Hello, Minerva!
Welcome to planDisney! We are DELIGHTED you stopped by, and we are very excited to answer your MAGICAL question!
OK...this is a really GREAT question! When my family first visited the Disneyland Resort, I was really impressed with the pavers that line the Esplanade between
Disneyland Park and Disney California Adventure Park! In doing some research, I found out Mickey Mouse started
The Walk of Magical Memories, where guests could purchase these pavers and be a part of the Disneyland Resort history. Unfortunately, the program ended in 2011, and I was not able to purchase a paver. (Enter sad face here...) HOWEVER, I am so excited you and your family were able to purchase a MAGICAL paver! (Enter VERY happy face here!)
Now, I had to do some investigative reporting to find the answer to your question. After speaking with a very helpful Cast Member, my recommendation would be to check with Guest Relations at City Hall at Disneyland Park or at The Chamber of Commerce at Disneyland California Adventure Park. A Cast Member will then help you with the next "steps" to find your commemorative brick!
If you have other questions, please do not hesitate to ask! We are here to help in any way!
Have a MAGICAL day!
Wes