Opus number of Pachelbel's Canon & year of composure for Paganini's Caprices?

Question

(1) What is the opus number of Pachelbel's Canon in D?

(2) In what year(s) were Paganini's Caprices composed?

Thank you in advance for any responses.

Answer 1

1.) There is no opus number.

The full German title:

Kanon und Gigue in D-Dur für drei Violinen und Basso Continuo or
Canon and Gigue in D major for three Violins with Bass Acompanyment

2.) 1817