TLDR
- Aptos plans a native Encrypted Mempool at the protocol layer.
- The feature aims to reduce frontrunning and censorship risks.
- Transaction details would stay hidden during block ordering.
- Transactions would be decrypted before execution on Aptos.
- Confirmed transactions would still be recorded on-chain.
Aptos plans to introduce a native Encrypted Mempool to protect transaction intent before execution. The feature, pending governance approval, would hide transaction details during block ordering and decrypt them before execution. Aptos Labs says the design can reduce frontrunning, censorship, and order-flow leakage. Confirmed transactions would still appear on-chain after settlement, under the normal ledger record as generally used today.
Aptos Targets Transaction Privacy at Protocol Level
Aptos said the planned Encrypted Mempool would protect user intent before a transaction reaches execution. The system is designed to keep key transaction details hidden during block ordering. This means validators would not see full transaction content while ordering blocks.
The network said the feature remains subject to governance approval. It is not live yet. Aptos said the change would sit at the protocol layer, rather than depend on an external privacy tool. Aptos Labs said its batched threshold encryption design supports this model. The design would encrypt transactions before ordering and decrypt them before execution.
Aptos to Launch Native Encrypted Mempool to Prevent Frontrunning and Censorship
Aptos said it will launch a native Encrypted Mempool to protect user transaction intent at the protocol layer, reducing risks such as frontrunning, censorship, and order-flow leakage.
The mechanism… pic.twitter.com/4LxtT3MwDO
— Wu Blockchain (@WuBlockchain) May 12, 2026
It aims to keep the same basic trust model as the network. The company said confirmed transactions would still be recorded on-chain. Public settlement records would remain available after execution. The privacy layer would focus on the period before execution.
Feature Aims to Reduce Frontrunning and Censorship
The Encrypted Mempool is aimed at risks linked to visible transaction flow. These risks include frontrunning, censorship, and order-flow leakage. Such risks can appear when pending transactions are visible before block inclusion. Aptos said the mechanism protects transaction intent before trades or transfers are completed.
This may matter for users moving large values on-chain. It may also matter for trading systems that rely on fair ordering. Aptos Labs described the system as a way to secure intent at the protocol layer. It said the design can work with limited added delay. It also said the method avoids new trust demands beyond the network itself.
The project stated that, if approved, Aptos would become the first Layer 1 chain with a native encrypted mempool. The claim is tied to full transaction intent confidentiality at the protocol level. The launch still depends on governance approval.
Market Infrastructure Focus Expands on Aptos
The move fits Aptos’ broader focus on market infrastructure. Encrypted mempools address MEV risk by reducing visibility before execution. This approach differs from systems that remove public mempools from trading flows.
Some market designs seek to avoid mempools entirely. Permaswap, for example, uses a peer-to-peer orderbook on HyMatrix. Its fills are anchored to Arweave, based on the details shared in the announcement context. Aptos’ planned design takes another route. It keeps the transaction path within the Layer 1 network.
It also seeks to protect transaction data before ordering and execution are completed. The proposal reflects growing demand for transaction protection in on-chain markets. Fast settlement alone does not stop intent leakage. Aptos said its native Encrypted Mempool is built to reduce that risk while preserving public final records.
