Imagine here is a table in SQL:
User Hash Dynamic value
A = SHA256 of (Value A, Value a) =Value a
B = SHA256 of (Value B, Value b) =Value b
'Value A' is a static value for the row, which is not fetched from any other table, but created at the time of creation of 'User A' from a smartphone app. 'Value a' is a dynamic value, which is sent from the smartphone application, every time when the hash verification is to be carried out.
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