Proof of Assets in the Diem Blockchain
Proof of Assets in the Diem Blockchain
复制标题
Diem 区块链中的资产证明
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
K. Chalkias
中科院分区：
文献类型：
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作者：
Panagiotis Chatzigiannis;K. Chalkias
。分布式支付系统面临的一个巨大挑战是它们是否符合反洗钱、破产立法、打击恐怖主义的fi融资和制裁法律等法规。在比特币的MtGox丑闻之后，为了fi的财务偿付能力和税务报告目的，最需要的审计功能之一是证明区块链储备的所有权，这一过程被称为资产证明(POA)。这项工作将基于账户的区块链中的POA要求正式化，重点关注Diem区块链(前身为Libra)独特的分层账户结构。特别是，我们考虑到Diem基础设施的一些独特功能，通过探索时间戳边缘案例、冷钱包、锁定资产、消费能力委托和账户修剪等来考虑不同的POA模式。我们还提出了在轻客户端无法运行完整节点的情况下对POA的字节大小进行实用的优化，包括跳过验证器更新，同时仍保持66.67%的拜占庭容错(BFT)保证。
. A great challenge for distributed payment systems is their compliance with regulations, such as anti-money laundering, insolvency legislation, countering the financing of terrorism and sanctions laws. After Bitcoin’s MtGox scandal, one of the most needed auditing functionalities for financial solvency and tax reporting purposes is to prove ownership of blockchain reserves, a process known as Proof of Assets (PoA). This work formalizes the PoA requirements in account-based blockchains, focusing on the unique hierarchical account structure of the Diem blockchain, formerly known as Libra. In particular, we take into account some unique features of the Diem infrastructure to consider different PoA modes by exploring time-stamping edge cases, cold wallets, locked assets, spending-ability delegation and account pruning, among the others. We also propose practical optimizations to the byte-size of PoA in the presence of light clients who cannot run a full node, including skipping Validator updates, while still maintaining the 66.67% Byzantine fault tolerance (BFT) guarantee.