Maybe this article could help us to have some idea about 2019 prediction...
5 Crypto Predictions for 2019 - Invest In Blockchain
https://www.investinblockchain.com › ...
1. The BTC Bear Market is Over, No New Highs and No New Lows
I believe either the bottom of the bear market has already happened, or we are very close to it.
Bitcoin has dropped approximately 84% (depending on which exchange you check) from its high set in December 2017. If you compare the bear market of 2013/14, we are extremely close to the same pace of decline in the time period given...............
2. Some Altcoins Reach and Exceed Their Previous All-Time Highs (in BTC)
In the early days of crypto, Bitcoin market dominance was above 90%, with no other coins really adding any new use cases.......................
3. Regulators Target Some Big-Name ICOs, Refunding Investors
As I suggested in my “ICO apocalypse” article, regulators are catching up with the slew of ICO projects launched in recent times. The SEC has warned about participants running ICOs in the past and are now threatening to unwind many of them...............
4. Ethereum Goes Proof-of-Stake
Vitalik Buterin has made no secret he is not a fan of Proof-of-Work...............
5. 51% Attacks Increase on “Shared Hashing Algorithm” Coins
When Ethereum transitions to Proof-of-Stake, a lot of hashing power will be freed up from rental services such as nicehash. This will make the cost of attacking coins with shared algorithms much easier and potentially cheaper................