How Shutter Network and MetaMask Smart Transactions differ on type, protection, rebates and what they’re built for.
| Shutter Network | MetaMask Smart Transactions | |
|---|---|---|
| Type | Encrypted mempool | Wallet feature |
| How it works | Transactions are encrypted with threshold cryptography and only decrypted after they’re committed to a block, hiding intent from searchers entirely. Bringing encrypted txs to Ethereum PBS with Primev. | Submits your tx to a private “virtual mempool” and auctions it to trusted builders who are financially penalized if they don’t execute at the quoted price. It stays private until confirmed. |
| Protects against | Frontrunning & censorship via threshold encryption | Frontrunning + failed transactions (99.9% success rate) |
| Rebates | N/A — prevention by encryption | No direct rebate — back-run value funds the free service |
| Chains | Ethereum (PBS-bound), Gnosis Chain | Ethereum, Linea, Base, Arbitrum, BNB Chain |
| Setup | Used via integrating apps / keypers | Toggle on in MetaMask settings |
| Best for | Apps that need intent-hiding + censorship resistance | MetaMask users who want zero setup |
Pick Shutter Network for apps that need intent-hiding + censorship resistance; pick MetaMask Smart Transactions for metamask users who want zero setup.