PoX-5 hardfork activation

The PoX-5 hardfork on the Stacks network activated on July 30, 2026, at Bitcoin block 960,230. The upgrade concerns the coins STX and BTC and established the protocol foundation for Bitcoin Staking on Stacks.

What is happening

PoX-5 is a network upgrade to the Stacks protocol that activated at a specific Bitcoin block height, 960,230, on July 30, 2026. According to the source article, this hardfork established the protocol foundation required for Bitcoin Staking, a mechanism allowing BTC holders to earn BTC-denominated yield while keeping their Bitcoin on Bitcoin's base layer (L1).

The activation of PoX-5 served as the technical groundwork that later enabled the launch of the Genesis Bond, the first institutional bonding period for Bitcoin Staking on Stacks. Participants in that later launch included 21shares, HashKey Cloud, UTXO Management, and Sypher Capital, who together bonded approximately 250 BTC. The hardfork itself did not change the underlying Proof of Transfer mechanism, which has operated since January 2021 and has distributed more than 4,200 BTC to network participants, but it provided the updated protocol rules necessary for the Bitcoin Staking feature set described in the article.

As this event is dated in the past relative to the article's reporting and to the "Today" reference point, PoX-5 has already activated. The sources do not describe any issues, delays, or complications with the hardfork itself; they present it as a completed step that preceded and enabled the Genesis Bond launch.

Why it matters

For holders of STX and BTC, the PoX-5 hardfork is significant because it represents the protocol-level change that made institutional Bitcoin Staking possible on Stacks. Network upgrades of this kind can affect how staking rewards are generated and distributed, and in this case the hardfork directly preceded a notable institutional product launch involving several named asset managers and infrastructure providers.

For traders and ecosystem participants, understanding the sequencing of PoX-5 activation and the subsequent Genesis Bond launch may be useful context when evaluating the development trajectory of Stacks' Bitcoin-native finance offerings. This is not financial advice, and no price or market effects are claimed here beyond what the sources describe.

Key details

• Date: July 30, 2026 (confirmed, exact day)
• Project: Stacks
• Coins: STX, BTC
• Category: Network Upgrade
• Status: Confirmed (already occurred)
• Source: The Defiant