Swiss digital asset bank Sygnum Bank announced a partnership with Bitcoin lending startup Debifi to develop MultiSYG, a multi-signature (multisig) lending platform aimed at institutional and high-net-worth clients. The launch is scheduled for the first half of 2026 and promises greater security, transparency, and autonomy over BTC collateral.
MultiSYG was designed to allow borrowers to retain some control over their collateral, a crucial difference from centralized crypto lending models. The system utilizes a multisignature wallet that requires three of the five available signatures—involving Sygnum, the client, and other independent parties—to authorize any movement of the collateral.
This model eliminates the possibility of rehypothecation, a common practice in traditional financial institutions where the borrower's collateral is reused without consent. Furthermore, MultiSYG ensures full on-chain transparency, allowing the borrower to track the status of their BTC throughout the loan cycle.
According to Debifi CEO Max Kei, the project responds to the growing demand for credit products that combine the security of the regulated banking system with user sovereignty over their assets. "Borrowers shouldn't have to blindly trust a custodian," he stated.
Pascal Eberle, project leader of MultiSYG at Sygnum, highlighted that the system "combines the best of both worlds—the ability to own your own keys while still accessing regulated banking products and a high level of service." He added that borrowers will have access to competitive pricing, flexible terms, and fast settlement, without giving up partial control over their bitcoins.
With the advancement of integration between traditional finance and blockchain, MultiSYG represents an important step in the creation of secure Bitcoin-backed credit solutions. The initiative reflects the trend among banks and financial institutions toward hybrid custody models that combine regulatory security and digital autonomy for institutional investors.