Master-slave block chain-oriented multi-level index construction method

The invention relates to a master-slave block chain system-oriented indexing method for improving query efficiency, and belongs to the field of block chain indexing. The invention provides a multilevel index construction method oriented to a master-slave block chain. The method comprises the following steps: firstly, introducing a weight matrix, fragmenting the whole master-slave block chain based on a main chain structure, and carrying out weight assignment on each fragment; secondly, for the main block chain in each fragment, providing a main chain index construction method based on jump consistency hash, inputting a node key value and an index slot number, and outputting a main chain index; and finally, introducing a Bloom filter, improving a column-based selection function, and constructing a two-level composite index for the subordinate block chain corresponding to each main block. 本发明是一种面向主从区块链系统的提高查询效率的索引方法，属于区块链索引领域。本发明提出一种面向主从区块链的多级索引构建方法。首先，该方法引入权重矩阵，基于主链结构将整个主从区块链进行分片，并对各个分片进行权重赋值；其次，针对每个分片内的主区块链，提