How it works

Watch one transfer go dark.

You send 1,500 $SHROUD to a friend. Here's every step, and who can see what.

  1. 01Sign once
  2. 02Prove it in your browser
  3. 03A relayer posts it
  4. 04The vault records a sealed note
  5. 05Your friend opens it

Your wallet signs one message. Your browser turns it into two private keys: one to see your notes, one to spend them. The signature never leaves your device.


          
Your device builds a zero-knowledge proof: "I own notes in the vault worth at least 1,500, and nobody spent them before." It proves it without saying which notes.

        

        

          
YouRelayerSolana

          
A relayer submits the transaction and pays the SOL fee. It's paid back in $SHROUD from your notes, so your wallet address never appears on-chain.

        

        

          
          
The vault checks the proof, marks the old notes as spent with one-way tags, and adds two new sealed notes to its tree: one for your friend, one for your change.

        

        

          
sealed note1,500.00 $SHROUD

          
Your friend's app scans new notes with their viewing key. Only their key decrypts this one. To everyone else it stays a blacked-out line.

        

      

      

        
The chain sees
    
        
    You see
      
      
      
    
      
    
      
  
      

      NextYield →Every trade pays the private holders.