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.