Generate a Truely Unique UUID

Watch this closely! You will never ever see this ID again at this place:

de6c3f7b-5ce9-4a93-8e18-e560412d82ebThe URI for this is: https://rfc4122v4.api.tuuid.com/de6c3f7b-5ce9-4a93-8e18-e560412d82eb

1591797 truely unique UUID's were so far generated. Potential collisions prevented: 0

What is an UUID?

What means truely unique?

Is there a warranty for this service?