One bitcoin, two bitcoin... or two bitcoins?

[aes1]

Which one is it?

Bitcoin is a curious word!

[xisnotx]

two bits of coin not two bit of coins...?...

[aes1]

Oh... googling for "bitcoin plural" took me to Wikipedia: http://en.wikipedia.org/wiki/Bitcoin

So "bitcoins" it is.

But still you apparently use phrases like "work for bitcoin", "accept bitcoin" and so on.

(Funny though, there was a donation ad in Wikipedia and it seems they don't accept bitcoin. Missed my donation there!)

[Stn]

One dollar, two dollar... or two dollars?

[isnoop]

Yeah, makes sense

Dollar -> Dollars
Coin -> Coins
Bit -> Bits
Bitcoin -> Bitcoins

[dyseac]

Bit -> Bits
Bitcoin -> Bitcoins

Not BitsCoin ? coz thats what your logic says...

[AndrH]

Bit -> Bits
Bitcoin -> Bitcoins

+100500!!!

[evergreens]

Bitcoins

[cassini]

There is only one answer, and it comes in three flavours:

a) the name of a currency - singular:
"The Dollar against the Bitcoin went down by 10 percent."
"The Euro against the Bitcoin went down by 10 percent."
"The Bitcoin against the Pound went up by 10 percent."

b) means of payment - it depends:
"I spent my last ten dollars on ..."
"Soon crossing 17 Trillion Dollars in Federal Debt."
But:
"I lost 50 Euro."
"This cost me ten quid."

c) amount in spoken language - singular:
"... costs five dollar fifty"
"... costs five euro fifty"
"... costs five bitcoin fifty" 

[rayvellest]

Surely "bitcoins", with the added "s", is the appropriate spelling for the plural form of "bitcoin".

[isnoop]

Bit -> Bits
Bitcoin -> Bitcoins

Not BitsCoin ? coz thats what your logic says...

You're reading the pattern wrong.  The 's' goes on the end, just as with most other compound pluralization.

Rugrat isn't pluralized into rugsrat simply because it's compound. It's rugrats.

[Mike Christ]

Bitcoin: Software
Bitcoin: Protocol
bitcoin/s: Currency (BTC)

I have seven bitcoins.  I love my Bitcoin.