Privacy Preserving Blockchain with Optimal Deep Learning Model for Smart Cities[J] CMC-COMPUTERS MATERIALS & CONTINUA 2022(73) Kumar, K. Pradeep Mohan Mahilraj, Jenifer Swathi, D. Rajavarman, R. Zeebaree, Subhi R. M. Zebari, Rizgar R. Rashid, Zryan Najat Alkhayyat, Ahmed