Docker image ls --digests: listed digests don't match anything in DockerHub

[jhg6308 (Jim Garrison)]

Given

jhg@portal ~/omada-controller
$ docker image list --digests
REPOSITORY                  TAG        DIGEST                                                                    IMAGE ID       CREATED        SIZE
mbentley/omada-controller   5.15.8.2   sha256:176700ba5112105e4b8657e42cbd24967d37de27da5c5e2c37880f6788f5f608   1d5ba5e0ac57   6 days ago     700MB
mbentley/omada-controller   5.13       sha256:39ba193f65ebabcd404ac78cef625fb33ee4b8dea998e0e852a85af20ad734c6   7cca0a870103   5 months ago   641MB

If I browse to the corresponding DockerHub page (for, e.g. 5.15.8.2), none of the images listed match the digest in the list above.

Are these different digests?

Is it possible to search DockerHub for a specific image by sha256:digest?

[deanayalon]

Looks like it matches the index digest