The history books will distinguish a time before the invention of #Bitcoin and a time after. Prepare yourself accordingly. 

 My second child was born in AB1 

 AB1? 

 1 AB  1 after bitcoin like AD and BC 

 Love it! 

 BB & AB? 
Or….BS & AS 

 From BC to BTC. 

 BB:AB 2008:NOW(Block height)