Certificates of authenticity

Certificates of authenticity must be signed by all artists involved.

Minimum information includes:

• Artist's name and surname
  
• Title of print
  
• Dates — all that apply: date(s) of collaboration, date the bon á tirer approved, date(s) printed, date signed (if significant because significantly different from the printing date), date of official release or publication
  
• Medium and/or technique — it is important to be specific
  
• Paper or support (type, color, manufacturer, etc.)
  
• Size: dimensions of image and dimensions of sheet or support
  
• Signature; signature description if different from full name
  
• Master printer: specify collaboration for proofs, editioning
• Place printed (workshop)
• Publisher
• Edition size and format of numbering
• Proofs (total number: even if you don't give any additional info about the proofs, all proofs together should NEVER number more than 10% of the edition)
• Matrix destroyed
• Additional / optional information:
  • Addresses, biographical info (place & date of birth)
  • Proofs: type and number of each, disposition
  • Colors and individual runs; process or procedure notes