anchor.diff:  --------------+------------------+-----------
    expiration   | bigint           | 
    term         | bigint           | 
  - price        | private.faircoin | 
  + price        | faircoin         |         
    fairian_name | name             | 
   --------------------------------------------
   
  
positive.code:  supplier        | name                  | 
   work_place      | name                  | 
   active          | boolean               | 
   skill_name      | private.skill_type    | 
  --------------------------------------------
  
  and sees eight columns. The contract_number, issue_date, and active
  
negative.code:  fairian_name  | name                  |
   serial_number | character varying(14) |
   expiration    | bigint                |
   price         | faircoin              |
  --------------------------------------------
  
  As in past examples, it is not necessary to specify the 
  