Smart contract operating system BOS (BitcoinOS) has launched Grail Pro, a new protocol designed to convert dormant Bitcoin reserves into productive capital while preserving custody standards.

Released Thursday in London, Grail Pro is described as an institutional-grade protocol for trustless bridging and programmable tokens, with all processes verifiable on-chain, on Bitcoin itself.

BOS developed the protocol after having “seen the evolution of Bitcoin” and its continuous growth in interest and adoption among institutions, co-founder and chief executive Edan Yago told Decrypt.

Companies like Strategy are “showing the world that Bitcoin is an institutional-grade treasury asset,” Yago said, pointing out that the trend for digital asset treasuries has “created stronger demand dynamics.”

“Bitcoin was designed to reward early adopters and long-term holders,” Yago said. Through the new protocol, BOS is “building what institutions want and need,” he added.

The protocol targets about six million Bitcoin worth about $693 billion held by custodians that largely sits idle over counterparty risk concerns. These holdings are often kept in digital asset trusts or reserve accounts, according to a recent report by crypto exchange Gemini.

Grail Pro is presented as an option to deploy and make use of these massive holdings.

In a pilot, partners locked BTC to mint 100 zkBTC, a Bitcoin-backed token verified with zero-knowledge proofs and transferable 1:1 with native Bitcoin. The process shows how assets could be used in lending, trading, or yield strategies without losing custody.

Unlike earlier bridge models, Grail Pro employs a cosigner system that requires institutional approval for every minting or release request. Each request is verified using zero-knowledge proofs and must be confirmed by at least 16 independent operators. BOS claims this structure reduces exposure to fraud and ensures institutions remain in custody at all times.

The system also includes support for programmable financial products, custom vaults, and real-time monitoring.

Last week, crypto markets shed nearly $1.7 billion in liquidations, showing how markets remain shaped by speculation and leverage even as macroeconomic factors such as the Federal Reserve’s rate cuts play out.

It is against this backdrop that BOS argues for institutional-grade infrastructure to move crypto from “casinos to capital markets.” Grail Pro is part of what BOS describes as “BTCFi,” or Bitcoin-based decentralized finance, pitched as a way of channeling dormant assets into active capital.

The push for decentralized finance using Bitcoin isn’t just about market mechanics, but also about resilience in uncertain political and economic environments.

Drawing on his own experience growing up under apartheid in South Africa, where his family once smuggled gold across borders, Yago told Decrypt he learned “how governments, countries, and laws can change.” Gold and Bitcoin, he added, are “supranational assets that don’t rely on the good functioning of one government or another.”

In his view, that independence is “what makes them so important now,” as institutions search for stable foundations in volatile times.