem where $SIX can grow and achieve sustainable real-world adoption.