0xMiden/protocol

Optimize input note num inputs/assets memory layout

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#2,256 opened on Jan 12, 2026

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Description

After #2109 is closed (to avoid merge conflicts), we should be able to make a tiny PR that moves these two constants closer together:

https://github.com/0xMiden/miden-base/blob/eee0e8450b825857e7d56ffebfaa269378a61aca/crates/miden-protocol/src/transaction/kernel/memory.rs#L388-L389

It should be possible to do:

pub const INPUT_NOTE_NUM_INPUTS_OFFSET: MemoryOffset = 36;
pub const INPUT_NOTE_NUM_ASSETS_OFFSET: MemoryOffset = 37;
pub const INPUT_NOTE_ASSETS_OFFSET: MemoryOffset = 40

This applies to memory.masm in the same way.

Context: https://github.com/0xMiden/miden-base/pull/2249#discussion_r2679280006

Contributor guide

Research direction
Check if PR #2109 is merged, then modify memory.rs and memory.masm constants as described in the issue.
Tech stack
rust
Domain
backendblockchain
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitRust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75