𝗢𝗻 𝗦𝗲𝗽𝘁𝗲𝗺𝗯𝗲𝗿 𝟮𝟰, 𝟮𝟬𝟮𝟲
@Anchorage announced its building support for institutional Bitcoin staking on
@Stacks. If you've been watching
$STX, this isn't a standalone headline, it's the next step in a rollout that's been building since July, and it's worth understanding the full picture rather than just the headline.
𝗛𝗲𝗿𝗲'𝘀 𝘄𝗵𝗮𝘁 𝘄𝗮𝘀 𝗮𝗰𝘁𝘂𝗮𝗹𝗹𝘆 𝗮𝗻𝗻𝗼𝘂𝗻𝗰𝗲𝗱:
institutions will be able to enroll and fund a BTC Bond directly from their Anchorage account, earn weekly BTC rewards, and reclaim their principal at maturity all without their Bitcoin ever leaving Bitcoin L1.
Custody stays with Anchorage Digital Bank, the first federally chartered digital asset bank in the US, the entire time. No wrapping, no bridging, no handing BTC to a third party.
This is possible because of Stacks' PoX-5 upgrade, which activated on Bitcoin block 960,230 back on July 30, 2026. PoX-5 extends Stacks' existing Proof-of-Transfer consensus mechanism so BTC holders can pair their Bitcoin with
$STX and earn native BTC-denominated yield, while keeping their Bitcoin under their own keys on Bitcoin's base layer.
Previous approaches to BTC yield required either bridging to another chain, wrapping into a synthetic token, or trusting a centralized lender PoX-5 was built specifically to avoid all three.
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This isn't theoretical, either. 𝗢𝗻 𝗦𝗲𝗽𝘁𝗲𝗺𝗯𝗲𝗿 𝟭𝟬, 𝟮𝟬𝟮𝟲, Stacks launched its first institutional bonding period, the Genesis Bond, with four participants:
➜ 21shares (the ETP issuer managing $6.5B+ in AUM)
➜ HashKey Cloud
➜ UTXO Management (a Nakamoto Inc. subsidiary)
➜ Sypher Capital.
Together they bonded roughly 250 BTC, targeting a 3% APY paid in BTC, with the first weekly rewards distributed on September 17. A second bonding period is already expected, opening more capacity for institutions that missed the first window.
The Genesis Bond proved the mechanism works. Anchorage plugging in solves the next problem: distribution. Institutions don't need to build new custody relationships or move BTC anywhere new they can access Bitcoin staking on Stacks from inside the custody infrastructure many of them already use.
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𝗔𝗻𝗰𝗵𝗼𝗿𝗮𝗴𝗲 isn't a new entrant looking for credibility here, either. It's the custodian BlackRock added for its Bitcoin and Ethereum ETFs, the primary custodian Grayscale named for its proposed Hyperliquid ETF, and a firm with a disclosed Strategy relationship and a $100M strategic investment from Tether.
When custody at that level integrates with Stacks, it materially lowers the operational bar for the next wave of institutional participants.
For
$STX specifically: every Bitcoin Bond requires pairing BTC with STX as the staking capacity asset it's a structural mechanism, not just sentiment. More institutional bonding activity means more STX being locked to support it.
That's the throughline connecting
𝐏𝐨𝐗-𝟓 → 𝐭𝐡𝐞 𝐆𝐞𝐧𝐞𝐬𝐢𝐬 𝐁𝐨𝐧𝐝 → 𝐀𝐧𝐜𝐡𝐨𝐫𝐚𝐠𝐞'𝐬 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 each step adds a layer of institutional infrastructure on top of the same core mechanism.