How can you tell if a QR code is dynamic?

Scan it and look at the URL that appears before you tap: a dynamic QR code shows a short redirect link (something like qrhubly.com/r/abc123, bit.ly/…, or a provider's short domain) rather than the final destination. A static code shows the real destination URL directly, because that's what is physically encoded in the pattern.

Most phone cameras display the encoded URL as a notification banner before opening it, which makes this easy to check. There's no visual difference in the code itself — dynamic and static codes look identical as patterns. The 'dynamic' part lives entirely in that middle redirect, which is what lets the owner change the destination and count scans without touching the printed code.