Crossword Genius

Hint of change in cryptocurrency? (7)

Ross

I believe the answer is:

bitcoin

I'm a little stuck... Click here to teach me more about this clue!

'cryptocurrency?' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'hint of change' is the wordplay.
'hint of' becomes 'bit' (I can't justify this - if you can you should give a lot more credence to this answer).
'change' becomes 'coin' (I've seen this in another clue).
'bit'+'coin'='BITCOIN'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for bitcoin that I've seen before include "new money" , "Digital currency" .)

I've seen this clue in The Independent.
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