But how do you define a blockchain? Is it a digital ledger secured by Proof of Work, completely permissionless and decentralized? Or is it something else like what the ICOs are doing? There is a big difference.
We must first know what a blockchain really is to predict its future, because in some definitions, anything can be a blockchain.
I've done quite a bit of digging into what a blockchain is. After looking at many respectable sources including Andreas Antonopoulis, I've come up with a pretty solid definition linked below:
https://decryptionary.com/dictionary/blockchain/This comes from my passion project, Decryptionary. It has 200+ definitions, simple visual walkthroughs and word lists by subject. I'd appreciate honest feedback from the Bitcoin Talk group.