The timestamp for BCN block 1 is very interesting: 2012-07-04 05:00:00 Note the zeros in the minutes and seconds.
The claim of "first anonymous coin" belongs to Dash before it belongs to Bytecoin.
Edit:
For comparison:
Bitcoin block 1 timestamp: 2009-01-09 02:54:25
Dash block 1 timestamp: 2014-01-19 03:54:41
DigitalNote block 1 timestamp: 2014-05-30 21:51:26
Monero block 1 timestamp: 2014-04-18 10:49:53
ShadowCash block 1 timestamp: 2014-07-19 09:06:08
When did darkcoin's masternode mixing system go online? that's the date needed in the comparison above.