Blockchain technology provides a means of building a secure, shared, and distributed database that can't be modified, often referred to as a distributed ledger, ensuring that data remains in its original, unaltered state. Data is replicated across many nodes. New transactions are digitally signed for security, with private keys used to create signatures and public keys used to verify the signatures. When participating nodes agree the data is valid, it is written to the database. The unique digital signatures ensure no individual blockchain node can modify the transaction message.
Transactions contain information about the sender, receiver, time of creation, data to be transferred, and reference transactions. Transactions are grouped together in blocks and a chain is created that maintains a history of ownership of digital assets...
