#SWITCH! 2018 BLOCKCHAIN TECHNOLOGY REVOLUTION

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Juan José Calderón Amador * ✘ ★

Juan José Calderón Amador * ✘ ★

ⓔlige la cadena de la vida abc1chde2ghij3…✘ⓔ-ⓝⓐⓤⓣⓐ, ⓔ-ⓜⓔⓝⓣⓔ Sevilla★#blockchain★elearning ★Ⓐrⓣ★ education★P2P★economy★