Siacoin To Undergo Hard Fork on 6 June

SIA token holders should pay attention to the upcoming hard fork at the beginning of June.

Sia network will undergo its most transformative upgrade since its inception over a decade ago. The v2 hard fork, activating at block height 526,000, marks a pivotal moment for the project, transitioning its core architecture to a more scalable and efficient framework. This overhaul modernizes Sia’s consensus model, replacing its legacy UTXO system with Utreexo—a cryptographic accumulator designed to reduce node storage demands while maintaining security. It is expected that this upgrade will happen on June 6th.

The Fork’s Two-Phase Rollout
The upgrade unfolds in two critical phases. Beginning June 6, the network enters the “Allow Height” period, enabling v2 transactions while retaining backward compatibility with older v1 blocks. This grace period ensures a smooth transition for users, developers, and exchanges. However, by July 4–6 (block 530,000), the “Require Height” phase takes effect, fully deprecating v1 transactions. All participants must upgrade their software before this deadline to avoid service disruptions.

Implications for Users and Developers
For renters and hosts, the fork brings tangible improvements: faster uploads/downloads, browser-based transfers without plugins, and enhanced protocol efficiency. Those who delay upgrading until July risk losing access to these features and facing operational downtime. Meanwhile, Siacoin holders can breathe easy—no asset migration is required, but they must adopt the new walletd software by July to transact securely. Miners face minimal hardware changes but should confirm their pools support v2 validation rules post-July.

Technical Leap Forward
The shift to Utreexo slashes node storage requirements, empowering lightweight clients and improving network accessibility. This change, paired with a streamlined consensus codebase, lays the groundwork for advanced functionalities like atomic swaps and enterprise-grade tooling. Developers anticipate these upgrades will catalyze a wave of new applications, from mobile interfaces to SDKs tailored for large-scale storage providers.

Navigating the Transition
Users should immediately download the latest software: renters and hosts require renterd/hostd, while holders need walletd. Exchanges and third-party services face urgency, too—delayed upgrades could freeze deposits or withdrawals. The Sia team emphasizes proactive preparation, urging stakeholders to monitor block explorers as June 6 approaches.

Why This Upgrade Matters
Beyond technical refinements, the fork signals Sia’s ambition to compete directly with centralized cloud giants. By reducing operational friction and resource demands, the network aims to attract mainstream adopters seeking decentralized alternatives. For investors, the upgrade could reignite interest in SC tokens, particularly if post-fork developments accelerate partnerships or enterprise adoption.

As the countdown to June 6 continues, the Sia community stands at the threshold of a reinvigorated ecosystem—one poised to redefine decentralized storage for the next decade.

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☝Disclaimer: This article is for informational purposes only and does not constitute financial advice. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.

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