Satoshi Nakamoto always referred to it as such:
However, I see the term "blockchain" used a lot anyways. Do you think we should use Satoshi's terminology to prevent confusion with Blockchain.info, who will usually just refer to themselves as Blockchain? Or am I worried about nothing?
block chain
However, I see the term "blockchain" used a lot anyways. Do you think we should use Satoshi's terminology to prevent confusion with Blockchain.info, who will usually just refer to themselves as Blockchain? Or am I worried about nothing?
From my little background in mathematics blockchain would be the highest order of appreciation.
"block chain" refers to the two english words, which would be a regular description of any chain of blocks. Since the blockchain was something new at the time it is only natural that satoshi worded it in that way.
Blockchain with a capital B even in the middle of a sentence would refer to a proper name or the name of a service.
What does that have to do with mathematics you ask? Its all linguistics! Well yes... many mathemtical theorems are named after mathmaticians. They are usually writen with a capital letter since the derive from the name of a person. Not so abelian[1] which derives from to the mathmatician Abel, but is used in lower case.
Its also less work to write blockchain
[1] http://en.wikipedia.org/wiki/Abelian
PS: I voted "who cares"