标题： 行为证明：可信去中心化金融的行为驱动共识 显示英文标题

标题： Proof-of-Behavior: Behavior-Driven Consensus for Trustworthy Decentralized Finance

摘要： 当前的区块链协议（例如工作量证明和权益证明）保护账本，但无法衡量验证者的可信度，这允许了微妙的不当行为，这在去中心化金融（DeFi）环境中尤其有害。 我们引入了行为证明（PoB），一种共识模型，（i）为每个行动赋予分层效用分数——涵盖动机和结果，（ii）使用最近的分数调整验证者权重，以及（iii）应用按比例削减的去中心化验证。 奖励设计是激励相容的，产生一个纳什均衡，在该均衡中诚实行为最大化长期收益。 模拟的DeFi实验（贷款欺诈检测、声誉加权验证）表明，PoB将欺诈接受率减少了超过90%，在两轮内降级恶意验证者，并且相对于标准PoS提高了提议者公平性，所有这些仅带来最多5%的吞吐量开销。 通过将共识影响与可验证的可信行为联系起来，PoB为金融应用中的安全和公平区块链治理提供了可扩展且符合监管要求的基础。 显示英文摘要

摘要： Current blockchain protocols (e.g., Proof-of-Work and Proof-of-Stake) secure the ledger yet cannot measure validator trustworthiness, allowing subtle misconduct that is especially damaging in decentralized-finance (DeFi) settings. We introduce Proof-of-Behavior (PoB), a consensus model that (i) gives each action a layered utility score -- covering motivation and outcome, (ii) adapts validator weights using recent scores, and (iii) applies decentralized verification with proportional slashing. The reward design is incentive-compatible, yielding a Nash equilibrium in which honest behavior maximizes long-run pay-offs. Simulated DeFi experiments (loan-fraud detection, reputation-weighted validation) show that PoB cuts fraud acceptance by more than 90%, demotes malicious validators within two rounds, and improves proposer fairness versus standard PoS, all with no more than a 5% throughput overhead. By linking consensus influence to verifiably trustworthy conduct, PoB offers a scalable, regulation-friendly foundation for secure and fair blockchain governance in financial applications.