Your first link has refuting or critical comments from such notables as Vitalik Buterin and Brahm Cohen. In case anyone wanted a tl;dr to actually reading and evaluating that 15 minute logical fallacy of a read. And the other ones just reference the first link.
Proof of Work algorithms are not hard to calculate, it's simply designed to increase capital costs to access writing to the database (adding the next 'block' set of transactions to the blockchain).
The actual math amounts to a best effort guess in a lottery for write access to a database.
The network would function just as fast with 3-10 computers as it does with 3 billion times the amount of "computing" power.
In summary, Proof of Work is designed to waste as much energy and capital input as possible.
Even if OP is a Registered Investment Adviser registered with the Securities and Exchange Commission, it sounds like
Kasian Franks could be in violation of The Investment Advisers Act of 1940, 15 U.S.C. § 80b-1 through 15 U.S.C. § 80b-21.
Seems like a conflict of interest which I'd imagine your lawyer should have been aware of if you're part these two ICO fintech startups - starmine.ai and vectorspace.ai
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By minimizing the role of the oracle, instead of relying on one entity, you can rely on the market. Anybody could be the oracle, they'd put their reputation/offer/price on sale and the stakeholders would select one as they wish.
You're still trusting the selected oracle to behave honestly, but they will be operating in a very competitive market which hopefully would lead to better behaviour. They might cheat once, but it would be trivial to switch to a better oracle next time.
CAPEX and OPEX production cost have nothing to do with the market spot price, especially because most of the coins in circulation have been produced or acquired for far far far less than the rate it costs today.
No one cares what it costs you to produce the product.
Most of the coins in circulation already exist, and sellers can easily sell for less than it cost to produce today because most of the coins were produced for far far less than today's cost.