IRS - that's true. We'll probably see the big fish go first and get audited. The audits will get messy. For instance, at some point I lost (or more likely probably donated and spent without recording it) a small amount of bitcoin. And I think i've lost my earliest addresses (some of which might be in the Bitcoinica database but that is lost).
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I was watching Willy Woo saying how the NPT shows that Bitcoin is overbought. Though he is only calling for a correction down to 6k (if I recall correctly). For instance, the NVT 90 day model is calling for a $6047 bitcoin price.
https://charts.woobull.com/bitcoin-price-models/...
Fact check. A lot of new players are ignorant about the fact that you could short bitcoin fairly easily starting around Jan-March 2013 using Bitfinex (and even earlier on Bitcoinica in 2012 and even earlier in 2011 on another website that I'm forgetting). They claim that shorting is new which is blatantly wrong. Now margin-trading took some time to get up to speed, and generally wasn't that stable on Bitfinex until 2014 (swap rates still at 40% APR) or 2015 (when swap rates fell to 20%/APR, representing lower risk) - but it was doable. And was definitely doable in the 2017 bull market on many exchanges.
A related theory is that alt-coins were more useful when there was less bitcoin margin trading as one of their most important features was speculation, and speculation with higher volatility than bitcoin. I agree with this point, however as I think that the change in the ability to use margin trading with bitcoin is less than others think - I think alt coins will still have a role to play. Notably, there isn't anywhere currently that a retail US investor can do margin trading on bitcoin without violating terms of service (unless I'm mistaken).
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I'm skeptical of the Halvening. Though with a lack of fundamentals people tend to latch on to things and assign them weight they don't deserve (ex. Tone Vays thinks the Cyprus banking crisis was critical), And then they get weight because of it. So the Halvening is likely to be an event, especially if we are in a bull market. Or it might be seen as the cause of a spike in the prices even if it isn't one (some people were assigning the LTC price increase to its upcoming Halvening).