How can I share private client information among users in different chains without storing it to state?

Miscellaneous
1

Hey guys
What is the best way to share sensitive information among two different chains without committing it to the state?

For example I got used A in chain A to send his phone number to user B in chain B. The user A and user B are clients.i would not want this phone number to be commited. Nor would I want any intermediary node to look at it.

The data must be sent to user B in a p2p way.

2

I think the NYM Project might know the answer to this.

3

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