---
title: "execution/primitives"
description: "OP-specific transaction, receipt, and block primitive types shared across the execution layer."
source: https://basehub.org/crates/execution/primitives/
---
import { LinkCard } from '@astrojs/starlight/components';

## Overview

The `execution/primitives` sub-crate (`reth-optimism-primitives`) is part of the [execution crate group](/crates/execution/overview/).

It defines the OP transaction, receipt, and block primitive types reused across the EVM, RPC, payload, and storage crates.

## Source

<LinkCard title="View source on GitHub" href="https://github.com/base/base/tree/main/crates/execution/primitives" />