neo-project/neo

Remove some `IsHardFork` logic

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#4455 opened on Jan 23, 2026

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Help Wanted

Description

IsHardfork logic ensure that we have safe updates, but I'm sure there are some conditionals that can be removed safely and it could improve the code readability and performance.

The process of remove one of this condition is sync mainnet and testnet with and without the condition (each one) can someone make this in order to detect which conditions can be removed?

Thanks!

Contributor guide

Tech stack
csharp
Domain
backendperformanceblockchain
Issue type
refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
needs investigation
Prerequisites
Basic understanding of C#Familiarity with blockchain conceptsAbility to run Neo node locally
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
45
Research direction
Run Neo mainnet and testnet nodes locally, with and without specific IsHardFork conditionals, and compare behavior to identify which conditionals can be safely removed. Focus on the IsHardFork logic in the codebase (likely in Consensus or protocol related files). Document the results for maintainer review.