Blockchain provides users a more secure record, called blocks, of their transactions that are linked using cryptography. Each block contains a cryptographic hash of previous block, a timestamp, and transaction data that helps provide users with greater transparency, improved traceability, increased efficiency and speed, and reduced costs.

Check out this lightboard video with Sai Vennam from IBM Cloud as he takes a deep dive into blockchain technology and covers everything from smart contracts to permissioned and permissionless blockchains.