Consistency guarantees define the rules for how data updates are seen across a distributed system. They ensure that all participants view the same data at any given moment or within a defined timeframe. Different blockchain architectures offer varying levels of these guarantees, impacting data reliability. Strong consistency ensures that every read operation returns the most recent written value.
Context
In blockchain technology, consistency guarantees are fundamental to transaction finality and network integrity. Proof-of-Work systems achieve eventual consistency, while Proof-of-Stake protocols often aim for stronger, faster finality. The ongoing scalability challenges in decentralized networks frequently involve trade-offs between consistency, availability, and partition tolerance.
This research introduces a novel economic security framework, the EAAC property, to rigorously quantify attack costs in permissionless blockchains, ensuring protocol resilience.
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