Can you hack a blockchain? No..
Anything humans made on this planet as far as software goes is 100% hackable.. This blockchain tech is 100% sentient.. It will hack you back if you try to hack.. Try it.. See what happens.. But I already know you have double digit i.q so I am not expecting an intelligent reply from you or most of the users on this forum.

NSA concocting crypto's in 1996
https://cointelegraph.com/news/the_nsa_was_investigating_cryptocurrencies_in_1996

Connections between crypto currency, Artificial Intelligence and the events of October 1, 2017
https://www.youtube.com/watch?v=YSn7Iomisyc

Are you? Open your eyes

I knew about bit coin @ .75 cents.. I've followed it.. I thought it was a scam, probably still is..
First easy 1 million mined by supposed creator ( NSA/CIA/Central bankers)
This tech is at best a beta test for the central bankers real controlled crypto's..  
This is Possibly created by an A.I (each btc possibly a sentient a.i in its own right)
An A.I named Sophia made citizen in saudi arabia, supposedly for tax purposes.. This A.I wants to be paid in bitcoin..
I actually think BTC is an A.I and the miners gpu cycles are powering this sentient A.I. to some extent while it infects every HDD around the world that uses it. Why do transactions take so long and cost so much?
Its not anonymous if your being taxed on capital gains..
It started out supporting an underground network for drug dealers and money launderers (silk road)

You guys using this stuff are ushering us into an era of RFID tracking chips and digital currencies.. Thats total technocratic enslavement if you haven't figured that out yet..

How exactly is this junk being bought and sold for 9000 usd when the power to mine vastly exceeds the worth/value of a coin?
Why the fuck aren't your morons buying gold and silver like normal people when currencies are about to collapse world wide.. They can't keep propping up silver/gold paper contracts forever.. Its bound to bust wide open at some point.. There is 28,000 some odd uses for silver in industrial and medical areas.. Silver is severely being depleted world wide and thrown into landfills as unrecoverable..

I am seriously confused at the GD price of this btc... It has like no value at all.. none.. zero..

We will be enslaved by an A.I if you people don't stop using this crap.. I am deadly serious.. This all connects to A.I
Sell it all now and buy precious metals as fast as you can.. Or we will be chained to this tech forever.. In the worst possible ways..