[Rmilb]

If you are certain it will collapse you can make a lot of money shorting it. If you are 100% sure, there is no downside.

[bwanab]

Maybe you've heard the old finance saying: "Markets can stay irrational longer than you can stay solvent".

[neilwilson]

Generally the problem with shorting is that the shorts are time limited - because it is a derivative bet, not a proper loan.

And following Keynes the market can stay irrational longer than you can stay solvent.

[soneca]

What financial mechanisms exist to short Bitcoin?

[mancerayder]

Here's an idea. Ethereum smart contracts to short bitcoin. You borrow my BTC for 30 days, with a 5% fee. Someone could make a killing off of that idea.

[chrdlu]

https://medium.com/dydxderivatives/introducing-dydx-2d0f0f32...

Note: I'm not affiliated with that project, but I did see them present yesterday at Token Summit and it looked very interesting!

[colecut]

This is more of a general purpose app, but would work.

https://gofreakingdoit.com/

[buckthundaz]

Possibly at bitmex: https://www.bitmex.com/

CBOE and CME to offer the next couple weeks.

[beastlyhotfiyah]

I used to short/long bitcoin/eth on GDAX, you have to register as a business and turn on Margin Trading

[alexanat]

CME Bitcoin futures

[nodesocket]

Is there even a US based legit platform to short Bitcoin? If Coinbase was serious about having a true market they would allow you to short Bitcoin as well as buy.

[beastlyhotfiyah]

Coinbase does have a market tho, it's called GDAX, you use your coinbase login and it has margin trading on it. Once I found out about GDAX I never used coinbase again for trading currencies because GDAX has no transaction fees if you are creating the transaction ie. setting up the buy/sell limits

[alexanat]

CME is offering bitcoin futures starting next week.

Interestingly enough, S. Korea has declared bitcoin futures illegal today and S. Korea is the leading buyer of BTC.

Should be a good time.