Coinkite’s Coldcard Bug Exposed Single-Sig Risk. Multi-Vendor Multisig Is the New Bitcoin Custody Baseline

Bitcoin Magazine Coinkite’s Coldcard Bug Exposed Single-Sig Risk. Multi-Vendor Multisig Is the New Bitcoin Custody Baseline Coinkite now forces dice rolls and key-press entropy on new Coldcard seeds. The lasting lesson from the July–August 2026 thefts is not to abandon…