Parent Chain

Chain

The parent chain, within a layered blockchain architecture, represents the foundational, typically more secure, and established blockchain upon which other chains or layers are built. Its role is critical for settlement and data availability, functioning as the ultimate source of truth for transactions originating on child chains, and often employing a Proof-of-Work consensus mechanism to enhance security. This foundational layer dictates the security parameters and finality guarantees extended to dependent layers, influencing the overall system resilience against attacks and data manipulation.