Account checking method and device based on block chain

The invention provides an account checking method and device based on a block chain, and the method comprises the steps: obtaining a plurality of pieces of first to-be-checked data transmitted by a plurality of clients participating in account checking through a block link interface; wherein the first to-be-reconciliated data comprises overall to-be-reconciliated data; judging whether the plurality of first to-be-reconciliated data are the same or not; if yes, determining that the first to-be-reconciliated data is correct data; and if not, determining that the first to-be-reconciliated data isfirst problem reconciliation data. Unified account checking is carried out in the block chain, the account checking process can be completed only through one-time account checking and one-time data transmission, and the problems of low account checking efficiency and poor reliability in the prior art are solved. 本申请提供了一种基于区块链的对账方法及装置，所述方法包括：通过区块链接口，获取参与对账的多个用户端分别发送的多个第一待对账数据；其中，所述第一待对账数据包括整体待对账数据；判断所述多个第一待对账数据是否相同；若相同，确定