Sygnum, Debifi to Launch MultiSig Bitcoin Loans H1 2026

Swiss digital-asset bank Sygnum and Bitcoin lender Debifi announced MultiSYG, a bank-backed Bitcoin loan platform due in the first half of 2026 that lets borrowers take fiat loans without surrendering full custody of their BTC. The product uses a Bitcoin-native 3-of-5 multisignature escrow wallet with distributed key management so any movement of collateral requires three of five key holders to authorize. By design MultiSYG prevents rehypothecation and lets borrowers verify holdings on-chain while offering bank-grade pricing, drawdown flexibility and regulatory oversight. The platform targets institutions and high-net-worth clients but Sygnum says it will be available to all its customers at launch. The partners say the model combines the security of shared self-custody with the structure and reliability of regulated banking.