Ruby Quiz - (Crypto) Blockchain Contract Edition - Challenge #2 - Code Challenge #2 - Create a PonzICO Investment Contract - Blockchain Performance Art

Hello,

  to kickstart the new ruby quiz (crypto) blockchain contract edition
 let's add another (easier) coding challenge:

   Challenge #2 - Create a PonzICO Investment Contract - Blockchain
Performance Art [1]

    Let's use the live and "real world" blockchain performance art
  PonzICO investment contract [2] running on the Ethereum world computer.

  Read the PonzICO White Paper [3] for how the investment scheme and
dividend payouts work and what your money will get used for (hint:
thanks for the free Tesla - don't forget to vote on the color :-) and
maybe a two bedroom condo in San Francisco).

   Can you do better (than the JavaScript-like Solidity "world standard")?

   Post your code snippets (or questions or comments) on the
"official" Ruby Quiz Channel, that is, the ruby-talk mailing list
right here.

  Happy hacking and (crypto) blockchain contract scripting with sruby.

[1] https://github.com/s6ruby/quiz/tree/master/002
[2] https://etherscan.io/address/0x1ce7986760ade2bf0f322f5ef39ce0de3bd0c82b/#code
[3] https://ponzico.win

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