i am still not convinced about this news saying this single person crashed the market because a lot of things don't make sense to me.
first of all his purpose was not to crash the market because he did not benefit from any kind of crash.
think about it, the news tells us he was selling to have money to pay others.... in other words he didn't want the price to drop so he can buy more bitcoin, he wanted the price to go up and stay up so he could get more money out. someone with this motivation doesn't crash the market and will do everything in his power to prevent that as a matter of fact.
secondly, i say unless he was selling on all exchanges he couldn't have caused any kind of crash whatsoever because simply put if you dump on one exchange price may go down there but it won't follow on all exchanges. and as i explained above you don't just go around and fuck the market up to cause yourself a lot of loss.
third, the news also told us he started selling months ago. and if i am not mistaken when i checked the date versus the price, bitcoin price was around $4000 when the news said he started selling. this means price was $4000 he sold, it went to $5000 then $6000 and so on and he was selling, it went above $10000 he was selling, it went to $20000 and he was selling,... so are we ignoring all these sales during the biggest rise of last year and still say he caused the crash?
and finally people who want to sell a lot of bitcoin and get the money while not paying taxes and get stuck in exchanges and pay huge ridiculous fees, and a lot of headaches, they don't use exchanges. they go elsewhere and make their trades behind closed doors and when you trade anywhere but exchanges you don't affect the price at all.
You must be new to government crooks. These guys are bureocrats, they get hired to do a job and they get it done. In this case, the job was "sell BTC to pay investors". I wouldn't be surprised the guy didn't do any research, so just googled "how to sell bitcoin" then joined Kraken and started dumping in batches. If he was dumping the price in purpose or not we don't know, but what we do know is this:
https://www.zerohedge.com/news/2018-03-07/bitcoins-tokyo-whale-sells-400m-bitcoin-bitcoin-cashLook at the graph. He sold 18000 at the dip, he was either panic selling or dumping in purpose.
And yes, he could benefit from crashing the market. We don't know if a government paid him to purposely crash the market.
And yes, dumping on a single exchange an huge amount of coins can trigger panic selling. Kraken is big enough to influence the rest of the markets.
lets assume you are right, answer me this then. what did the government gain by crashing the market? bitcoin is still alive, it is still being traded, it is still being accepted wherever it has been accepted before and people are still buying and using it! so what changed apart from price going down and some weak hands exiting?
as for that graph the numbers may seem high (2000, 6000,...) but they are not big in comparison.
here are the volumes on each date from BitStamp alone:
date: MtGox coins : Bitstamp vol
2017-12-18: 2000 : 14597
2017-12-22: 6000 : 48603
2018-01-17: 8000 : 38975
2018-01-31: 6000 : 12711
2018-02-05: 6000 : 46422
and as i said above it is still a matter of dumping on ALL exchanges if you want to crash the market. if you sell a lot on 1 exchange, price will crash there and it will not have any significant effect on the price in general. and from what i understood all the "analysis" points to selling on one exchange.