Abstract: A data storage method and system, applied in a network system of distributed ledger technology. The method comprises: storing, by a first node, data of information units of the network system; determining, by a second node, a designated origin signal including an identifier of at least one origin information unit; obtaining, by the second node, data of the information units of the network system from the first node; determining, by the second node, a designated destination signal including an identifier of a destination information unit; determining, by the second node, a shortest path data from the origin information unit to the destination information unit according to the designated origin signal, the data of the information units of the network system, and the designated destination signal; and storing, by the second node, data of all information units included in the shortest path data.

Abstract: An integrated method for uploading data on a blockchain comprising: receiving an editable text data or an editable form data by the data source computer device; determining whether a file update time of the editable text data or the editable form data is later than a last change time stored by the service server and corresponding to the data by the data source computer device; sending the data to the service server when the data source computer device determined that the file update time is later than the last change time by the data source computer device; executing a corresponding service that is able to access data of a blockchain and upload the data to the blockchain according to the data from the data source computer device by the service server. Therefore, the data can be efficiently and quickly uploaded to the blockchain.