Encrypted Transaction Ordering
Encrypted Transaction Ordering is a privacy-preserving mechanism used in blockchain protocols to prevent front-running and sandwich attacks. By encrypting transaction data before it is submitted to the mempool, validators and searchers cannot see the contents of the transaction until it has been committed to a block.
This ensures that the order of execution is determined by the protocol consensus rather than by participants attempting to extract value from pending trades. It effectively decouples the transaction submission from the visibility of its details, protecting users from predatory trading strategies that rely on observing order flow.
The decryption process typically occurs only after the block proposal, ensuring the transaction remains opaque during the pre-execution phase. This technique is a vital component of modern market microstructure in decentralized finance, aimed at fostering fairer execution environments.