Jack Dorsey’s Payments Startup Square Open-Sources Bitcoin Cold Storage Solution

San Francisco-based mobile payments firm Square announced it is open-sourcing its Bitcoin cold storage solution, which is now available on Github.
Mobile Payments Startup Square Open-Sources Hardware Security Modules (HSMs) and Wallet Auditing Tool
The company founded by Jack Dorsey, who is also CEO of Twitter, has built out its cryptocurrency infrastructure when it started offering Bitcoin payments with Cash App in late 2017.
The documentation, code, and tools for “Subzero” –