Rate-Limiting and MEV Resistance

Nomisma is a project in development. Not all solutions presented in the following sections and subsections are implemented at this stage. The current and all subsequent sub-pages are subject to change.

Rate-Limiting for Economic Sustainability and Security

To preserve network integrity and ensure consistent performance, Nomisma introduces a unique rate-limiting framework, targeting both per-user and per-dApp activity. This mechanism is enforced at the Nomisma L1 validator level, where real-time monitoring tools and protocol-specific thresholds are used to filter and validate transaction flows across the subchain network.

Unlike traditional blockchains that rely on gas auctions to price out spam, Nomisma uses rate-limiting as a native security layer, governed by the DAO as part of the nBFT consensus. It caps transaction volume per smart contract or user ID within specific timeframes based on transaction count.

For high-frequency applications like DEXs, AI agents, or data-intensive DePIN use cases, these rate limits are dynamically adjustable through governance proposals, allowing dApps with real utility and demand to scale responsibly without introducing systemic limitations.

This architecture ensures that Nomisma remains gasless without becoming vulnerable to spam abuse. It eliminates unnecessary computation, mitigates fraud vectors such as transaction flooding, and upholds fair access to execution throughput.

Key rate-limiting capabilities include:

• Throughput caps per wallet, based on malicious behavior

• Subchain-level execution quotas, configurable by dApp developers to balance load

• Fair usage enforcement, allowing dApps to allocate bandwidth proportionally among users

These controls ensure that gasless execution remains sustainable, preventing malicious actors from overwhelming validator nodes or database capacity.

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MEV Resistance

Nomisma architecture minimizes MEV at the protocol level by fundamentally redesigning how transactions are ordered, executed, and incentivized. This creates a trust-preserving environment where end users, developers, and validators operate under fair, transparent rules.

In blockchains like Ethereum, MEV often arises due to fee-based transaction prioritization — where miners or validators can reorder transactions to capture higher tips or exploit arbitrage opportunities (sandwich, front-running, back-running attacks).

Nomisma removes this incentive entirely by:

• Eliminating base network gas fees — users don’t bid for faster transaction execution

• Removing per-block priority ordering based on tip size

• Making all transaction ordering deterministic and governed by the NomismaOS scheduler and nBFT consensus, not validator discretion

This architecture means validators cannot be bribed via higher gas payments to manipulate transaction ordering, removing one of the core MEV vectors.