Definition ∞ A DAG-based blockchain is a distributed ledger technology that uses a Directed Acyclic Graph (DAG) structure instead of a linear chain of blocks. Transactions in a DAG are often added in parallel, referencing previous transactions directly, rather than being grouped into blocks. This architecture aims to achieve higher transaction throughput and scalability compared to traditional linear blockchains. It offers a different approach to consensus and data organization.
Context ∞ The current discourse on DAG-based blockchains often highlights their potential to address the scalability limitations faced by conventional blockchain designs. Key debates involve the security models and decentralization properties of various DAG implementations, particularly regarding resistance to certain types of attacks. A critical future development involves the practical deployment and widespread adoption of DAG networks for high-frequency transaction environments.
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