I'm sorry, but this is very naive about security, and cryptography, and blockchains. Allow me to quote some experts:

[0] > "Crypto is fundamentally unsafe. People hear that crypto is strong and confuse that with safe. Crypto can indeed be very strong but it’s extremely unsafe" -- Nate Lawson (Root Labs)

[1] > "We don't even really know how to build secure systems out of secure parts, let alone out of parts and processes that we can't trust" - Bruce Schneier

[2] > "If you think cryptography is the answer to your problem, then you don't know what your problem is" - Dr. Peter G. Neumann