BlackRock has launched two blockchain-based money market products aimed at institutional cash management and stablecoin reserve operations. The August 3 rollout includes an onchain share class of the existing BlackRock Select Treasury Based Liquidity Fund and a newly created reserve vehicle, extending the asset manager’s tokenization strategy beyond BUIDL.
The products use different operating models. BSTBL OnChain Shares are issued on Ethereum with BNY acting as transfer agent and tokenization provider, while the BlackRock Daily Reinvestment Stablecoin Reserve Vehicle, or BRSRV, uses Securitize and is designed for access across multiple blockchains. Neither product is itself a stablecoin.
Reserve Strategy Centers on Treasury Liquidity
Both funds seek current income while prioritizing liquidity and principal stability. Their portfolios are limited to cash, U.S. Treasury obligations maturing within 93 days and overnight repurchase agreements backed by Treasuries, with average-maturity limits imposed under Rule 2a-7.
BlackRock intends the OnChain Shares to qualify as eligible reserve assets for permitted U.S. payment stablecoin issuers under the GENIUS Act. That positioning remains dependent on regulatory interpretation, because federal agencies are still developing implementation standards that could affect eligible holdings and operating procedures.
BRSRV is built specifically for digitally native institutional investors and includes daily dividend reinvestment. The fund is intended to let stablecoin issuers and other crypto-sector intermediaries hold regulated money market shares within blockchain-based workflows, although BlackRock has not publicly identified every supported network.
BSTBL follows a narrower structure as a tokenized class of a fund operating since 1990. Its ERC-20 shares can move between approved Ethereum wallets, subject to legal and transfer-agent controls. BNY maintains the official ownership record through blockchain entries combined with an offchain identity register, with smart contracts restricting transfers to registered wallets.
Tokenized Cash Products Move Beyond BUIDL
BlackRock’s BUIDL fund established its first major tokenized cash product and has since been integrated as yield-bearing collateral by platforms including OKX. BSTBL and BRSRV address a different segment through registered money market fund structures and explicit reserve-management use cases, rather than simply extending BUIDL to another network.
The launch comes as RWA.xyz tracks approximately $37.3 billion in distributed tokenized-asset value. Invesco has also filed for an onchain stablecoin reserve fund, indicating that major asset managers are competing to provide regulated liquidity infrastructure for digital-dollar issuers.
The blockchain format does not remove conventional fund or technology risk. BlackRock warns that the products cannot guarantee a constant $1 share value and are neither bank accounts nor FDIC-insured deposits, while transfers and recordkeeping remain exposed to operational, cybersecurity and regulatory failures.
The two launches give institutions another route for holding short-term Treasury exposure inside approved digital wallets. Their long-term significance will depend on reserve allocations, blockchain adoption and final GENIUS Act rules, rather than tokenization alone.
