Biomedical Linked Annotation Hackathon (BLAH) 1 was held in The University of Tokyo Kashiwa Campus Station Satellite in Kashiwa, Chiba, Japan. On the last day of the Hackathon (Feb. 27), public symposium of the BLAH 1 was held.In this talk, Jin-Dong Kim (DBCLS, Japan) makes a presentation entitled "Introduction of BLAH2015". (5:35)