Blockchain technology is seeing increasingly wide use internationally, but security issues are becoming a major problem.
Blockchain is a public electronic ledger that can be openly shared among users and that creates an unchangeable record of their transactions. Each transaction, or “block”, is time-stamped and linked to the previous one. Each block is then linked to a specific participant. Blockchain can only be updated by consensus between users in the system, and when new data is entered, it can never be erased, edited, adjusted, or changed.