论文标题
功率区块链的最佳自举
Optimal Bootstrapping of PoW Blockchains
论文作者
论文摘要
由于初期的参与和相应的低净哈希功率，工作证明（POW）区块链在早期阶段就容易受到对抗性多数采矿攻击的影响。引导程序通过防止大多数采矿攻击来确保在短暂阶段的安全性和livese，从而使POW链能够增加参与基础和相应的采矿作用力。 livesice尤其重要，因为失去失误将导致诚实的采矿奖励，减少诚实的参与，从而造成不希望的螺旋。实际上，现有的自举机制提供了特别弱的保证。 在本文中，我们提出了一种新的引导方法，这是一种主要结果：（a）Nakamoto最长链条协议的超级劳动对手下的最佳耐受性和低潜伏期，以及（b）（b）包括多种平行基于平行的基于基于chin的缩放体系的黑盒概括，包括OHIE和PRISM。我们通过全堆栈实施证明了倡导者在90％的对手多数下的鲁棒性。
Proof of Work (PoW) blockchains are susceptible to adversarial majority mining attacks in the early stages due to incipient participation and corresponding low net hash power. Bootstrapping ensures safety and liveness during the transient stage by protecting against a majority mining attack, allowing a PoW chain to grow the participation base and corresponding mining hash power. Liveness is especially important since a loss of liveness will lead to loss of honest mining rewards, decreasing honest participation, hence creating an undesired spiral; indeed existing bootstrapping mechanisms offer especially weak liveness guarantees. In this paper, we propose Advocate, a new bootstrapping methodology, which achieves two main results: (a) optimal liveness and low latency under a super-majority adversary for the Nakamoto longest chain protocol and (b) immediate black-box generalization to a variety of parallel-chain based scaling architectures, including OHIE and Prism. We demonstrate via a full-stack implementation the robustness of Advocate under a 90% adversarial majority.
