  This paper discusses congestion control and inconsistency problems in
DAG-based distributed ledgers and proposes an additional filter to mitigate
these issues. Unlike traditional blockchains, DAG-based DLTs use a directed
acyclic graph structure to organize transactions, allowing higher scalability
and efficiency. However, this also introduces challenges in controlling the
rate at which blocks are added to the network and preventing the influence of
spam attacks. To address these challenges, we propose a filter to limit the tip
pool size and to avoid referencing old blocks. Furthermore, we present
experimental results to demonstrate the effectiveness of this filter in
reducing the negative impacts of various attacks. Our approach offers a
lightweight and efficient solution for managing the flow of blocks in DAG-based
DLTs, which can enhance the consistency and reliability of these systems. Index
