🔐 Private Messages with Public Trust

In Harpo, sending a private message doesn’t mean sacrificing trust.
Every message is accompanied by a ZKP (Zero-Knowledge Proof) that guarantees:
✅ The message was genuinely sent by the sender
✅ The content received by the recipient is identical to the copy received by the authority
✅ No sensitive information is revealed beyond what’s strictly necessary

🕵️‍♀️ This ensures non-repudiation — the sender can’t deny having sent it.
It also enables selective transparency — the authority is in copy, without compromising privacy between participants.

📦 How does it work in Harpo?
📨 The user creates a PrivateMessage, containing the message and obfuscated identity.
🧠 A ZKP is generated to prove the content sent to the recipient matches the one sent to the authority.
✅ The proof is verified on-chain, and the message is stored for future audit.

All of this happens without exposing who talked to whom, or the actual content — only proving that valid communication occurred.

🛡️ Why is this useful?
In solutions like:

Private financial transactions
Regulatory audit trails
Enterprise messaging with legal compliance
…it’s essential to have a channel that’s private, yet trustworthy and auditable

💬 Have you considered how to combine privacy + selective transparency in your systems?

To see more 👉click here👈