Revolutionizing Air Pollution Spikes Analysis With a Blockchain-Driven Machine Learning Framework. - Eric Nizeyimana; Junseok Hwang; Jules Zirikana; Bonaventure Karikumutima; Irene Niyonambaza Mihigo; Pacifique Nizeyimana; Damien Hanyurwimfura; Jimmy Nsenga (Trans. Emerg. Telecommun. Technol., 2025)