Internal read operation processing of kopia

Hello, I am very interested in the internal processing of kopia.
I want to know whether the recipe in the kopia repository stores block fingerprints ( Is this block fingerprint the Content ID you described? ), and what is the read operation process of kopia? is it one of the two photos?

1屏幕截图 2023-02-01 173416
I would appreciate it if you reply!