Expansion chain security refers to the mechanisms and protocols that protect auxiliary blockchains or sidechains connected to a main chain. These systems ensure that the security properties of the primary chain extend to its connected expansion chains, maintaining overall network integrity. This often involves cryptographic proofs or validator participation from the main network.
Context
This concept is central to scalability discussions within blockchain ecosystems, particularly those employing sharding or layer-2 solutions. News reports frequently assess the robustness of these security models, especially when new expansion chains are launched or updated. The effectiveness of expansion chain security directly influences user confidence and the adoption of these scaling technologies.
Aegis introduces a provably safe and live protocol for securing expansion chains with primary-chain stake, resolving security challenges posed by dynamic validator withdrawals.
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