However the purpose was to dig out the black money that is the one which was in cash form.
You are imagining it right that it is could time to inject the bitcoin into the system, but it seems impossible to do avid the fear amongst everyone to replace the notes. Everyone would be in rush to replace the same etc.
Gives good reason to see bitcoins potential during such incidences.
What is the effect? No black money seized, only rumours were spread around that the new money comes with chip and impossible to accumulate. When opportunity is availed it is good to use it. Even now the negative impact can be felt in the economy.