# Mar 5, 2026 | Parameter Committee Triweekly - meeting notes

**URL:** <https://forum.cardano.org/t/mar-5-2026-parameter-committee-triweekly-meeting-notes/154363>\
**Category:** Parameters Committee Updates\
**Created:** [1 May 2026 11:18 UTC](https://forum.cardano.org/t/mar-5-2026-parameter-committee-triweekly-meeting-notes/154363 "2026-05-01T11:18:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![alxaex](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.cardano.org/alxaex/32/62607_2.png) [@alxaex](https://forum.cardano.org/u/alxaex)\
**Post date:** [1 May 2026 11:18 UTC](https://forum.cardano.org/t/mar-5-2026-parameter-committee-triweekly-meeting-notes/154363/1 "2026-05-01T11:18:46Z")

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### 1. Van Rossem Cost Model: Recommendation & Vote

The committee officially voted to recommend the new Plutus cost models for the upcoming **Van Rossem** hard fork.

- **Primitive Backporting:** The update includes 14 new primitives (e.g., `serializedData`, `xModInteger`, `dropList`) which will be backported to Plutus V1 and V2 to ensure ecosystem-wide parity.
- **Benchmarking Methodology:** The Plutus team uses a “fan shape” regression technique, discarding lower data points to cover **90% of the data** with a linear model. This ensures costs are calculated conservatively to prevent Denial of Service (DoS) attacks.
- **The Vote:** The motion to recommend these changes passed with **9 out of 11** eligible voters in favor.
- **Refinement:** Per the advice of community observers, the committee emphasized that final cost model formatting must be flawless to avoid the governance “undo/redo” cycles seen in previous testnet deployments.

### 2. Proposal to Lower DRep Deposits

Mike Hornan introduced a proposal to significantly lower the barrier to entry for decentralized representatives.

- **The Proposal:** Lower the DRep deposit from **500 ADA to 5 ADA**.
- **Rationale:** Accessibility is the primary driver. Proponents argue that high deposits have not successfully incentivized de-registration as intended and may hinder community participation.
- **Technical Impact:** Performance tests on **SanchoNet** with 10,000 DReps showed minimal system impact, suggesting that the 500 ADA “spam protection” may not be technically necessary.
- **Next Steps:** The proposal will be socialized on the public forums. A potential **CIP** may be required to allow existing DReps to recoup the 495 ADA difference without losing their current delegations.

### 3. Transaction Fee (TXV) Reduction Debate

A new proposal from the business team suggested lowering transaction fees to support high-volume corporate use cases, such as the **Digital Product Passport (DPP)**.

- **Economic Viability:** The committee is divided. While a lower fee could attract massive volume (e.g., 100k+ transactions), members established a “red line” ensuring that fees must still cover the cost of production and SPO sustainability.
- **L2/Sidechain Alternative:** Some members suggested these high-volume use cases might be better suited for Layer 2 solutions rather than a Mainnet fee reduction.
- **Action Item:** The committee will consult with economic researchers to calculate the “break-even” point for the network before proceeding.

### 4. Memory Units (MemUnits) Status

- **Part One Results:** The committee is currently monitoring the impact of the recent 17% increase. Evidence of Mainnet transactions utilizing the new capacity is being gathered to justify further increases.
- **Part Two Timeline:** The second phase of the MemUnit increase will be discussed in late March or April, as it is no longer a strict blocker for the immediate hard fork.