"Blockchain", which is the technology that underlies Bitcoin, is a public distributed electronic ledger that records all verified bitcoin transactions ever occurred. Under this system, transactions are treated as part of blocks and each block links to a previous block, thus forming a chain, validating all transactions in the loop and securing the network. This public ledger can be reviewed real-time by anyone located anywhere in the world. Digital signatures are used to authenticate each transaction which allows users to have full control over sending bitcoins from their addresses.The digital ledger technology, or DLT, is gaining popularity among financial institutions as they embrace more FinTech systems and the high transparency feature of the system is also attracting governments and social groups to explore its use as an anti-corruption tool and for application in regulation technology, or RegTech.