Definition ∞ A Plasma Blockchain is a layer-two scaling solution designed to increase the transaction throughput of a main blockchain, such as Ethereum, by processing transactions off-chain. It operates as a hierarchy of smaller, nested blockchains that periodically report their state back to the main chain. This structure reduces the load on the main chain, enabling faster and cheaper transactions. Plasma chains improve scalability while inheriting the security of the primary network.
Context ∞ Plasma blockchains were an early and significant approach to addressing the scalability limitations of foundational blockchains. While other layer-two solutions like rollups have gained prominence, Plasma’s principles continue to influence current scaling research. News reports on blockchain scalability often reference Plasma as a historical development that paved the way for more advanced off-chain processing architectures.
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