I don't dispute that there are ways to cheat. For example I sell 10,000 BTC to you at the mid price on a relatively low volume exchange at 1200 on the 4th June. I have an obvious incentive to buy some BTC on that exchange at 1200 to send up the price. Or there is inside trading. But these are special cases, not systematic problems.
Or that whale could use a portion of his coins and wealth to push the market around in a way that leads to positive buy signal after positive buy signal, which eventually ignites the market into action, thus multiplying the notional value of the whales BTC stash for whatever reason.
On the price action thread, when the whale made the 500 BTC market order that pushed Bitcoin up $30 in 10 seconds, some asked, "why did that whale do that?" Another replied; "altruism". I don't buy the altruism motive, but the market was looking bearish up until that point, after having plunged upon the temporary disappearance and withholding of a feasible USD swap rate on Bitfinex. It was speculated that some whale was on the main leveraged trading exchange and bought up all the USD swaps, and then started selling Bitcoin. Point is, these market actions were not and could not be coordinated by the masses, but by a powerful few, or even just one entity. Everyone, bull n bear alike, has noticed and remarked on the 'peculiarity' of the trading, and what are we left with? A bullish cup n handle chart formation, with the volumes beneath it in all the right proportions, right at the point where we surely would have had a strong retracement (loadsa folk were planning on cashing out at $700 range, perhaps not now). It also fits in nicely to an ascending triangle which if the text book guidelines are adhered to, should break above the $683 high on this move. Aided and abetted by some 600 BTC chunk being taken out the Ask wall by some whale on Bitstamp.
As for Alt-coins. The pump n dump activities in those markets are well known. There are individuals who are (in)famous for having perpetrated shitcoin pump n dumps.
I amn't calling this blatantly engineered ramp a pump n dump just yet, as objectives of those who are ensuring this rise stays on track may be much much higher reaching than simply to double/treble Bitcoins value and then cash in (they may want 10* it's value from the $340 low, for example).
Accumulation, Manipulation, Profit Release*. That's how 'they' work. Accept it for what it is, trade with it, not against it.
I am and have been trading with it. It has just taken a while to realise which way the wind machine has been pointed whilst I have been dicking around 'taking profits', in and out market, staring at charts, doing EW looking for RSI/OBV divergences, and running Fib retracements graphs. Had I sensed or rather accepted that 'this was it' earlier, then I would still be holding my $460 position to this very moment and would be fkn laughing (still can't complain, I have done ok up until now anyhow).