Abstract: An ownership management system records an article ID, which is unique information for identifying an article, and an owner ID, which is information indicating an owner of the article, on a blockchain in association with each other, and generates a two-dimensional code from a hash value acquired from the blockchain at the time of recording, the article ID, and the owner ID. The ownership management system accepts the two-dimensional code, extracts the hash value, the article ID, and the owner ID from the accepted two-dimensional code acquires the article ID and the owner ID recorded on the blockchain by using the extracted hash value, determines a matching relationship between the article ID and the owner ID extracted from the two-dimensional code, and outputs the extracted article ID and the owner ID when it is determined that the matching is made.

Abstract: A site reception unit receives designation of a web site where a search window for searching for data existing in a prescribed data pool is to be displayed. A page reception unit receives designation of one or more web pages for displaying the search window among one or more web pages constituting the web site the destination of which has been received. A search window position reception unit receives destination of a position for displaying the search window for each web page the destination of which has been received. A construction unit constructs the web site so as to display the search window at the designated position for a user who has accessed the web site.

Abstract: A site reception unit receives designation of a web site where a search window for searching for data existing in a prescribed data pool is to be displayed. A page reception unit receives designation of one or more web pages for displaying the search window among one or more web pages constituting the web sit the destination of which has been received. A search window position reception unit receives destination of a position for displaying the search window for each web page the destination of which has been received. A construction unit constructs the web site so as to display the search window at the designated position for a user who has accessed the web site.

Abstract: A production plan planning method having: receiving, by a computer, an order including production time information on a product in a received order condition as received order information; searching, by the computer, the production schedule information storage part for production schedule information on the product stored in the received order information; allocating, by the computer, production schedule information on each process for the at least one first component to the retrieved production schedule information; and controlling, by the computer, the allocated production schedule information on the each process to take over the production time information, the third step comprising allocating production schedule information satisfying the production time information included in the received order condition of the received order information to the each process, the fourth step comprising controlling the respective allocated processes to sequentially take over production time information on a first process