What is Murk?
Murk is a privacy layer for Solana. It lets you hold and move value without broadcasting your balance and activity to the whole world.
The problem
Solana, like most blockchains, is fully public. Anyone with your address can see every token you hold, every payment you've made, and everyone you've transacted with. For payroll, trading, savings, or simply not wanting your net worth to be a public spreadsheet, that's a problem.
How Murk solves it
Murk runs a shielded pool — a shared on-chain vault plus a Merkle tree of encrypted "notes."
- You deposit (we call it veil) a public token into the pool. This deposit is visible on-chain, like any transfer.
- Inside the pool, your funds become a private note — a cryptographic commitment that hides the amount, the token, and the owner. Only you can find and decrypt it.
- You transfer, swap, or hold privately. Each action spends old notes and creates new ones, proven correct by a zero-knowledge proof. Observers see that something happened, never what.
- When you want funds back in the open, you withdraw to any public address.
Notes are like private cash
Think of each note as a bill of private cash: it has a hidden denomination, and only the holder of the right key can spend it. Spending a note reveals a one-time nullifier (so it can't be double-spent) that is mathematically unlinkable to the note itself.
What you can do
- Send privately — pay anyone by their shielded address or normal Solana pubkey.
- Swap privately — trade one token for another through the pool.
- Hold any SPL token — onramp any token; receive by your wallet address.
- Stay compliant — export a read-only viewing key for auditors without giving up spend control.
- Switch modes — flip between a public wallet view and your private one anytime.
What Murk is not
- It is not custodial — we never hold your funds.
- It is not a bridge or a chain — it runs entirely on Solana.
- It is not magic anonymity — privacy is strong but probabilistic, and depends on your own habits (see How privacy works).
Next: connect a wallet.