# Encrypt data
## Abstract
When you use Public Blockchain, what you put in Blockchain is public. UPROOFS to guarantee data writes in Blockchain:
* UUID of the Proofs (that helps to recover the public page);
* HASH of the data packet (that helps to verify data timestamped).
Through Explorer someone can use the Smart Contract address to see all the data exchange through UPROOF. Here a screenshot of the list of Transaction made through UPROOFS:
Clicking on one transaction User can see the Transaction Details, here a screenshot:
From here a User can use UUID to see proofs of other users. This is not a problem if data is public...
If you use UPROOFS to timestamp private data you can use Encrypt Functionalities.
## 🔐 How to Encrypt a Proof
You can insert password in your object to encrypt the proof
#### ENDPOINT
```
POST "/proofs"
```
#### BODY
```javascript
{
"assetId": "fe602d7f-b807-4d65-bc29-23b4cea58bb7",
"password": "12345",
"data": {
"timestamp": "those",
"data": "4ever"
}
}
```
## Verify an Encrypted Proof
Here the Encrypted Proof if the user cannot provide the password:
If the user provide the password:
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