Quote from: Etlase2 on October 16, 2012, 06:47:11 AM

"As of October 2012 (block 203258) there have been 7,979,231 transactions, however the size of the unspent output set is less than 100MiB"

You need to back this up, because from what I recall estimates were between 70-80% of the current block chain's size, which, even today, is definitely not 100MB.

You probably recall the correct percentages (70-80%) but that's the percentage of spent outputs, which could be forgotten.

I can confirm the following around block 202287 (using my BiRD client which only keeps track of unspent transactions):

2443854 unspent transaction outputs, which is about 30% of all transactions (see 7.9M txs at block 203258)
the MySQL database containing all the necessary data to be able to spent those outputs, i.e. creating a valid (unsigned) tx, is about 316Mb in size when converted to an uncompressed CSV dump (simple text file)
compressing this CSV file yields only 110Mb of data.

You can download the client and some CSV's here.