Chain Structure

Definition ∞ Chain structure refers to the architectural organization of a blockchain or distributed ledger technology. This includes how data blocks are linked, validated, and maintained across a network of participants. It encompasses aspects such as block size, the chosen consensus mechanism, and the network’s topological arrangement. The chain structure fundamentally determines the system’s scalability, security attributes, and level of decentralization. Different structures are optimized for varied applications and performance requirements.
Context ∞ The selection of a chain structure is central to ongoing scalability debates within the blockchain community, particularly regarding layer-1 versus layer-2 solutions. Recent developments include advancements in sharding, sidechains, and various rollup technologies, all designed to enhance transaction throughput and reduce operational costs. The continuing competition among distinct blockchain architectures for widespread adoption constitutes a key news item.