Aptos Labs has proposed an encrypted mempool for its layer-1 blockchain that would conceal pending trade instructions until transaction ordering is complete, with its research team reporting 27 milliseconds of added proposal-to-execution latency in tests.

The company outlined the proposal in an Oct. 30, 2025 blog post, describing an optional method for submitting encrypted transactions without exposing their contents while validators decide their order. In a May 12, 2026 report, crypto.news covered the same encrypted mempool proposal as dependent on governance approval, with transaction details revealed before execution and the normal public record retained after confirmation.

Protecting orders before execution

According to Aptos Labs' explanation, pending transactions on most blockchains expose information that validators and other participants can use to copy trades, change their order, or trade ahead of users. For traders, that exposure is the practical root of the problem: an order whose size and direction can be read before it is ordered gives other participants the opportunity to act on it first, which is how frontrunning shows up as worse execution prices for the original user. In the May report, the company described protocol-level protection as a way to reduce orderflow leakage, censorship and frontrunning for large onchain transactions, rather than relying on a separate service to keep orders confidential.

The original announcement made its first-of-its-kind claim conditional on a governance vote:

"If approved by governance, Aptos will be the first L1 to offer users the option to send transactions via a native Encrypted Mempool."

The governance process is therefore the milestone to watch: until it approves the change, the encrypted mempool remains a proposal rather than a feature users can access. Under the design described in the May coverage, users would opt into protected submission with a single click, while validators would reveal the encrypted instructions after ordering so that transactions could execute. For users of exchanges such as Decibel, the original blog presents confidentiality before execution as the intended protection; Aptos Labs says completed transaction information would still be recorded onchain. The design targets the ordering window, in other words, while leaving the post-confirmation public record intact for anyone auditing network activity.

Batched decryption to limit the processing burden

In the blog's technical account, validators share control of the decryption key during each epoch, a period in which the validator set stays fixed, and a stake-based threshold must cooperate to reveal encrypted payloads. Aptos Labs says processing a batch together reduces the work required compared with decrypting each transaction separately, allowing much of the computation to happen while validators vote. The company puts the remaining online phase at less than 20 milliseconds per batch, a measurement of one stage of the process rather than total transaction time.

The research behind the proposal is detailed in a subsequent paper in which Rex Fernando, Guru-Vamsi Policharla, Andrei Tonkikh and Zhuolun Xiang describe TrX, their integration of encrypted mempools with a high-performance Byzantine fault-tolerant consensus protocol. Published as a preprint in November 2025, the research identifies visible transaction contents before ordering as the mechanism behind frontrunning, sandwich trades and other forms of maximal extractable value, or MEV — value captured by whoever can see and act on pending transaction details first.

According to the authors, their system preserves confidentiality during ordering while adding 27 milliseconds to proposal-to-execution latency, equivalent to 14% over the baseline used in their comparison. The researchers describe the result as comparable with leading consensus designs while providing protection against MEV, with the claim resting on the system and comparisons presented in the paper. For a proposal aimed at trading activity, that latency figure carries much of the argument: the design's case depends on adding confidentiality without giving up the execution speed the paper benchmarks against leading consensus protocols.

Decibel sits within Aptos' funded trading program

The encrypted mempool proposal forms part of a broader push by Aptos into trading infrastructure. In May 8 coverage of its ecosystem funding commitment, Aptos Foundation and Aptos Labs committed more than $50 million to first-party products, research, protocol infrastructure and a strategic fund for trading and AI partners. According to that report, Decibel went live on Aptos mainnet in February as an onchain order book and perpetual futures exchange, and Aptos said cumulative trading volume had exceeded $1 billion by May.

In a May 7 announcement, the network said Decibel records orders, matches and cancellations onchain, and described confidentiality and protection against exposed trading intent as requirements for professional trading. Those stated requirements are what the encrypted mempool proposal is built to address, which is what links the governance decision to the exchange's users. The network also reported that its stablecoin market capitalization had reached a peak of $1.93 billion, nearly ten times its level in late 2024, while real-world assets had reached $1.2 billion.

U.S. fund activity adds institutional context

In an April 7 announcement, DigiShares disclosed its Aptos tokenization integration, allowing clients to issue and manage digital securities and other tokenized assets on the network. DigiShares said its platform handles investor onboarding, compliance, shareholder records and dividend distributions, supporting asset management from issuance through potential secondary trading. The announcement identified BlackRock, Franklin Templeton and Ondo Finance among firms already using Aptos for tokenization, and described fund managers and real estate owners as customers of DigiShares' software.

More recently, Aug. 13 reporting covered Franklin's BENJI custody arrangement, which followed an SEC staff no-action letter permitting specified custody arrangements for Franklin's U.S.-registered funds investing in its OnChain U.S. Government Money Fund. In the Aug. 12 letter, SEC investment management staff said they would not recommend enforcement action under Section 17(f) and Rule 17f-2 if the funds met the stated conditions.

According to the letter, Franklin's transfer agent would retain official ownership records and wallet keys with Stellar identified as the primary blockchain and other networks available for certain eligible accounts. Among the letter's conditions, each investing fund's board must review the custody arrangements at least annually, and independent accountants must verify investments at least three times per fiscal year, including two checks without prior notice. Against that backdrop of institutional activity, the encrypted mempool proposal extends the network's push into professional-grade trading infrastructure, pending the governance vote that would decide whether it moves from proposal to live feature.