In what exchange I can buy ebtc?
I think even without a pump, eBTC's value will naturally grow with time.

This is what I believe too.
You can buy on HitBTC, EtherDelta, or on Stocks.Exchange. Most of the volume goes through HitBTC.
it is good news that ebtc is getting more and more exchanges so the price is slightly better and increase.
I am looking forward to that ebtc will increase