Firstly:
There was no "intention to creation an instamine coin" - using statistics as a basis *after the fact* to try to justify something is either foolish or idiotic. Plenty of inferences can be made in practically every statistical analysis of any set of data ever.
The fact that 20% of the *current* coins were mined in the period is pointless. Currently vertcoin has 100% of its coins mined in the current period - the current period here being about 4 months just over - an insignificant period of time for you to draw any conclusions from.
Further, those instamines went to how many addresses, and how many of these transactions were then traded and exchanged while the value of vertcoin was significantly smaller than it is now?
I presume that prior to creating this thread, you have meticulously analysed the blockchain, located all of the addresses that these coins went to, and then calculated the total trading and have come to the conclusion that None of these coins have been traded for, and that all coins were infact hoarded by one core individual? (Or perhaps you are accusing the devs of hoarding here, personally I wish they did, Vertcoin is amazing at the stage it currently is, but nope, I'm pretty sure that much like Bitcoin most of the very early adopters traded their coin away before it became anything of significant worth).
This is why I am calling this FUD, as its a partial story, with a nice looking graph.
Lets see the figures, graphs and proof first - that one or two people mined and currently hold this amount.
You may want to use this for reference:
bitinfocharts.com/top-100-richest-vertcoin-addresses.html
The top few addresses afaik have accumulated their coins more recently.
Yes, you can design a coin to be mined fast at the beginning. So you can indeed create an instamine. You can also prevent against it. They clearly did not prevent against it. I think that warrants a questioning of their motives.
Since it is only wise to hold large amounts of coin in multiple wallets, I wouldn't try to prove it in the way you suggest.
But you are correct in that I haven't done hours and hours of research against Vertcoin. I don't care that much.