Its due to the IRS ruling.
We have to say no to regulation. Regulation is bad.
First let me make clear that the ruling/law it is illegal, retroactive laws are not legal.
The law is a burden on everyone that deals with bitcoins in the USA.
Now under the law miners will have to track every time they get bitcoin and the corresponding market rate, the problem is that it creates a huge burden on miners trying to comply, not only a burden but the so called law it is impossible to comply with.
here is an example by the law is nonsense for a miner:
btc btc dollar value
time 1 receive 0.3 100
time 2 receive .4 200
time 3 .1 500
time 4 .4 400
so now you have 1.2 btc, in the wallet it is treated as 1.2 with inputs from many other smaller portions making the total 1.2
so lets say you spend 0.5 coins, now what is the dollar of the purchase of that .5 btc ? that is required by law.
in the wallet the protocol will make the payment and leave you with 0.7 btc but it will not determine the dollar value, in fact since most likely that 0.5 BTC will come a little from each each BTC transaction for practical purposes you can not tract the purchase value of that .5 btc unless you go to the blockchain and see how much of each bitcoin was taken from each transaction.
Now lets say you have 1000 transactions in your wallet, good luck tracking down the purchase value in dollars.
That is a huge burden, so I am certain that absolutely no one will be able to obey the rule of the so called law, it will creates a huge burden, smaller miners will ignore the law, and the large ones will be force to go to a bitcoin friendly country.
Vendors will have track purchases, and the current price of the dollar another burden.
buyers will not only lose their privacy, but will pay sales tax and property tax.
This last so called law is illegal, I personally hope that most bitcoiners challenge the law with the goal of making bitcoin free of illegal laws, and show politicians that bitcoiners stand together.
The good news is that the mining portion of the law is not enforceable, so if you agree and believe the law is legal then try to comply, and I say try because I do not think it is possible to comply.
I personally have no clue which was my first dollar purchase in 2013, or the last one, so why should we be expected with bitcoin to keep track of what we do not keep track with dollars.
Isn't ZGW (Zero Gain Wallet) a solution to this issue? ZGW is the first one and maybe there will be many more to come to overcome this 'calculation' issue. Let us not allow government to force such a mundane problem to the solution.