You're going to make bank

And how do you prevent a refund request on day 44?
with an invoice and tracking to paypal...
Exactly, state no returns or refunds allowed for any reason including DOA. Use ceritified, insured, signature delivery. Paypal will actually work to prevent huge chargebacks, especially in a situation with documentation.
An ASIC for mining bitcoin it's a "simple" project, only an Algorithm implemented more and more times...
But making 20nm wafers isn't "simple". Even if KnC does everything right, there's a very good chance TSMC will be delayed in getting the wafers made.
Is ORSoC doing the design again?
And this is what I said many pages back.. 20nm isn't that "easy"