Data tracing method and device, equipment and storage medium

The invention discloses a data tracing method and device, equipment and a storage medium. The method comprises the steps of obtaining a traceability query request, and accessing a block chain according to the traceability query request to obtain target encryption information corresponding to the traceability query request and node information of a target Merkel tree; querying the target storage area according to the node information of the target Merkel tree to obtain original data corresponding to the traceability query request; if the first encryption information of the original data corresponding to the traceability query request is consistent with the target encryption information corresponding to the traceability query request, determining a target time period according to the traceability query request and a preset period; and traversing the target Merkel tree, and determining the original data corresponding to the node information of the target Merkel tree in the target time period as the target tracin