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.