Mantle Confirms mETH Custody Support by OSL, Asia’s First SFC-Licensed and Insured Digital Asset Custodian, Expanding Regulated Ethereum Yield Access

On June 11, Mantle posted on X that Hong Kong–based OSL now supports custody for mETH. mETH Protocol is a liquid staking token reflecting both staked Etheruem and staking rewards. This integration expands institutional access to regulated Ethereum staking yield channels. OSL asset custodian holds a license from the Hong Kong Securities and Futures Commission. The platform provides insured custody coverage up to US$1 billion for tokenized assets. This move reflects growing demand for secure yield solutions in the crypto sector.

How mETH Enables Ethereum Liquid Staking

The mETH Protocol issues tokens to holders who deposit ETH into its staking pool. Users receive mETH in return for staked ETH and accumulated network rewards. This mechanism supports liquidity while maintaining participation in staking validation. mETH tokens can be used across decentralized finance protocols for yield activities. Institutions value this setup for meeting strict compliance and security mandates. The protocol’s design aligns liquid staking benefits with regulated custodian requirements. Liquid staking via mETH Protocol helps manage network decentralization incentives.

Growing Institutional Adoption of mETH

Since launch, mETH has integrated with more than 40 decentralized finance platforms. Validator services such as Stakefish and Blockdaemon now support mETH staking operations. Major exchanges like Bybit include mETH in their Earn product offerings. Republic Technologies integrated mETH as the first liquid staking token on its balance sheet. These developments demonstrate rising institutional confidence in regulated staking solutions. Growing platform support suggests broader acceptance of liquid staking tokens globally. This corporate move highlights growing integration between public markets and liquid staking assets.

Implications of OSL Custody for Institutional Access

Mantle and mETH Protocol X posts stated that custody support now secures mETH holdings. OSL offers 24/7 OTC brokerage and fiat on-ramp services. The firm bridges traditional finance and digital assets with regulated compliance measures. Its insured custody setup includes SOC 2 Type 2 coverage for client assets. Eugene Cheung, Chief Commercial Officer, commented that the alliance strengthens institutional yield access. He stated “mETH to OSL Custody deepens our commitment to giving professional investors secure access to yield-bearing assets within a fully regulated framework.” Eugene Cheung added, “It also sets the stage for a broader strategic rollout we’ll unveil next month.”

The OSL asset custodian’s service gives institutions compliant access to Ethereum staking yields. Clients avoid the risks of decentralized storage and manual key management burdens. Regulated custody ensures clear audit trails and insurance protections for digital assets. This custody model aligns with standard practices in traditional institutional finance sectors. Investor surveys show increasing preference for third-party custody solutions over self-custody. OSL plans to expand its services through the OSL Wealth unit next month. Future integrations may include more yield-focused digital asset offerings under strict compliance.

Broader Context and Momentum Behind Mantle and mETH

This expansion coincides with the rise of Interest in layer-2 scaling solutions this quarter. A Messari Q1 report ranked Mantle Network among the leading layer-2 ecosystems. The report also noted significant growth in assets locked on layer-2 networks globally. Institutional engagement with crypto is shifting toward regulated participation and secure yield. The mETH and OSL alliance reflects this move toward professional sector involvement. Regulatory-compliant solutions appear poised to guide future crypto asset adoption trends. This development may shape institutional strategies across global crypto markets.