i don't understand why there is an inflation rate when btc is a deflation coin..
Because people who say it is deflationary mean it is after around the year 2140 but conveniently leave that out to try to confuse people - or are uninformed.
so, right now, btc have an inflation rate? where can i find info of its value?
you can calculate it from the following facts, which can be freely found online
1) Current amount of bitcoins in circulation (total number of bitcoins mined minus the known lost bitcoins)
2) block reward (right now 25 bitcoin per 10 minutes, so 2.5 per minute).
With this you can calculate how much inflation per week/month/year
The inflation is now fairly high (about 10% or so) but will soon be lowered to 5% or so around 2016. It will then gradually drop to 4% and at the halving after that drop to about 2% (in 2018/2019) after that it will decrease even lower and by about 2020 the inflation will be much less than 1%, at which point it may be considered pretty much irrelevant.
thx for the info.
Just a question to realize if i've understood right: inflation will go down because in the next years demand will be more than supply?
The inflation (monetary base inflation) is the new money created compared to the money there already is.
So, if there is 1 bitcoin, and i mine more bitcoin, that's an inflation of 100%. But if i mine 1 bitcoin while there are 1000 bitcoin, that's an inflation of 0.1%
Right now, there are 13,276,000 bitcoins mined (
https://blockchain.info/charts/total-bitcoins) and there are about 25 bitcoins mined every 10 minutes (slightly faster, due to difficulty lagg).
That means, every year (a year has 525949 minutes, so 52594.9 times 10 minutes) 25*52594.9 = 1,314,872.5 bitcoin are mined (at least until block reward halves)
That means, the next year, inflation is 1,314,872.5/13,276,000 which is roughly 10% (9,9%)
The year after that, there will still be 1,314,872.5 coins mined (assuming difficulty has not readjusted by the end of next year) but the amount of coins mined will be 13,276,000 + 1,314,872.5 = 14590872.5 so inflation will be 1,314,872.5/14,590,872.5 = 9% This is a gradual decrease of inflation that happens constantly.
the year after that difficulty will likely have been readjusted, so the amount of coins mined per year will be about 657,436.25 (because 12.5 coins per 10 minutes) and the amount of bitcoins will be about 15,905,745 when that happens. So inflation will suddenly drop in half (this happens about every 2 years, on top of the gradual decrease in inflation). 657,436.25/15,905,745 = 4.1%
So in just about 2 years, inflation would be lowered from 9.9% to 4.1% and the two years after that it's not even 2% anymore. That's even faster than i guestimated in the previous post.