Introduction to Blockchain บล็อกเชน ถ้าแปลแบบตรงๆ บล็อก (Block) คือ การเก็บข้อมูลแบบนึงที่เก็บเป็นส่วนๆ และนำมาร้อยต่อกันเรื่อยๆ เหมือนโซ่คล้องกัน (Chain) โดยมีวิธีเข้ารหัสทางคอมพิวเตอร์เพื่อความปลอดภัย ที่ทำให้รู้ว่าข้อมูลถูกเก็บ ณ เวลาใด มีการแก้ไขหรือเปล่า โดยข้อมูลทั้งหมดจะส่งและกระจายเก็บไว้ในคอมพิวเตอร์ทุกเครื่องที่อยู่ในเครือข่าย ดังนั้น ข้อมูลที่ถูกเขียนลงไปแล้ว จึงมีความน่าเชือถือเพราะทุกคนในเครือข่ายจะเห็นการเปลี่ยนแปลงพร้อมๆ กัน ถ้าใครอยากจะแก้ไขก็มีทางเดียวคือต้องไปแก้ในเครื่องของทุกคนที่อยู่ในเครือข่ายนั้นๆ
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