bitcoin               
                                        
                                          
 bitcoin is  a  crypto coin, crypto  here 
 meaning "hidden", because this money  is 
 invisible, intangible (yet still real)!  
 this is  a symptom  of it only living on 
 the internet - in fact,  if you were  to 
 remove a bitcoin  from the mainframe, it 
     would immediately die and become     
                worthless.                
                                          
 it works like  this:  if  you  make your 
 computer  create  a  lot of  heat,  it's 
 rewarded  with bitcoin,  as  a  token of 
       gratitude from time's arrow.       
                                          
 then every other computer has  to sign a 
 document  stating that  those coins  are 
 actually yours.  you can then send  them 
 to others,  generating  a  new  document 
           for everyone to sign.          
                                          
 and because you're knee  deep  now,  you 
 have   to  sign   a  lot   of  documents 
 yourself,  and keep track  of who signed 
 what,  and  look for forged  signatures, 
 and  probably  forge a  few  yourself... 
                                          
 also,  in  the  end  it   doesn't  work.