A significant portion of research on distributed ledgers has focused on circumventing the limitations of leader-based blockchains mainly in terms of scalability, decentralization and power consumption. Leaderless architectures based on directed acyclic graphs (DAGs) avoid many of these limitations altogether, but their increased flexibility and performance comes at the cost of increased design complexity, so their potential has remained largely unexplored. Management of write access to these ledgers presents a major challenge because ledger updates may be made in parallel, hence transactions cannot simply be serialised and prioritised according to token fees paid to validators. In this work, we propose an access control scheme for leaderless DAG-based ledgers which is based on consuming credits rather than paying fees in the base token. We outline a general model for this new approach and provide some simulation results showing promising performance boosts.

翻译：分布式账本领域的大量研究聚焦于如何突破基于领导者的区块链在可扩展性、去中心化和功耗方面的局限性。基于有向无环图（DAG）的无领导者架构完全规避了其中许多限制，但其灵活性与性能的提升是以设计复杂度的增加为代价的，因此其潜力至今仍未得到充分探索。这类账本的写访问权限管理构成重大挑战，因为账本更新可能以并行方式进行，交易无法简单序列化并根据向验证者支付的代币费用来排序。本文提出一种针对无领导者DAG账本的访问控制方案，其基础是消耗信用值而非支付基础代币费用。我们概述了这一新方法的通用模型，并提供仿真结果，显示其性能具有显著提升潜力。