You can also use subresource integrity.

That also isn't true, because you have things like child discounts or 'kids eat free', under 13 matinee ticket pricing, etc.

I honestly don't see why this is a problem given how many business have senior/children discounts and all. How are these things materially different. I guess this will be appealed.

To clarify the argument (without endorsing this position). It would be like you created an internet connected IOT weather station that because it was unsecured got hijacked to be included in a DDoS swarm.

The problem with poor IoT security is that, even if the device is useful for nothing else to the hacker, if it has a network stack and a connection it can DDoS someone else and there are millions of these devices. If this guy can get in and brick it, than someone else can get in and use it to DDoS

Coinbase isn't an exchange, it is a retail bitcoin dealer. They do run an exchange call GDAX, if you want spot pricing and instantaneous trading you use GDAX.

Block chain transactions only occur during deposit or withdrawal of BTC from the exchange. Trading on the exchange never goes to the block chain, and the exchange doesn't take sides in the trades so volatility is no risk.

Every futures contract has a long and short side. There are only two ways to acquire a future position, either you buy someone's obligation or a new contract is created when someone takes the opposite side of your position. For every party that is long, there is a party on the opposite side that is short. Much different from trading equities.

These are cash settled futures on BTC (a financial derivative) as such no BTC is actually changing hands.

Furthermore, on actual BTC exchanges trades are done off block chain. Your BTC ownership only recorded to the blockchain once you withdraw it from the exchange.

If you take a short position on a physically settled future for a product you do not produce (or haven't yet), that is essentially a naked short. Speculators do it all the time. It is no different than selling a call option, when you don't have the underlying, with the difference being an option may expire worthless, but a future contract always settles.

Supposedly GDAX only holds 2% of the float in hot wallets, the rest is in cold storage. Every bitcoin traded on the exchange can be withdrawn though, it would just take some time to bring wallets online if enough people wanted to mass withdraw. While they are in the exchange, trades just become notations on an asset ledger for who owns what. When you withdraw to you own wallet is when your actual ownership gets recorded to the block chain.

The market can stay irrational longer than you can stay solvent. Again it is easier to say it 'will' crash, more difficult to say 'when' or to what value.

Predicting it will crash is axiomatic, it has no usefulness as a thesis.

There is $1.3MM in buyer liquidity in the top $200 of the order book right now on GDAX and that is one exchange.

Translating the above, you could put a market order to sell $1.3MM all in one go and it would only move the market ~$200 down from where it is now.

Exchange transactions occur off chain, and are usually expressed as basis points of value. GDAX for instances charges a tx fee of 25 bp for liquidity takers, but is free for liquidity makers.

Exchange transactions occur off chain. Only when you take BTC off the exchange does go to the block chain for recording.

Exchange trades generally happen off chain so there are only commissions to worry about (25 bp on GDAX for takers). If you want to withdraw BTC to a private wallet, yes that will have transaction costs. Moving USD via ACH to and from banks is free.