Shutter

Shutter Network provides encrypted-mempool infrastructure that prevents MEV extraction and front-running by encrypting transactions until they are included in blocks, using threshold cryptography for decryption. It is live on Gnosis Chain, with Ethereum integration planned.

Shutter Network – Encrypted Mempool & MEV Protection

Fits with patterns

Not a substitute for

  • Post-execution privacy (transactions are visible after inclusion)
  • Cross-chain MEV protection
  • Complex intent expression (focuses on transaction-level protection)

Architecture

Shutter uses threshold encryption: users encrypt transactions with a shared public key; a network of validators collectively decrypts them after block inclusion; searchers cannot see transaction content during the vulnerable mempool phase; ordering protection prevents front-running while maintaining transaction validity.

Enterprise demand and use cases

  • Encrypted mempool preventing MEV extraction during broadcasting
  • Threshold decryption with no single point of failure
  • Censorship resistance through distributed key management

Technical details

  • Networks: live on Gnosis Chain; Ethereum integration planned
  • Compatibility: works with standard Ethereum transactions
  • Validator requirements: requires a network of threshold key holders
  • Developer experience: minimal changes to existing dApp integration

Strengths

  • Proven solution with mainnet deployment
  • Strong cryptographic foundations (threshold encryption)
  • Minimal impact on existing Ethereum workflows
  • Effective MEV prevention during the critical mempool phase

Risks and open questions

  • Limited to supported networks (Gnosis Chain currently)
  • Adds latency due to the threshold decryption process
  • Requires coordination among threshold key holders
  • No protection against MEV after transaction execution

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