Use cases of ZKP (Zero Knowledge Proof) to the protocol

[criadoperez]

Opening this discussion to debate possible uses of ZKP (Zero Knowledge Proof) on the protocol. I'll start with a first one

Secure File Linking with ZKP

If a user has file with private and public data, he will split the file in two files:

1. A public file published on IPFS
2. A private file stored only by himself.

The public file will contain the CID of the private file and viceversa., so there are linked together and any modification of the content is either file will break the link.

Proof Generation

User x can generate a ZKP to confirm the following statements:

• User x possesses a private file.
• This private file is an XML file that adheres to the DDEX standard.
• The private file includes the CID of the public file in a specific field.
• The public file includes the CID of the private file in a specific field.
• A specific field in the private file meets a certain condition (e.g., contains a certain string, or a value within a specified range).

User x will have to list out the fields

[criadoperez]

Update: The public file will also list the fields that private file has.

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