Bitcoin holds little instrinsic value. People are speculating on what the price will be when BitCoin will hold some intrinsic value (when Amazon, Google, eBay, etc. will start accepting payment). Because the price right now is purely speculation, I would not try to conclude long term trends. BitCoin is unlike stocks or fiat because it holds little intrinsic value. Stocks and other investments other than BitCoin have a tangible value. I challenge someone to give me an intrinsic value of BitCoin. I'm also saying that BitCoin will eventually have intrinsic value when it becomes a pseudo mainstream currency
Bitcoin has more users than many national currencies. The law of
statistical mechanics economics which determines the fundamental value of a currency is
the ideal gas law Fisher's quantity theory of money, PQ=MV. Using the blockchain for January I estimated the fundamental value of bitcoin at 640 BTCUSD. The fundamental value rises on a logistic baseline, composed with the network value, which increases as the square of the number of nodes in the network. Currently speculation has driven the price below the fundamental value. After the despair phase has blown off, as a new wave of adopters come in, a new blow-off top will form, against a higher baseline. The baseline is doubling approximately every 100 days.
Stocks do not have tangible value. Bitcoin does not have tangible value. Stocks are shares in a limited liability corporation, a form of ensemble organization which dates to Norman England but did not come to the fore until enabled by double-entry accounting. Bitcoin are shares in a distributed autonomous corporation which dates to the 1996 cypherpunk mailing list but did not come to the fore until enabled by the blockchain.
Until you master the elementary aspects of Bitcoin, any predictive modeling that you do is likely to suffer from serious misconceptions and fail in dramatic ways. Even after, it does have a way of doing what it has always done, in very surprising ways.