This was made about a year ago and I feel that while much has changed, much more has remained the same. However there are many differnt opportunties out there these days now that cryptocurencies are picking up more mainstream appeal. I suspect that much of blockchins will come down to quality assurances and reliabilities so long as they stick to valid levels of granularity (as in matched per lot per part in a unique combination but not necessarily an an easily copyable order. Blockchains would need to have an active element of transfer to enable enforcability.

What is the best time to buy bitcoin?

In 2009. The 2nd best time is now. We're in a time to where the price of coin is inevitable to crash downward but at each pass of it going downward you lose the chance to acquire more. Or simply ignorethis and don't buy/earn cryptocurrency in any capacity.

I have not checked to see if any of the services are shut off or cease to work. Let me know if you guys find anything that should be updated or added. Does something like this exist for Steemit? I'd like to read it if so.