a16z and the DeFi Education Fund ask Peirce to exempt DEXs that clear four tests

The exemption is worth whatever exchange registration would cost a smart contract. cryptobriefing.com describes that cost in kind: compliance infrastructure, surveillance systems and operational standards built for organizations with centralized management and identifiable counterparties ^[13]. Many of those requirements, the publisher writes, are either technically impossible for a contract deployed on a public blockchain to satisfy or mismatched to how the technology works ^[14].

Three of the four protocol tests can be checked against a deployment. The fourth asks a protocol to demonstrate credible neutrality, which the two organizations define as proving that no party involved in the trading process enjoys discretionary privileges or outsized control ^[6]. That leaves one test in four resting on a judgement about privilege instead of a property of the code ^[16], and it is the one the drafting will be fought over.

This is the second safe harbor these two have asked for ^[17]. On August 13, 2025 they submitted a proposal for a broker-dealer safe harbor aimed at the intermediary layer, the apps and interfaces that connect users to on-chain liquidity ^[9]. SEC staff followed in April 2026 with guidance endorsing the view that non-custodial user interfaces sit in a different regulatory category from custodial platforms, though the statement did not create binding exemptions ^[10]. The September 14 letter moves down to the protocol and attaches a condition to the interfaces: a DEX App would have to take its market data from objective, publicly available sources instead of proprietary feeds ^[7].

I would expect the staff's first question to be how many deployed venues clear the fourth test. A definition drafted by the industry's own counsel usually describes systems that already run. Two other outcomes are available. Peirce, who leads the agency's Crypto Task Force and received the submission ^[12], could turn the four criteria into a proposed rule or an exemptive order, and the letter would then be a first draft of the boundary. Or the Commission keeps working interface by interface, the way the April 2026 staff statement did ^[10], and the criteria stay advocacy with no legal effect. The claim that this is a template fails if the staff never reaches the protocol layer at all.