# What is publicly on-chain with Zaiffer?

Zaiffer offers confidential tokens designed to provide account-based privacy, similar in spirit to how a private bank account protects sensitive information. The concept can be understood through the following analogy:

* **Public Information (Visible):** Your account number (wallet address) is public, and the fact that a transfer was made (transaction existence) is visible.
* **Confidential Information (Encrypted):** Your balance and transfer amounts are kept confidential (encrypted).

While Zaïffer encrypts all financial data (balances and amounts), several metadata elements remain public, as required by the underlying Ethereum network:

1. **Addresses (Sender and Recipient):** The sender and recipient addresses are always public. A block explorer will show: *Visible: "0x123...abc sent to 0x456...def."* This is true for both regular and confidential tokens.
2. **Transaction Existence:** The fact that a transaction occurred is public. Observers can see, for example, that "Alice interacted with the cUSDC contract at a specific time."
3. **Token Type:** The type of confidential token being used is public. Anyone can see if you are transacting in cUSDC, cETH, or cWBTC.
4. **Timing and Frequency:** When transactions happen, and the rate at which you transact is public, which allows for the observation of behavioural patterns.
5. **Smart Contract Interactions:** Which smart contracts you engage with is public. If you use a confidential lending protocol, observers can see that you interacted with it, though they will not know the amounts involved.

Confidential tokens enable private financial operations across various scenarios.


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