I do not think the Bitcoin was pumped during 30/9. Bitcoin was rebounding after its dip. Honestly I think right after Bitcoin recovers from those FUD, it is now back on track for being bullish and uptrend market. I think we will be seeing $5k soon. With these two compay (AMAZON and GOOGLE) getting involved with Bitcoin.
The news about Amazon was a baseless rumour and it was quickly discounted. I don't think that is the reason for the market rising now. In any case, we have put Jamie Dimon's comments and China's actions behind us for now.