vs. Privacy Cash
How ZORB Cash compares to Privacy Cash
ZORB Cash vs. Privacy Cash
TL;DR: ZORB Cash is 100x cheaper, 10x more private, and earns you yield. Privacy Cash pioneered Solana privacy—we built on that foundation.
The Short Version
Both protocols let you send tokens privately on Solana. The difference is what happens while your funds are shielded.
| ZORB Cash | Privacy Cash | |
|---|---|---|
| Cost | Old data gets cleaned up | Stores everything forever |
| Privacy | Share view-only access safely | One key controls everything |
| Yield | Earn while shielded | Funds sit idle |
100x Cheaper
Privacy protocols need to remember every transaction to prevent double-spending. Most protocols store this data forever, which gets expensive.
ZORB Cash cleans up old data automatically. After 30 epochs (~2.5 hours), expired records can be closed and their rent reclaimed. Anyone can do this cleanup and keep the reclaimed SOL.
Result: The protocol stays lean instead of accumulating unbounded storage costs.
→ Learn how epoch-based cleanup works
10x More Private
Here's the problem with most privacy wallets: if you ever need to prove your transaction history—for taxes, a loan, or an audit—you have to share your spending key. Anyone with that key can take your funds.
ZORB Cash separates these capabilities:
- Spending key — can move your money
- Viewing key — can only see your money
You can share your viewing key with an accountant, auditor, or institution. They get full visibility into your transactions but cannot spend anything.
This also means multiple addresses from the same wallet are cryptographically unlinkable. No one can tell they belong to you without your viewing key.
→ Learn about the key hierarchy
Earn While Private
With Privacy Cash, your tokens sit idle. Deposit 100 SOL, withdraw 100 SOL.
With ZORB Cash, your shielded balance earns yield automatically. Deposit 100 SOL, withdraw 100 SOL plus rewards.
You shouldn't have to choose between privacy and productive capital.
→ Learn how shielded yield works
When to Use Each
Privacy Cash is simpler and battle-tested. If you need basic privacy for occasional transfers, it works.
ZORB Cash is built for users who:
- Want their private funds to earn yield
- Need to prove compliance without risking theft
- Care about long-term protocol sustainability (cost efficiency)
See Also
- ZORB Cash Overview — Full protocol documentation
- Circuit Design — How ZK proofs work under the hood
- vs. Umbra Privacy — Another comparison