Aptos has proposed a native Encrypted Mempool feature that would let users submit transactions privately while preserving the network’s speed and transparency.
If approved through governance, Aptos says this would make it the first Layer 1 blockchain to offer built-in encrypted transaction submission at the protocol level.
Aptos Targets MEV Exploitation
The Encrypted Mempool proposal is intended to protect users from frontrunning, censorship, and order-flow manipulation. Under the plan, users could send encrypted transactions with a single click, and all transaction details would still become visible on-chain after the block is confirmed.
Aptos noted the proposal amid rapid growth in decentralized exchange activity. The company pointed out that DEX spot trading volumes grew substantially in recent years, and that many blockchains still reveal pending transactions before finalization—allowing validators and other participants to observe and potentially exploit trading activity prior to execution.
This exposure has contributed to the growth of the MEV (maximal extractable value) market, where validators and opportunistic traders profit by reordering, censoring, or front-running pending transactions. Aptos’ Encrypted Mempool aims to remove that opportunity by keeping transaction intent confidential until execution, while preserving the network’s existing security assumptions.
Aptos Labs describes the design as relying on threshold cryptography and a distributed key generation process that runs before each validator epoch. Transactions would be submitted as encrypted payloads, and validators would collectively decrypt them only after a block has been ordered. Traditional encrypted transaction systems often struggle with scalability because validators must individually communicate and process partial decryptions for every encrypted transaction, creating significant communication, computation, and latency costs across the network.
To address those challenges, the Aptos research team developed a batched threshold decryption scheme. Instead of producing partial decryptions per transaction, validators generate a single partial decryption for an entire batch of encrypted transactions. According to Aptos, this approach substantially reduces communication and computation overhead and allows much of the processing to occur ahead of time.
The proposal also claims to mitigate replay attacks, eliminate the need for users to compete for encryption slots, and reduce transaction resubmissions. Aptos says the Encrypted Mempool would be integrated directly into the network’s consensus protocol and would add only minimal additional latency.
APT Price Action
Aptos’ native token, APT, has trended upward over the past 30 days, rising from about $0.82 in mid-April to nearly $1.10 by mid-May. During that period, APT experienced several sharp gains and briefly crossed $1.20 before pulling back.
Over the past 24 hours, the token slipped by approximately 2%, trading near $1.10.