Horacio Melendez Vidal (November 2017) 7. dan tkd
– Evaluated as 免許 Menkyo 5. dan by Technical WPMAF     (December 2011)
– President Federation Mexicana de Acudo ryu (2011)

– Renshi of the Acudo ryu system (May 2015)

• 1. dan May 2010 Examined by Grand Master Volden, 7. dan (Mexico city, Mexico)
• 2. dan December 2010 Examined by GM Volden, 7. dan (Mexico city, Mexico)
• 3. dan December 2011 by GM Volden, 7. dan (Queretaro,Mexico)
• 4. dan February 2013 by GM Volden, 7. dan (Queretaro, Mexico)
• 5. dan May 2015 by Doshu Volden, 8. dan (DF, Mexico)
• 6. dan November 2017 by Doshu Volden, 8. dan (Queretaro, Mexico)