A Certificate Of Capture
A Certificate of Capture is a quest reward item for completing the Pursuit quest given out by Lyla the Researcher. It first appeared with Publish 57 and was only available for seven weeks. It grants the character the reward title of "Slime Hunter" when used. However, only characters who have completed the quest can use the certificate.
While the quest is first obtained from Lyla the Researcher, it is Iakas the Zoologist who awards the certificate as a token of his gratitude in return for bringing him three specimen basins that have been filled with slime from Acid Slimes.
The title does not appear in the character's Paperdoll, but rather as reward title when the character is targetted in a similar fashion to a Cooperative Collections reward title. It can also be set to display or be hidden using a Contextual Menu by right-clicking a character.