[FEATURE REQUEST] BLOB validation & verification

[teran]

What is your use case?
Sometimes (like after migration to another service provider) it’s useful to run blob validation to ensure all the BLOBs are feeling fine and not corrupted or missed

Is your feature request related to a problem? Please describe.
no actual problem

Describe the solution you'd like
It looks like manager and cli could interact on that field and check the data

Describe alternatives you've considered
up to discuss

Additional context
aws library allows to specify SHA256 checksum on upload link generation. Probably this could help somehow so it’s needed to check what exactly it’s for before implementing custom tool.