A paper accepted by ACM/SIGAPP SAC 2022 December 14 , 2021 June 1, 2023Taeho Wenyi Tang, Changhao Chenli, Chanyang Ju, Taeho Jung “Trac2Chain: Trackability and Traceability of Graph Data in Blockchain with Linkage Privacy” The 37th ACM/SIGAPP Symposium On Applied Computing, 2022