thanks for your help so far.

I know that adresses cannot be directly linked to persons and that someone can have multiple adresses. But, if I understand correctly it is possible to see how many Bitcoins were held by any adress at certain points in time, also in the past?

For my master's thesis I will research bitcoin. I plan to analyze the distribution of wealth (bitcoins) among existing adresses. I think it is interesting to see whether the bitcoin economy has a different of similar distribution from the fiat money economy, where 1% of people owns 99% of wealth (power law, long tail).

However, I need some help with getting the data, for example from http://blockexplorer.com/. Who can help me with this?

Hello! Joined this forum as I am starting to do research after bitcoin.