Twinstake Serves as Core Validator Infrastructure for REX-Osprey's First-Ever U.S. Solana Staking ETF

Twinstake is proud to serve as the core validator infrastructure provider for the newly launched REX-Osprey SOL + Staking ETF (ticker: SSK), now trading on CBOE, the first-ever U.S. Solana Staking ETF. This groundbreaking ETF represents the first in the United States to incorporate native Solana staking into its structure, marking a historic milestone for both the crypto and traditional finance sectors. A portion of the fund's SOL allocation is already staked with Twinstake, underscoring both confidence in our industry-leading validator capabilities and the growing institutional appetite for staking-enabled investment vehicles.

Why this is significant

As the first-ever Solana staking ETF in the U.S. market, this product marks a revolutionary shift in how ETF issuers approach digital assets. While traditional crypto ETFs have focused on passive exposure, the REX-Osprey vehicle actively engages Solana's proof-of-stake architecture by leveraging on-chain participation. As the premier validator in the space, Twinstake's role is to deliver the technical infrastructure required to support that complexity in a compliant, secure, and operationally resilient manner.

This launch follows Twinstake's existing mandate as validator infrastructure for 3iQ's SOLQ ETF, the first Solana staking ETF listed in North America. With Osprey's product now active in the US market, this development signals a broader trend toward integrating staking into mainstream investment products, with Twinstake positioned as the leading validator infrastructure provider for institutional-grade staking solutions.

The structure of the ETF

The ETF holds a diversified basket including:

• Direct SOL exposure, a portion of which is staked via Twinstake-operated validators
• Positions in other staking-integrated vehicles, such as 3iQ's SOLQ ETF
• Exposure to select liquid staking tokens (LSTs) to enhance capital efficiency and flexibility

The ETF remains non-custodial in design. Twinstake does not take custody of assets. All staking operations are performed with validator infrastructure directly integrated into the custodian-managed architecture of the fund.

Built for institutional staking

As the market leader in institutional staking, Twinstake delivers a complete infrastructure stack tailored to the operational demands of ETF and ETP issuers:

• Enterprise-grade Solana validator infrastructure with 24/7 monitoring and observability
• SOC 2-backed processes, dedicated uptime monitoring, and slashing insurance
• API-based reporting to support daily NAV and redemption workflows
• Compliance-aligned validator configurations to uphold regulatory standards

Our infrastructure has been live and supporting Osprey's initial delegation on Solana mainnet in advance of launch, ensuring operational readiness from day one.

About REX-Osprey

REX–Osprey is brought to you by REX Shares & Osprey Funds.

REX is an innovative ETP provider specializing in alternative-strategy ETFs and ETNs, including the MicroSectors and T-REX lines of leveraged and inverse trading tools, as well as newly launched option-based income strategies. With decades of experience, the firm is known for creating inventive solutions tailored to the needs of investors and traders. Osprey Funds, originally launched in 2019 as REX Shares’ crypto division and spun off in 2021, brings deep expertise in both traditional markets and digital assets, having helped launch over 100 exchange-traded products and invested in Bitcoin since 2013.

"This partnership underscores what Twinstake is built for: enabling ETF and ETP issuers to safely participate in staking without compromising liquidity, compliance, or control. We are proud to provide the foundation for Osprey's groundbreaking innovation as the first U.S. Solana staking ETF."— Andrew Gibb, CEO, Twinstake

A signal of what's next

With institutional staking momentum building, the REX-Osprey ETF represents a major signal to the market. As the first of its kind in the U.S., it proves that staking rewards can be accessed within a compliant, liquid, investor-grade wrapper if the infrastructure is built for it.

Twinstake is proud to lead that transformation as the validator of choice for institutional staking.

For ETF and ETP issuers evaluating staking integration, Twinstake offers institutional infrastructure, programmatic reporting, and operational assurance. Contact us at info@twinstake.io to explore partnership opportunities.

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Disclaimer
This article is for informational purposes only and does not constitute financial, investment, or legal advice. Twinstake makes no guarantees about the accuracy or completeness of the information provided. Participation in blockchain networks involves risks, including the potential loss of assets. Please conduct your own research and consult a qualified professional before making any decisions.

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