  The primary innovation we pioneer -- focused on blockchain information
security -- is called the Safe-House. The Safe-House is badly needed since
there are many ongoing hacks and security concerns in the DeFi space right now.
The Safe-House is a piece of engineering sophistication that utilizes existing
blockchain principles to bring about greater security when customer assets are
moved around. The Safe-House logic is easily implemented as smart contracts on
any decentralized system. The amount of funds at risk from both internal and
external parties -- and hence the maximum one time loss -- is guaranteed to
stay within the specified limits based on cryptographic fundamentals.
  To improve the safety of the Safe-House even further, we adapt the one time
password (OPT) concept to operate using blockchain technology. Well suited to
blockchain cryptographic nuances, our secondary advancement can be termed the
one time next time password (OTNTP) mechanism. The OTNTP is designed to
complement the Safe-House making it even more safe.
  We provide a detailed threat assessment model -- discussing the risks faced
by DeFi protocols and the specific risks that apply to blockchain fund
management -- and give technical arguments regarding how these threats can be
overcome in a robust manner. We discuss how the Safe-House can participate with
other external yield generation protocols in a secure way. We provide reasons
for why the Safe-House increases safety without sacrificing the efficiency of
operation. We start with a high level intuitive description of the landscape,
the corresponding problems and our solutions. We then supplement this overview
with detailed discussions including the corresponding mathematical formulations
and pointers for technological implementation. This approach ensures that the
article is accessible to a broad audience.
