Could this pump have been caused by westerners trading on Huobi, who want to get their money out of the exchange by buying btc and transferring it to Stamp or whatever?
This is something I've been wondering for some time. Even if it is chinese, the logical reaction to a pending ban should be to _buy_ asap and transfer to a safe wallet.
I was thinking the same. The best way to avoid future problems would be to buy bitcoins a get out of the exchange fast.