Definition ∞ Layer 2 Primitives are fundamental building blocks or core functionalities developed on top of a main blockchain, known as Layer 1, to enhance its capabilities. These primitives typically focus on improving scalability, transaction speed, or privacy without compromising the security of the underlying chain. Examples include basic components for rollups, state channels, or sidechains. They serve as foundational elements for constructing more complex decentralized applications and protocols.
Context ∞ The development of layer 2 primitives is a central theme in efforts to scale blockchain networks and support wider adoption. Discussions often center on the security assumptions and efficiency gains offered by different primitive types. Interoperability between various layer 2 solutions and the main chain presents ongoing challenges. News frequently covers new innovations and deployments of these foundational components, which are critical for the future of decentralized finance.