Sygnum Bank and Debifi Launch MultiSYG Bitcoin Lending With Shared Multisig Custody

Swiss digital asset bank Sygnum has partnered with Debifi to launch MultiSYG, a regulated bitcoin-backed loan product utilizing dedicated on-chain multisignature wallets. Pledged collateral is secured in 3-of-5 multisig accounts with keys shared among the borrower, Sygnum, and independent keyholders, offering a maximum loan-to-value ratio of 65%. The collateral remains off-balance-sheet, bankruptcy-remote, and not rehypothecated under Swiss law. The rollout comes as Bitcoin collateral surpassed 80% of Sygnum's pledged loan volume, up from 63% in 2023, while more than 20% of the bank's clients now hold Lombard loans.